Decouple unit test code from business code (#17623)

136 files changed, 1057 insertions, 829 deletions

diff --git a/contrib/fixtures/fixture_generation.go b/contrib/fixtures/fixture_generation.go
index 5e7dd39a78..74996a1f35 100644
--- a/contrib/fixtures/fixture_generation.go
+++ b/contrib/fixtures/fixture_generation.go
@@ -10,7 +10,7 @@ import (
 	"path/filepath"
 
 	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 // To generate derivative fixtures, execute the following from Gitea's repository base dir:
@@ -31,13 +31,13 @@ var (
 func main() {
 	pathToGiteaRoot := "."
 	fixturesDir = filepath.Join(pathToGiteaRoot, "models", "fixtures")
-	if err := db.CreateTestEngine(db.FixturesOptions{
+	if err := unittest.CreateTestEngine(unittest.FixturesOptions{
 		Dir: fixturesDir,
 	}); err != nil {
 		fmt.Printf("CreateTestEngine: %+v", err)
 		os.Exit(1)
 	}
-	if err := db.PrepareTestDatabase(); err != nil {
+	if err := unittest.PrepareTestDatabase(); err != nil {
 		fmt.Printf("PrepareTestDatabase: %+v\n", err)
 		os.Exit(1)
 	}
diff --git a/contrib/pr/checkout.go b/contrib/pr/checkout.go
index 89d92c8526..1e2a9714e3 100644
--- a/contrib/pr/checkout.go
+++ b/contrib/pr/checkout.go
@@ -26,6 +26,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	gitea_git "code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/markup"
 	"code.gitea.io/gitea/modules/markup/external"
@@ -99,8 +100,8 @@ func runPR() {
 	})
 	db.HasEngine = true
 	//x.ShowSQL(true)
-	err = db.InitFixtures(
-		db.FixturesOptions{
+	err = unittest.InitFixtures(
+		unittest.FixturesOptions{
 			Dir: path.Join(curDir, "models/fixtures/"),
 		},
 	)
@@ -108,7 +109,7 @@ func runPR() {
 		fmt.Printf("Error initializing test database: %v\n", err)
 		os.Exit(1)
 	}
-	db.LoadFixtures()
+	unittest.LoadFixtures()
 	util.RemoveAll(setting.RepoRootPath)
 	util.RemoveAll(models.LocalCopyPath())
 	util.CopyDir(path.Join(curDir, "integrations/gitea-repositories-meta"), setting.RepoRootPath)
diff --git a/integrations/api_issue_label_test.go b/integrations/api_issue_label_test.go
index 4508069e17..f9c297a18e 100644
--- a/integrations/api_issue_label_test.go
+++ b/integrations/api_issue_label_test.go
@@ -10,6 +10,8 @@ import (
 	"strings"
 	"testing"
 
+	"code.gitea.io/gitea/models/unittest"
+
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
 	api "code.gitea.io/gitea/modules/structs"
@@ -18,7 +20,7 @@ import (
 )
 
 func TestAPIModifyLabels(t *testing.T) {
-	assert.NoError(t, db.LoadFixtures())
+	assert.NoError(t, unittest.LoadFixtures())
 
 	repo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 2}).(*models.Repository)
 	owner := db.AssertExistsAndLoadBean(t, &models.User{ID: repo.OwnerID}).(*models.User)
@@ -88,7 +90,7 @@ func TestAPIModifyLabels(t *testing.T) {
 }
 
 func TestAPIAddIssueLabels(t *testing.T) {
-	assert.NoError(t, db.LoadFixtures())
+	assert.NoError(t, unittest.LoadFixtures())
 
 	repo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 1}).(*models.Repository)
 	issue := db.AssertExistsAndLoadBean(t, &models.Issue{RepoID: repo.ID}).(*models.Issue)
@@ -111,7 +113,7 @@ func TestAPIAddIssueLabels(t *testing.T) {
 }
 
 func TestAPIReplaceIssueLabels(t *testing.T) {
-	assert.NoError(t, db.LoadFixtures())
+	assert.NoError(t, unittest.LoadFixtures())
 
 	repo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 1}).(*models.Repository)
 	issue := db.AssertExistsAndLoadBean(t, &models.Issue{RepoID: repo.ID}).(*models.Issue)
@@ -137,7 +139,7 @@ func TestAPIReplaceIssueLabels(t *testing.T) {
 }
 
 func TestAPIModifyOrgLabels(t *testing.T) {
-	assert.NoError(t, db.LoadFixtures())
+	assert.NoError(t, unittest.LoadFixtures())
 
 	repo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 3}).(*models.Repository)
 	owner := db.AssertExistsAndLoadBean(t, &models.User{ID: repo.OwnerID}).(*models.User)
diff --git a/integrations/integration_test.go b/integrations/integration_test.go
index 1429893270..69c4ca4ae5 100644
--- a/integrations/integration_test.go
+++ b/integrations/integration_test.go
@@ -25,7 +25,7 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/graceful"
@@ -84,6 +84,7 @@ func NewNilResponseHashSumRecorder() *NilResponseHashSumRecorder {
 func TestMain(m *testing.M) {
 	defer log.Close()
 
+	unittest.InitUnitTestBridge()
 	managerCtx, cancel := context.WithCancel(context.Background())
 	graceful.InitManager(managerCtx)
 	defer cancel()
@@ -112,8 +113,8 @@ func TestMain(m *testing.M) {
 		}
 	}
 
-	err := db.InitFixtures(
-		db.FixturesOptions{
+	err := unittest.InitFixtures(
+		unittest.FixturesOptions{
 			Dir: filepath.Join(filepath.Dir(setting.AppPath), "models/fixtures/"),
 		},
 	)
@@ -250,7 +251,7 @@ func prepareTestEnv(t testing.TB, skip ...int) func() {
 		ourSkip += skip[0]
 	}
 	deferFn := PrintCurrentTest(t, ourSkip)
-	assert.NoError(t, db.LoadFixtures())
+	assert.NoError(t, unittest.LoadFixtures())
 	assert.NoError(t, util.RemoveAll(setting.RepoRootPath))
 
 	assert.NoError(t, util.CopyDir(path.Join(filepath.Dir(setting.AppPath), "integrations/gitea-repositories-meta"), setting.RepoRootPath))
@@ -527,7 +528,7 @@ func GetCSRF(t testing.TB, session *TestSession, urlStr string) string {
 // within a single test this is required
 func resetFixtures(t *testing.T) {
 	assert.NoError(t, queue.GetManager().FlushAll(context.Background(), -1))
-	assert.NoError(t, db.LoadFixtures())
+	assert.NoError(t, unittest.LoadFixtures())
 	assert.NoError(t, util.RemoveAll(setting.RepoRootPath))
 	assert.NoError(t, util.CopyDir(path.Join(filepath.Dir(setting.AppPath), "integrations/gitea-repositories-meta"), setting.RepoRootPath))
 }
diff --git a/integrations/migrate_test.go b/integrations/migrate_test.go
index c0d5d4fc75..b9fcfb2827 100644
--- a/integrations/migrate_test.go
+++ b/integrations/migrate_test.go
@@ -8,6 +8,8 @@ import (
 	"os"
 	"testing"
 
+	"code.gitea.io/gitea/models/unittest"
+
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/modules/migrations"
@@ -17,7 +19,7 @@ import (
 )
 
 func TestMigrateLocalPath(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	adminUser := db.AssertExistsAndLoadBean(t, &models.User{Name: "user1"}).(*models.User)
 
diff --git a/integrations/repofiles_delete_test.go b/integrations/repofiles_delete_test.go
index 22fef4b03e..8150673e2b 100644
--- a/integrations/repofiles_delete_test.go
+++ b/integrations/repofiles_delete_test.go
@@ -8,8 +8,9 @@ import (
 	"net/url"
 	"testing"
 
+	"code.gitea.io/gitea/models/unittest"
+
 	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/modules/repofiles"
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/test"
@@ -67,7 +68,7 @@ func TestDeleteRepoFile(t *testing.T) {
 
 func testDeleteRepoFile(t *testing.T, u *url.URL) {
 	// setup
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1")
 	ctx.SetParams(":id", "1")
 	test.LoadRepo(t, ctx, 1)
@@ -106,7 +107,7 @@ func TestDeleteRepoFileWithoutBranchNames(t *testing.T) {
 
 func testDeleteRepoFileWithoutBranchNames(t *testing.T, u *url.URL) {
 	// setup
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1")
 	ctx.SetParams(":id", "1")
 	test.LoadRepo(t, ctx, 1)
@@ -136,7 +137,7 @@ func testDeleteRepoFileWithoutBranchNames(t *testing.T, u *url.URL) {
 
 func TestDeleteRepoFileErrors(t *testing.T) {
 	// setup
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1")
 	ctx.SetParams(":id", "1")
 	test.LoadRepo(t, ctx, 1)
diff --git a/models/access_test.go b/models/access_test.go
index 2f641bb9b5..af799ebcde 100644
--- a/models/access_test.go
+++ b/models/access_test.go
@@ -8,11 +8,12 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestAccessLevel(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user2 := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	user5 := db.AssertExistsAndLoadBean(t, &User{ID: 5}).(*User)
@@ -63,7 +64,7 @@ func TestAccessLevel(t *testing.T) {
 }
 
 func TestHasAccess(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user1 := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	user2 := db.AssertExistsAndLoadBean(t, &User{ID: 5}).(*User)
@@ -89,7 +90,7 @@ func TestHasAccess(t *testing.T) {
 }
 
 func TestUser_GetRepositoryAccesses(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user1 := db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
 	accesses, err := user1.GetRepositoryAccesses()
@@ -103,7 +104,7 @@ func TestUser_GetRepositoryAccesses(t *testing.T) {
 }
 
 func TestUser_GetAccessibleRepositories(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user1 := db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
 	repos, err := user1.GetAccessibleRepositories(0)
@@ -123,7 +124,7 @@ func TestUser_GetAccessibleRepositories(t *testing.T) {
 
 func TestRepository_RecalculateAccesses(t *testing.T) {
 	// test with organization repo
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	repo1 := db.AssertExistsAndLoadBean(t, &Repository{ID: 3}).(*Repository)
 	assert.NoError(t, repo1.GetOwner())
 
@@ -140,7 +141,7 @@ func TestRepository_RecalculateAccesses(t *testing.T) {
 
 func TestRepository_RecalculateAccesses2(t *testing.T) {
 	// test with non-organization repo
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	repo1 := db.AssertExistsAndLoadBean(t, &Repository{ID: 4}).(*Repository)
 	assert.NoError(t, repo1.GetOwner())
 
@@ -154,7 +155,7 @@ func TestRepository_RecalculateAccesses2(t *testing.T) {
 }
 
 func TestRepository_RecalculateAccesses3(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	team5 := db.AssertExistsAndLoadBean(t, &Team{ID: 5}).(*Team)
 	user29 := db.AssertExistsAndLoadBean(t, &User{ID: 29}).(*User)
 
diff --git a/models/action_test.go b/models/action_test.go
index 78090e3aad..85b8290cb2 100644
--- a/models/action_test.go
+++ b/models/action_test.go
@@ -9,13 +9,14 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/setting"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestAction_GetRepoPath(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	repo := db.AssertExistsAndLoadBean(t, &Repository{}).(*Repository)
 	owner := db.AssertExistsAndLoadBean(t, &User{ID: repo.OwnerID}).(*User)
 	action := &Action{RepoID: repo.ID}
@@ -23,7 +24,7 @@ func TestAction_GetRepoPath(t *testing.T) {
 }
 
 func TestAction_GetRepoLink(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	repo := db.AssertExistsAndLoadBean(t, &Repository{}).(*Repository)
 	owner := db.AssertExistsAndLoadBean(t, &User{ID: repo.OwnerID}).(*User)
 	action := &Action{RepoID: repo.ID}
@@ -34,7 +35,7 @@ func TestAction_GetRepoLink(t *testing.T) {
 
 func TestGetFeeds(t *testing.T) {
 	// test with an individual user
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 
 	actions, err := GetFeeds(GetFeedsOptions{
@@ -62,7 +63,7 @@ func TestGetFeeds(t *testing.T) {
 
 func TestGetFeeds2(t *testing.T) {
 	// test with an organization user
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	org := db.AssertExistsAndLoadBean(t, &User{ID: 3}).(*User)
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 
diff --git a/models/admin_test.go b/models/admin_test.go
index 316ed5cb68..ea060f9726 100644
--- a/models/admin_test.go
+++ b/models/admin_test.go
@@ -8,6 +8,7 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -20,7 +21,7 @@ func TestNotice_TrStr(t *testing.T) {
 }
 
 func TestCreateNotice(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	noticeBean := &Notice{
 		Type:        NoticeRepository,
@@ -32,7 +33,7 @@ func TestCreateNotice(t *testing.T) {
 }
 
 func TestCreateRepositoryNotice(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	noticeBean := &Notice{
 		Type:        NoticeRepository,
@@ -46,12 +47,12 @@ func TestCreateRepositoryNotice(t *testing.T) {
 // TODO TestRemoveAllWithNotice
 
 func TestCountNotices(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	assert.Equal(t, int64(3), CountNotices())
 }
 
 func TestNotices(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	notices, err := Notices(1, 2)
 	assert.NoError(t, err)
@@ -68,7 +69,7 @@ func TestNotices(t *testing.T) {
 }
 
 func TestDeleteNotice(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	db.AssertExistsAndLoadBean(t, &Notice{ID: 3})
 	assert.NoError(t, DeleteNotice(3))
@@ -77,7 +78,7 @@ func TestDeleteNotice(t *testing.T) {
 
 func TestDeleteNotices(t *testing.T) {
 	// delete a non-empty range
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	db.AssertExistsAndLoadBean(t, &Notice{ID: 1})
 	db.AssertExistsAndLoadBean(t, &Notice{ID: 2})
@@ -90,7 +91,7 @@ func TestDeleteNotices(t *testing.T) {
 
 func TestDeleteNotices2(t *testing.T) {
 	// delete an empty range
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	db.AssertExistsAndLoadBean(t, &Notice{ID: 1})
 	db.AssertExistsAndLoadBean(t, &Notice{ID: 2})
@@ -102,7 +103,7 @@ func TestDeleteNotices2(t *testing.T) {
 }
 
 func TestDeleteNoticesByIDs(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	db.AssertExistsAndLoadBean(t, &Notice{ID: 1})
 	db.AssertExistsAndLoadBean(t, &Notice{ID: 2})
diff --git a/models/attachment_test.go b/models/attachment_test.go
index c7f456341c..bc8114fa67 100644
--- a/models/attachment_test.go
+++ b/models/attachment_test.go
@@ -9,11 +9,12 @@ import (
 
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/models/unit"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestIncreaseDownloadCount(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	attachment, err := GetAttachmentByUUID("a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11")
 	assert.NoError(t, err)
@@ -29,7 +30,7 @@ func TestIncreaseDownloadCount(t *testing.T) {
 }
 
 func TestGetByCommentOrIssueID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// count of attachments from issue ID
 	attachments, err := GetAttachmentsByIssueID(1)
@@ -42,7 +43,7 @@ func TestGetByCommentOrIssueID(t *testing.T) {
 }
 
 func TestDeleteAttachments(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	count, err := DeleteAttachmentsByIssue(4, false)
 	assert.NoError(t, err)
@@ -62,7 +63,7 @@ func TestDeleteAttachments(t *testing.T) {
 }
 
 func TestGetAttachmentByID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	attach, err := GetAttachmentByID(1)
 	assert.NoError(t, err)
@@ -78,7 +79,7 @@ func TestAttachment_DownloadURL(t *testing.T) {
 }
 
 func TestUpdateAttachment(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	attach, err := GetAttachmentByID(1)
 	assert.NoError(t, err)
@@ -91,7 +92,7 @@ func TestUpdateAttachment(t *testing.T) {
 }
 
 func TestGetAttachmentsByUUIDs(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	attachList, err := GetAttachmentsByUUIDs(db.DefaultContext, []string{"a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11", "a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a17", "not-existing-uuid"})
 	assert.NoError(t, err)
@@ -103,7 +104,7 @@ func TestGetAttachmentsByUUIDs(t *testing.T) {
 }
 
 func TestLinkedRepository(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	testCases := []struct {
 		name             string
 		attachID         int64
diff --git a/models/branches_test.go b/models/branches_test.go
index e9a32666f9..d7233fba65 100644
--- a/models/branches_test.go
+++ b/models/branches_test.go
@@ -8,11 +8,12 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestAddDeletedBranch(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
 	firstBranch := db.AssertExistsAndLoadBean(t, &DeletedBranch{ID: 1}).(*DeletedBranch)
 
@@ -21,7 +22,7 @@ func TestAddDeletedBranch(t *testing.T) {
 }
 
 func TestGetDeletedBranches(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
 
 	branches, err := repo.GetDeletedBranches()
@@ -30,14 +31,14 @@ func TestGetDeletedBranches(t *testing.T) {
 }
 
 func TestGetDeletedBranch(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	firstBranch := db.AssertExistsAndLoadBean(t, &DeletedBranch{ID: 1}).(*DeletedBranch)
 
 	assert.NotNil(t, getDeletedBranch(t, firstBranch))
 }
 
 func TestDeletedBranchLoadUser(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	firstBranch := db.AssertExistsAndLoadBean(t, &DeletedBranch{ID: 1}).(*DeletedBranch)
 	secondBranch := db.AssertExistsAndLoadBean(t, &DeletedBranch{ID: 2}).(*DeletedBranch)
@@ -56,7 +57,7 @@ func TestDeletedBranchLoadUser(t *testing.T) {
 }
 
 func TestRemoveDeletedBranch(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
 
 	firstBranch := db.AssertExistsAndLoadBean(t, &DeletedBranch{ID: 1}).(*DeletedBranch)
@@ -81,7 +82,7 @@ func getDeletedBranch(t *testing.T, branch *DeletedBranch) *DeletedBranch {
 }
 
 func TestFindRenamedBranch(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	branch, exist, err := FindRenamedBranch(1, "dev")
 	assert.NoError(t, err)
 	assert.Equal(t, true, exist)
@@ -93,7 +94,7 @@ func TestFindRenamedBranch(t *testing.T) {
 }
 
 func TestRenameBranch(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	repo1 := db.AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
 	_isDefault := false
 
@@ -130,7 +131,7 @@ func TestRenameBranch(t *testing.T) {
 }
 
 func TestOnlyGetDeletedBranchOnCorrectRepo(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// Get deletedBranch with ID of 1 on repo with ID 2.
 	// This should return a nil branch as this deleted branch
diff --git a/models/commit_status_test.go b/models/commit_status_test.go
index 7f4709144c..b113346a41 100644
--- a/models/commit_status_test.go
+++ b/models/commit_status_test.go
@@ -8,12 +8,13 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/structs"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestGetCommitStatuses(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repo1 := db.AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
 
diff --git a/models/consistency.go b/models/consistency.go
index ab81456916..64c6b240a2 100644
--- a/models/consistency.go
+++ b/models/consistency.go
@@ -7,29 +7,16 @@ package models
 import (
 	"reflect"
 	"strings"
-	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/modules/unittestbridge"
 
-	"github.com/stretchr/testify/assert"
 	"xorm.io/builder"
 )
 
-// CheckConsistencyForAll test that the entire database is consistent
-func CheckConsistencyForAll(t *testing.T) {
-	CheckConsistencyFor(t,
-		&User{},
-		&Repository{},
-		&Issue{},
-		&PullRequest{},
-		&Milestone{},
-		&Label{},
-		&Team{},
-		&Action{})
-}
-
 // CheckConsistencyFor test that all matching database entries are consistent
-func CheckConsistencyFor(t *testing.T, beansToCheck ...interface{}) {
+func CheckConsistencyFor(t unittestbridge.Tester, beansToCheck ...interface{}) {
+	ta := unittestbridge.NewAsserter(t)
 	for _, bean := range beansToCheck {
 		sliceType := reflect.SliceOf(reflect.TypeOf(bean))
 		sliceValue := reflect.MakeSlice(sliceType, 0, 10)
@@ -37,133 +24,133 @@ func CheckConsistencyFor(t *testing.T, beansToCheck ...interface{}) {
 		ptrToSliceValue := reflect.New(sliceType)
 		ptrToSliceValue.Elem().Set(sliceValue)
 
-		assert.NoError(t, db.GetEngine(db.DefaultContext).Table(bean).Find(ptrToSliceValue.Interface()))
+		ta.NoError(db.GetEngine(db.DefaultContext).Table(bean).Find(ptrToSliceValue.Interface()))
 		sliceValue = ptrToSliceValue.Elem()
 
 		for i := 0; i < sliceValue.Len(); i++ {
 			entity := sliceValue.Index(i).Interface()
-			checkForConsistency(entity, t)
+			checkForConsistency(ta, entity)
 		}
 	}
 }
 
-func checkForConsistency(bean interface{}, t *testing.T) {
+func checkForConsistency(ta unittestbridge.Asserter, bean interface{}) {
 	switch b := bean.(type) {
 	case *User:
-		checkForUserConsistency(b, t)
+		checkForUserConsistency(b, ta)
 	case *Repository:
-		checkForRepoConsistency(b, t)
+		checkForRepoConsistency(b, ta)
 	case *Issue:
-		checkForIssueConsistency(b, t)
+		checkForIssueConsistency(b, ta)
 	case *PullRequest:
-		checkForPullRequestConsistency(b, t)
+		checkForPullRequestConsistency(b, ta)
 	case *Milestone:
-		checkForMilestoneConsistency(b, t)
+		checkForMilestoneConsistency(b, ta)
 	case *Label:
-		checkForLabelConsistency(b, t)
+		checkForLabelConsistency(b, ta)
 	case *Team:
-		checkForTeamConsistency(b, t)
+		checkForTeamConsistency(b, ta)
 	case *Action:
-		checkForActionConsistency(b, t)
+		checkForActionConsistency(b, ta)
 	default:
-		t.Errorf("unknown bean type: %#v", bean)
+		ta.Errorf("unknown bean type: %#v", bean)
 	}
 }
 
 // getCount get the count of database entries matching bean
-func getCount(t *testing.T, e db.Engine, bean interface{}) int64 {
+func getCount(ta unittestbridge.Asserter, e db.Engine, bean interface{}) int64 {
 	count, err := e.Count(bean)
-	assert.NoError(t, err)
+	ta.NoError(err)
 	return count
 }
 
 // assertCount test the count of database entries matching bean
-func assertCount(t *testing.T, bean interface{}, expected int) {
-	assert.EqualValues(t, expected, getCount(t, db.GetEngine(db.DefaultContext), bean),
+func assertCount(ta unittestbridge.Asserter, bean interface{}, expected int) {
+	ta.EqualValues(expected, getCount(ta, db.GetEngine(db.DefaultContext), bean),
 		"Failed consistency test, the counted bean (of type %T) was %+v", bean, bean)
 }
 
-func checkForUserConsistency(user *User, t *testing.T) {
-	assertCount(t, &Repository{OwnerID: user.ID}, user.NumRepos)
-	assertCount(t, &Star{UID: user.ID}, user.NumStars)
-	assertCount(t, &OrgUser{OrgID: user.ID}, user.NumMembers)
-	assertCount(t, &Team{OrgID: user.ID}, user.NumTeams)
-	assertCount(t, &Follow{UserID: user.ID}, user.NumFollowing)
-	assertCount(t, &Follow{FollowID: user.ID}, user.NumFollowers)
+func checkForUserConsistency(user *User, ta unittestbridge.Asserter) {
+	assertCount(ta, &Repository{OwnerID: user.ID}, user.NumRepos)
+	assertCount(ta, &Star{UID: user.ID}, user.NumStars)
+	assertCount(ta, &OrgUser{OrgID: user.ID}, user.NumMembers)
+	assertCount(ta, &Team{OrgID: user.ID}, user.NumTeams)
+	assertCount(ta, &Follow{UserID: user.ID}, user.NumFollowing)
+	assertCount(ta, &Follow{FollowID: user.ID}, user.NumFollowers)
 	if user.Type != UserTypeOrganization {
-		assert.EqualValues(t, 0, user.NumMembers)
-		assert.EqualValues(t, 0, user.NumTeams)
+		ta.EqualValues(0, user.NumMembers)
+		ta.EqualValues(0, user.NumTeams)
 	}
 }
 
-func checkForRepoConsistency(repo *Repository, t *testing.T) {
-	assert.Equal(t, repo.LowerName, strings.ToLower(repo.Name), "repo: %+v", repo)
-	assertCount(t, &Star{RepoID: repo.ID}, repo.NumStars)
-	assertCount(t, &Milestone{RepoID: repo.ID}, repo.NumMilestones)
-	assertCount(t, &Repository{ForkID: repo.ID}, repo.NumForks)
+func checkForRepoConsistency(repo *Repository, ta unittestbridge.Asserter) {
+	ta.Equal(repo.LowerName, strings.ToLower(repo.Name), "repo: %+v", repo)
+	assertCount(ta, &Star{RepoID: repo.ID}, repo.NumStars)
+	assertCount(ta, &Milestone{RepoID: repo.ID}, repo.NumMilestones)
+	assertCount(ta, &Repository{ForkID: repo.ID}, repo.NumForks)
 	if repo.IsFork {
-		db.AssertExistsAndLoadBean(t, &Repository{ID: repo.ForkID})
+		db.AssertExistsAndLoadBean(ta, &Repository{ID: repo.ForkID})
 	}
 
-	actual := getCount(t, db.GetEngine(db.DefaultContext).Where("Mode<>?", RepoWatchModeDont), &Watch{RepoID: repo.ID})
-	assert.EqualValues(t, repo.NumWatches, actual,
+	actual := getCount(ta, db.GetEngine(db.DefaultContext).Where("Mode<>?", RepoWatchModeDont), &Watch{RepoID: repo.ID})
+	ta.EqualValues(repo.NumWatches, actual,
 		"Unexpected number of watches for repo %+v", repo)
 
-	actual = getCount(t, db.GetEngine(db.DefaultContext).Where("is_pull=?", false), &Issue{RepoID: repo.ID})
-	assert.EqualValues(t, repo.NumIssues, actual,
+	actual = getCount(ta, db.GetEngine(db.DefaultContext).Where("is_pull=?", false), &Issue{RepoID: repo.ID})
+	ta.EqualValues(repo.NumIssues, actual,
 		"Unexpected number of issues for repo %+v", repo)
 
-	actual = getCount(t, db.GetEngine(db.DefaultContext).Where("is_pull=? AND is_closed=?", false, true), &Issue{RepoID: repo.ID})
-	assert.EqualValues(t, repo.NumClosedIssues, actual,
+	actual = getCount(ta, db.GetEngine(db.DefaultContext).Where("is_pull=? AND is_closed=?", false, true), &Issue{RepoID: repo.ID})
+	ta.EqualValues(repo.NumClosedIssues, actual,
 		"Unexpected number of closed issues for repo %+v", repo)
 
-	actual = getCount(t, db.GetEngine(db.DefaultContext).Where("is_pull=?", true), &Issue{RepoID: repo.ID})
-	assert.EqualValues(t, repo.NumPulls, actual,
+	actual = getCount(ta, db.GetEngine(db.DefaultContext).Where("is_pull=?", true), &Issue{RepoID: repo.ID})
+	ta.EqualValues(repo.NumPulls, actual,
 		"Unexpected number of pulls for repo %+v", repo)
 
-	actual = getCount(t, db.GetEngine(db.DefaultContext).Where("is_pull=? AND is_closed=?", true, true), &Issue{RepoID: repo.ID})
-	assert.EqualValues(t, repo.NumClosedPulls, actual,
+	actual = getCount(ta, db.GetEngine(db.DefaultContext).Where("is_pull=? AND is_closed=?", true, true), &Issue{RepoID: repo.ID})
+	ta.EqualValues(repo.NumClosedPulls, actual,
 		"Unexpected number of closed pulls for repo %+v", repo)
 
-	actual = getCount(t, db.GetEngine(db.DefaultContext).Where("is_closed=?", true), &Milestone{RepoID: repo.ID})
-	assert.EqualValues(t, repo.NumClosedMilestones, actual,
+	actual = getCount(ta, db.GetEngine(db.DefaultContext).Where("is_closed=?", true), &Milestone{RepoID: repo.ID})
+	ta.EqualValues(repo.NumClosedMilestones, actual,
 		"Unexpected number of closed milestones for repo %+v", repo)
 }
 
-func checkForIssueConsistency(issue *Issue, t *testing.T) {
-	actual := getCount(t, db.GetEngine(db.DefaultContext).Where("type=?", CommentTypeComment), &Comment{IssueID: issue.ID})
-	assert.EqualValues(t, issue.NumComments, actual,
+func checkForIssueConsistency(issue *Issue, ta unittestbridge.Asserter) {
+	actual := getCount(ta, db.GetEngine(db.DefaultContext).Where("type=?", CommentTypeComment), &Comment{IssueID: issue.ID})
+	ta.EqualValues(issue.NumComments, actual,
 		"Unexpected number of comments for issue %+v", issue)
 	if issue.IsPull {
-		pr := db.AssertExistsAndLoadBean(t, &PullRequest{IssueID: issue.ID}).(*PullRequest)
-		assert.EqualValues(t, pr.Index, issue.Index)
+		pr := db.AssertExistsAndLoadBean(ta, &PullRequest{IssueID: issue.ID}).(*PullRequest)
+		ta.EqualValues(pr.Index, issue.Index)
 	}
 }
 
-func checkForPullRequestConsistency(pr *PullRequest, t *testing.T) {
-	issue := db.AssertExistsAndLoadBean(t, &Issue{ID: pr.IssueID}).(*Issue)
-	assert.True(t, issue.IsPull)
-	assert.EqualValues(t, issue.Index, pr.Index)
+func checkForPullRequestConsistency(pr *PullRequest, ta unittestbridge.Asserter) {
+	issue := db.AssertExistsAndLoadBean(ta, &Issue{ID: pr.IssueID}).(*Issue)
+	ta.True(issue.IsPull)
+	ta.EqualValues(issue.Index, pr.Index)
 }
 
-func checkForMilestoneConsistency(milestone *Milestone, t *testing.T) {
-	assertCount(t, &Issue{MilestoneID: milestone.ID}, milestone.NumIssues)
+func checkForMilestoneConsistency(milestone *Milestone, ta unittestbridge.Asserter) {
+	assertCount(ta, &Issue{MilestoneID: milestone.ID}, milestone.NumIssues)
 
-	actual := getCount(t, db.GetEngine(db.DefaultContext).Where("is_closed=?", true), &Issue{MilestoneID: milestone.ID})
-	assert.EqualValues(t, milestone.NumClosedIssues, actual,
+	actual := getCount(ta, db.GetEngine(db.DefaultContext).Where("is_closed=?", true), &Issue{MilestoneID: milestone.ID})
+	ta.EqualValues(milestone.NumClosedIssues, actual,
 		"Unexpected number of closed issues for milestone %+v", milestone)
 
 	completeness := 0
 	if milestone.NumIssues > 0 {
 		completeness = milestone.NumClosedIssues * 100 / milestone.NumIssues
 	}
-	assert.Equal(t, completeness, milestone.Completeness)
+	ta.Equal(completeness, milestone.Completeness)
 }
 
-func checkForLabelConsistency(label *Label, t *testing.T) {
+func checkForLabelConsistency(label *Label, ta unittestbridge.Asserter) {
 	issueLabels := make([]*IssueLabel, 0, 10)
-	assert.NoError(t, db.GetEngine(db.DefaultContext).Find(&issueLabels, &IssueLabel{LabelID: label.ID}))
-	assert.EqualValues(t, label.NumIssues, len(issueLabels),
+	ta.NoError(db.GetEngine(db.DefaultContext).Find(&issueLabels, &IssueLabel{LabelID: label.ID}))
+	ta.EqualValues(label.NumIssues, len(issueLabels),
 		"Unexpected number of issue for label %+v", label)
 
 	issueIDs := make([]int64, len(issueLabels))
@@ -173,20 +160,20 @@ func checkForLabelConsistency(label *Label, t *testing.T) {
 
 	expected := int64(0)
 	if len(issueIDs) > 0 {
-		expected = getCount(t, db.GetEngine(db.DefaultContext).In("id", issueIDs).Where("is_closed=?", true), &Issue{})
+		expected = getCount(ta, db.GetEngine(db.DefaultContext).In("id", issueIDs).Where("is_closed=?", true), &Issue{})
 	}
-	assert.EqualValues(t, expected, label.NumClosedIssues,
+	ta.EqualValues(expected, label.NumClosedIssues,
 		"Unexpected number of closed issues for label %+v", label)
 }
 
-func checkForTeamConsistency(team *Team, t *testing.T) {
-	assertCount(t, &TeamUser{TeamID: team.ID}, team.NumMembers)
-	assertCount(t, &TeamRepo{TeamID: team.ID}, team.NumRepos)
+func checkForTeamConsistency(team *Team, ta unittestbridge.Asserter) {
+	assertCount(ta, &TeamUser{TeamID: team.ID}, team.NumMembers)
+	assertCount(ta, &TeamRepo{TeamID: team.ID}, team.NumRepos)
 }
 
-func checkForActionConsistency(action *Action, t *testing.T) {
-	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: action.RepoID}).(*Repository)
-	assert.Equal(t, repo.IsPrivate, action.IsPrivate, "action: %+v", action)
+func checkForActionConsistency(action *Action, ta unittestbridge.Asserter) {
+	repo := db.AssertExistsAndLoadBean(ta, &Repository{ID: action.RepoID}).(*Repository)
+	ta.Equal(repo.IsPrivate, action.IsPrivate, "action: %+v", action)
 }
 
 // CountOrphanedLabels return count of labels witch are broken and not accessible via ui anymore
diff --git a/models/consistency_test.go b/models/consistency_test.go
index 8332b5d761..6995f47c87 100644
--- a/models/consistency_test.go
+++ b/models/consistency_test.go
@@ -8,11 +8,12 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestDeleteOrphanedObjects(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	countBefore, err := db.GetEngine(db.DefaultContext).Count(&PullRequest{})
 	assert.NoError(t, err)
diff --git a/models/db/engine.go b/models/db/engine.go
index d5f2470a7a..d1b279e016 100755
--- a/models/db/engine.go
+++ b/models/db/engine.go
@@ -124,7 +124,8 @@ func NewEngine() (*xorm.Engine, error) {
 	return engine, nil
 }
 
-func syncTables() error {
+//SyncAllTables sync the schemas of all tables, is required by unit test code
+func SyncAllTables() error {
 	return x.StoreEngine("InnoDB").Sync2(tables...)
 }
 
@@ -176,7 +177,7 @@ func InitEngineWithMigration(ctx context.Context, migrateFunc func(*xorm.Engine)
 		return fmt.Errorf("migrate: %v", err)
 	}
 
-	if err = syncTables(); err != nil {
+	if err = SyncAllTables(); err != nil {
 		return fmt.Errorf("sync database struct error: %v", err)
 	}
 
diff --git a/models/db/main_test.go b/models/db/paginator/main_test.go
index f34ff65813..601ed89710 100644
--- a/models/db/main_test.go
+++ b/models/db/paginator/main_test.go
@@ -2,13 +2,15 @@
 // Use of this source code is governed by a MIT-style
 // license that can be found in the LICENSE file.
 
-package db
+package paginator
 
 import (
 	"path/filepath"
 	"testing"
+
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	MainTest(m, filepath.Join("..", ".."))
+	unittest.MainTest(m, filepath.Join("..", "..", ".."))
 }
diff --git a/models/db/paginator/paginator.go b/models/db/paginator/paginator.go
new file mode 100644
index 0000000000..747539f30e
--- /dev/null
+++ b/models/db/paginator/paginator.go
@@ -0,0 +1,8 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package paginator
+
+// dummy only. in the future, the models/db/list_options.go should be moved here to decouple from db package
+// otherwise the unit test will cause cycle import
diff --git a/models/db/list_options_test.go b/models/db/paginator/paginator_test.go
index 2c860afdfb..fdb8eee441 100644
--- a/models/db/list_options_test.go
+++ b/models/db/paginator/paginator_test.go
@@ -2,11 +2,12 @@
 // Use of this source code is governed by a MIT-style
 // license that can be found in the LICENSE file.
 
-package db
+package paginator
 
 import (
 	"testing"
 
+	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/modules/setting"
 
 	"github.com/stretchr/testify/assert"
@@ -14,35 +15,35 @@ import (
 
 func TestPaginator(t *testing.T) {
 	cases := []struct {
-		Paginator
+		db.Paginator
 		Skip  int
 		Take  int
 		Start int
 		End   int
 	}{
 		{
-			Paginator: &ListOptions{Page: -1, PageSize: -1},
+			Paginator: &db.ListOptions{Page: -1, PageSize: -1},
 			Skip:      0,
 			Take:      setting.API.DefaultPagingNum,
 			Start:     0,
 			End:       setting.API.DefaultPagingNum,
 		},
 		{
-			Paginator: &ListOptions{Page: 2, PageSize: 10},
+			Paginator: &db.ListOptions{Page: 2, PageSize: 10},
 			Skip:      10,
 			Take:      10,
 			Start:     10,
 			End:       20,
 		},
 		{
-			Paginator: NewAbsoluteListOptions(-1, -1),
+			Paginator: db.NewAbsoluteListOptions(-1, -1),
 			Skip:      0,
 			Take:      setting.API.DefaultPagingNum,
 			Start:     0,
 			End:       setting.API.DefaultPagingNum,
 		},
 		{
-			Paginator: NewAbsoluteListOptions(2, 10),
+			Paginator: db.NewAbsoluteListOptions(2, 10),
 			Skip:      2,
 			Take:      10,
 			Start:     2,
diff --git a/models/db/unit_tests.go b/models/db/unit_tests.go
index 6f079c8676..2b1691726f 100644
--- a/models/db/unit_tests.go
+++ b/models/db/unit_tests.go
@@ -6,157 +6,26 @@ package db
 
 import (
 	"context"
-	"fmt"
 	"math"
-	"net/url"
-	"os"
-	"path/filepath"
-	"testing"
 
-	"code.gitea.io/gitea/modules/base"
-	"code.gitea.io/gitea/modules/setting"
-	"code.gitea.io/gitea/modules/storage"
-	"code.gitea.io/gitea/modules/util"
+	"code.gitea.io/gitea/modules/unittestbridge"
 
-	"github.com/stretchr/testify/assert"
 	"xorm.io/xorm"
-	"xorm.io/xorm/names"
 )
 
+// Code in this file is mainly used by models.CheckConsistencyFor, which is not in the unit test for various reasons.
+// In the future if we can decouple CheckConsistencyFor into separate unit test code, then this file can be moved into unittest package too.
+
 // NonexistentID an ID that will never exist
 const NonexistentID = int64(math.MaxInt64)
 
-// giteaRoot a path to the gitea root
-var (
-	giteaRoot   string
-	fixturesDir string
-)
-
-// FixturesDir returns the fixture directory
-func FixturesDir() string {
-	return fixturesDir
-}
-
-func fatalTestError(fmtStr string, args ...interface{}) {
-	fmt.Fprintf(os.Stderr, fmtStr, args...)
-	os.Exit(1)
-}
-
-// MainTest a reusable TestMain(..) function for unit tests that need to use a
-// test database. Creates the test database, and sets necessary settings.
-func MainTest(m *testing.M, pathToGiteaRoot string, fixtureFiles ...string) {
-	var err error
-	giteaRoot = pathToGiteaRoot
-	fixturesDir = filepath.Join(pathToGiteaRoot, "models", "fixtures")
-
-	var opts FixturesOptions
-	if len(fixtureFiles) == 0 {
-		opts.Dir = fixturesDir
-	} else {
-		for _, f := range fixtureFiles {
-			if len(f) != 0 {
-				opts.Files = append(opts.Files, filepath.Join(fixturesDir, f))
-			}
-		}
-	}
-
-	if err = CreateTestEngine(opts); err != nil {
-		fatalTestError("Error creating test engine: %v\n", err)
-	}
-
-	setting.AppURL = "https://try.gitea.io/"
-	setting.RunUser = "runuser"
-	setting.SSH.Port = 3000
-	setting.SSH.Domain = "try.gitea.io"
-	setting.Database.UseSQLite3 = true
-	setting.RepoRootPath, err = os.MkdirTemp(os.TempDir(), "repos")
-	if err != nil {
-		fatalTestError("TempDir: %v\n", err)
-	}
-	setting.AppDataPath, err = os.MkdirTemp(os.TempDir(), "appdata")
-	if err != nil {
-		fatalTestError("TempDir: %v\n", err)
-	}
-	setting.AppWorkPath = pathToGiteaRoot
-	setting.StaticRootPath = pathToGiteaRoot
-	setting.GravatarSourceURL, err = url.Parse("https://secure.gravatar.com/avatar/")
-	if err != nil {
-		fatalTestError("url.Parse: %v\n", err)
-	}
-	setting.Attachment.Storage.Path = filepath.Join(setting.AppDataPath, "attachments")
-
-	setting.LFS.Storage.Path = filepath.Join(setting.AppDataPath, "lfs")
-
-	setting.Avatar.Storage.Path = filepath.Join(setting.AppDataPath, "avatars")
-
-	setting.RepoAvatar.Storage.Path = filepath.Join(setting.AppDataPath, "repo-avatars")
-
-	setting.RepoArchive.Storage.Path = filepath.Join(setting.AppDataPath, "repo-archive")
-
-	if err = storage.Init(); err != nil {
-		fatalTestError("storage.Init: %v\n", err)
-	}
-
-	if err = util.RemoveAll(setting.RepoRootPath); err != nil {
-		fatalTestError("util.RemoveAll: %v\n", err)
-	}
-	if err = util.CopyDir(filepath.Join(pathToGiteaRoot, "integrations", "gitea-repositories-meta"), setting.RepoRootPath); err != nil {
-		fatalTestError("util.CopyDir: %v\n", err)
-	}
-
-	exitStatus := m.Run()
-	if err = util.RemoveAll(setting.RepoRootPath); err != nil {
-		fatalTestError("util.RemoveAll: %v\n", err)
-	}
-	if err = util.RemoveAll(setting.AppDataPath); err != nil {
-		fatalTestError("util.RemoveAll: %v\n", err)
-	}
-	os.Exit(exitStatus)
-}
-
-// FixturesOptions fixtures needs to be loaded options
-type FixturesOptions struct {
-	Dir   string
-	Files []string
-}
-
-// CreateTestEngine creates a memory database and loads the fixture data from fixturesDir
-func CreateTestEngine(opts FixturesOptions) error {
-	var err error
-	x, err = xorm.NewEngine("sqlite3", "file::memory:?cache=shared&_txlock=immediate")
-	if err != nil {
-		return err
-	}
-	x.SetMapper(names.GonicMapper{})
-	if err = syncTables(); err != nil {
-		return err
-	}
-	switch os.Getenv("GITEA_UNIT_TESTS_VERBOSE") {
-	case "true", "1":
-		x.ShowSQL(true)
-	}
-
+//SetUnitTestEngine is used by unit test code
+func SetUnitTestEngine(eng *xorm.Engine) {
+	x = eng
 	DefaultContext = &Context{
 		Context: context.Background(),
 		e:       x,
 	}
-
-	return InitFixtures(opts)
-}
-
-// PrepareTestDatabase load test fixtures into test database
-func PrepareTestDatabase() error {
-	return LoadFixtures()
-}
-
-// PrepareTestEnv prepares the environment for unit tests. Can only be called
-// by tests that use the above MainTest(..) function.
-func PrepareTestEnv(t testing.TB) {
-	assert.NoError(t, PrepareTestDatabase())
-	assert.NoError(t, util.RemoveAll(setting.RepoRootPath))
-	metaPath := filepath.Join(giteaRoot, "integrations", "gitea-repositories-meta")
-	assert.NoError(t, util.CopyDir(metaPath, setting.RepoRootPath))
-	base.SetupGiteaRoot() // Makes sure GITEA_ROOT is set
 }
 
 type testCond struct {
@@ -182,10 +51,6 @@ func whereConditions(sess *xorm.Session, conditions []interface{}) {
 
 // LoadBeanIfExists loads beans from fixture database if exist
 func LoadBeanIfExists(bean interface{}, conditions ...interface{}) (bool, error) {
-	return loadBeanIfExists(bean, conditions...)
-}
-
-func loadBeanIfExists(bean interface{}, conditions ...interface{}) (bool, error) {
 	sess := x.NewSession()
 	defer sess.Close()
 	whereConditions(sess, conditions)
@@ -193,61 +58,68 @@ func loadBeanIfExists(bean interface{}, conditions ...interface{}) (bool, error)
 }
 
 // BeanExists for testing, check if a bean exists
-func BeanExists(t testing.TB, bean interface{}, conditions ...interface{}) bool {
-	exists, err := loadBeanIfExists(bean, conditions...)
-	assert.NoError(t, err)
+func BeanExists(t unittestbridge.Tester, bean interface{}, conditions ...interface{}) bool {
+	ta := unittestbridge.NewAsserter(t)
+	exists, err := LoadBeanIfExists(bean, conditions...)
+	ta.NoError(err)
 	return exists
 }
 
-// AssertExistsAndLoadBean assert that a bean exists and load it from the test
-// database
-func AssertExistsAndLoadBean(t testing.TB, bean interface{}, conditions ...interface{}) interface{} {
-	exists, err := loadBeanIfExists(bean, conditions...)
-	assert.NoError(t, err)
-	assert.True(t, exists,
+// AssertExistsAndLoadBean assert that a bean exists and load it from the test database
+func AssertExistsAndLoadBean(t unittestbridge.Tester, bean interface{}, conditions ...interface{}) interface{} {
+	ta := unittestbridge.NewAsserter(t)
+	exists, err := LoadBeanIfExists(bean, conditions...)
+	ta.NoError(err)
+	ta.True(exists,
 		"Expected to find %+v (of type %T, with conditions %+v), but did not",
 		bean, bean, conditions)
 	return bean
 }
 
 // GetCount get the count of a bean
-func GetCount(t testing.TB, bean interface{}, conditions ...interface{}) int {
+func GetCount(t unittestbridge.Tester, bean interface{}, conditions ...interface{}) int {
+	ta := unittestbridge.NewAsserter(t)
 	sess := x.NewSession()
 	defer sess.Close()
 	whereConditions(sess, conditions)
 	count, err := sess.Count(bean)
-	assert.NoError(t, err)
+	ta.NoError(err)
 	return int(count)
 }
 
 // AssertNotExistsBean assert that a bean does not exist in the test database
-func AssertNotExistsBean(t testing.TB, bean interface{}, conditions ...interface{}) {
-	exists, err := loadBeanIfExists(bean, conditions...)
-	assert.NoError(t, err)
-	assert.False(t, exists)
+func AssertNotExistsBean(t unittestbridge.Tester, bean interface{}, conditions ...interface{}) {
+	ta := unittestbridge.NewAsserter(t)
+	exists, err := LoadBeanIfExists(bean, conditions...)
+	ta.NoError(err)
+	ta.False(exists)
 }
 
 // AssertExistsIf asserts that a bean exists or does not exist, depending on
 // what is expected.
-func AssertExistsIf(t *testing.T, expected bool, bean interface{}, conditions ...interface{}) {
-	exists, err := loadBeanIfExists(bean, conditions...)
-	assert.NoError(t, err)
-	assert.Equal(t, expected, exists)
+func AssertExistsIf(t unittestbridge.Tester, expected bool, bean interface{}, conditions ...interface{}) {
+	ta := unittestbridge.NewAsserter(t)
+	exists, err := LoadBeanIfExists(bean, conditions...)
+	ta.NoError(err)
+	ta.Equal(expected, exists)
 }
 
 // AssertSuccessfulInsert assert that beans is successfully inserted
-func AssertSuccessfulInsert(t testing.TB, beans ...interface{}) {
+func AssertSuccessfulInsert(t unittestbridge.Tester, beans ...interface{}) {
+	ta := unittestbridge.NewAsserter(t)
 	_, err := x.Insert(beans...)
-	assert.NoError(t, err)
+	ta.NoError(err)
 }
 
 // AssertCount assert the count of a bean
-func AssertCount(t testing.TB, bean, expected interface{}) {
-	assert.EqualValues(t, expected, GetCount(t, bean))
+func AssertCount(t unittestbridge.Tester, bean, expected interface{}) {
+	ta := unittestbridge.NewAsserter(t)
+	ta.EqualValues(expected, GetCount(ta, bean))
 }
 
 // AssertInt64InRange assert value is in range [low, high]
-func AssertInt64InRange(t testing.TB, low, high, value int64) {
-	assert.True(t, value >= low && value <= high,
+func AssertInt64InRange(t unittestbridge.Tester, low, high, value int64) {
+	ta := unittestbridge.NewAsserter(t)
+	ta.True(value >= low && value <= high,
 		"Expected value in range [%d, %d], found %d", low, high, value)
 }
diff --git a/models/engine_test.go b/models/engine_test.go
index d97fc3cc19..75c854b185 100644
--- a/models/engine_test.go
+++ b/models/engine_test.go
@@ -10,13 +10,14 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/setting"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestDumpDatabase(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	dir, err := os.MkdirTemp(os.TempDir(), "dump")
 	assert.NoError(t, err)
diff --git a/models/fixture_test.go b/models/fixture_test.go
index 3c6ebc0685..0857341e44 100644
--- a/models/fixture_test.go
+++ b/models/fixture_test.go
@@ -9,21 +9,21 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/util"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestFixtureGeneration(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	test := func(gen func() (string, error), name string) {
 		expected, err := gen()
 		if !assert.NoError(t, err) {
 			return
 		}
-		bytes, err := os.ReadFile(filepath.Join(db.FixturesDir(), name+".yml"))
+		bytes, err := os.ReadFile(filepath.Join(unittest.FixturesDir(), name+".yml"))
 		if !assert.NoError(t, err) {
 			return
 		}
diff --git a/models/gpg_key_test.go b/models/gpg_key_test.go
index 7a3cbfd67f..3df25a10bb 100644
--- a/models/gpg_key_test.go
+++ b/models/gpg_key_test.go
@@ -9,6 +9,7 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/timeutil"
 
 	"github.com/stretchr/testify/assert"
@@ -193,7 +194,7 @@ Unknown GPG key with good email
 }
 
 func TestCheckGPGUserEmail(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	_ = db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
 
diff --git a/models/issue_assignees_test.go b/models/issue_assignees_test.go
index 5052df3dfb..f0bd5fca4b 100644
--- a/models/issue_assignees_test.go
+++ b/models/issue_assignees_test.go
@@ -8,11 +8,12 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestUpdateAssignee(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// Fake issue with assignees
 	issue, err := GetIssueWithAttrsByID(1)
@@ -62,7 +63,7 @@ func TestUpdateAssignee(t *testing.T) {
 }
 
 func TestMakeIDsFromAPIAssigneesToAdd(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	_ = db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
 	_ = db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
diff --git a/models/issue_comment_test.go b/models/issue_comment_test.go
index 78199881c6..d855b87bc4 100644
--- a/models/issue_comment_test.go
+++ b/models/issue_comment_test.go
@@ -9,11 +9,12 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestCreateComment(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	issue := db.AssertExistsAndLoadBean(t, &Issue{}).(*Issue)
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: issue.RepoID}).(*Repository)
@@ -42,7 +43,7 @@ func TestCreateComment(t *testing.T) {
 }
 
 func TestFetchCodeComments(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	issue := db.AssertExistsAndLoadBean(t, &Issue{ID: 2}).(*Issue)
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
diff --git a/models/issue_dependency_test.go b/models/issue_dependency_test.go
index 10872645b0..60fa587389 100644
--- a/models/issue_dependency_test.go
+++ b/models/issue_dependency_test.go
@@ -8,12 +8,13 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestCreateIssueDependency(t *testing.T) {
 	// Prepare
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user1, err := GetUserByID(1)
 	assert.NoError(t, err)
diff --git a/models/issue_label_test.go b/models/issue_label_test.go
index 93807a326f..c77ddfefaf 100644
--- a/models/issue_label_test.go
+++ b/models/issue_label_test.go
@@ -9,20 +9,21 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 // TODO TestGetLabelTemplateFile
 
 func TestLabel_CalOpenIssues(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	label := db.AssertExistsAndLoadBean(t, &Label{ID: 1}).(*Label)
 	label.CalOpenIssues()
 	assert.EqualValues(t, 2, label.NumOpenIssues)
 }
 
 func TestLabel_ForegroundColor(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	label := db.AssertExistsAndLoadBean(t, &Label{ID: 1}).(*Label)
 	assert.Equal(t, template.CSS("#000"), label.ForegroundColor())
 
@@ -31,7 +32,7 @@ func TestLabel_ForegroundColor(t *testing.T) {
 }
 
 func TestNewLabels(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	labels := []*Label{
 		{RepoID: 2, Name: "labelName2", Color: "#123456"},
 		{RepoID: 3, Name: "labelName3", Color: "#23456F"},
@@ -50,7 +51,7 @@ func TestNewLabels(t *testing.T) {
 }
 
 func TestGetLabelByID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	label, err := GetLabelByID(1)
 	assert.NoError(t, err)
 	assert.EqualValues(t, 1, label.ID)
@@ -60,7 +61,7 @@ func TestGetLabelByID(t *testing.T) {
 }
 
 func TestGetLabelInRepoByName(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	label, err := GetLabelInRepoByName(1, "label1")
 	assert.NoError(t, err)
 	assert.EqualValues(t, 1, label.ID)
@@ -74,7 +75,7 @@ func TestGetLabelInRepoByName(t *testing.T) {
 }
 
 func TestGetLabelInRepoByNames(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	labelIDs, err := GetLabelIDsInRepoByNames(1, []string{"label1", "label2"})
 	assert.NoError(t, err)
 
@@ -85,7 +86,7 @@ func TestGetLabelInRepoByNames(t *testing.T) {
 }
 
 func TestGetLabelInRepoByNamesDiscardsNonExistentLabels(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	// label3 doesn't exists.. See labels.yml
 	labelIDs, err := GetLabelIDsInRepoByNames(1, []string{"label1", "label2", "label3"})
 	assert.NoError(t, err)
@@ -98,7 +99,7 @@ func TestGetLabelInRepoByNamesDiscardsNonExistentLabels(t *testing.T) {
 }
 
 func TestGetLabelInRepoByID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	label, err := GetLabelInRepoByID(1, 1)
 	assert.NoError(t, err)
 	assert.EqualValues(t, 1, label.ID)
@@ -111,7 +112,7 @@ func TestGetLabelInRepoByID(t *testing.T) {
 }
 
 func TestGetLabelsInRepoByIDs(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	labels, err := GetLabelsInRepoByIDs(1, []int64{1, 2, db.NonexistentID})
 	assert.NoError(t, err)
 	if assert.Len(t, labels, 2) {
@@ -121,7 +122,7 @@ func TestGetLabelsInRepoByIDs(t *testing.T) {
 }
 
 func TestGetLabelsByRepoID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	testSuccess := func(repoID int64, sortType string, expectedIssueIDs []int64) {
 		labels, err := GetLabelsByRepoID(repoID, sortType, db.ListOptions{})
 		assert.NoError(t, err)
@@ -139,7 +140,7 @@ func TestGetLabelsByRepoID(t *testing.T) {
 // Org versions
 
 func TestGetLabelInOrgByName(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	label, err := GetLabelInOrgByName(3, "orglabel3")
 	assert.NoError(t, err)
 	assert.EqualValues(t, 3, label.ID)
@@ -159,7 +160,7 @@ func TestGetLabelInOrgByName(t *testing.T) {
 }
 
 func TestGetLabelInOrgByNames(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	labelIDs, err := GetLabelIDsInOrgByNames(3, []string{"orglabel3", "orglabel4"})
 	assert.NoError(t, err)
 
@@ -170,7 +171,7 @@ func TestGetLabelInOrgByNames(t *testing.T) {
 }
 
 func TestGetLabelInOrgByNamesDiscardsNonExistentLabels(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	// orglabel99 doesn't exists.. See labels.yml
 	labelIDs, err := GetLabelIDsInOrgByNames(3, []string{"orglabel3", "orglabel4", "orglabel99"})
 	assert.NoError(t, err)
@@ -183,7 +184,7 @@ func TestGetLabelInOrgByNamesDiscardsNonExistentLabels(t *testing.T) {
 }
 
 func TestGetLabelInOrgByID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	label, err := GetLabelInOrgByID(3, 3)
 	assert.NoError(t, err)
 	assert.EqualValues(t, 3, label.ID)
@@ -202,7 +203,7 @@ func TestGetLabelInOrgByID(t *testing.T) {
 }
 
 func TestGetLabelsInOrgByIDs(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	labels, err := GetLabelsInOrgByIDs(3, []int64{3, 4, db.NonexistentID})
 	assert.NoError(t, err)
 	if assert.Len(t, labels, 2) {
@@ -212,7 +213,7 @@ func TestGetLabelsInOrgByIDs(t *testing.T) {
 }
 
 func TestGetLabelsByOrgID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	testSuccess := func(orgID int64, sortType string, expectedIssueIDs []int64) {
 		labels, err := GetLabelsByOrgID(orgID, sortType, db.ListOptions{})
 		assert.NoError(t, err)
@@ -237,7 +238,7 @@ func TestGetLabelsByOrgID(t *testing.T) {
 //
 
 func TestGetLabelsByIssueID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	labels, err := GetLabelsByIssueID(1)
 	assert.NoError(t, err)
 	if assert.Len(t, labels, 1) {
@@ -250,7 +251,7 @@ func TestGetLabelsByIssueID(t *testing.T) {
 }
 
 func TestUpdateLabel(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	label := db.AssertExistsAndLoadBean(t, &Label{ID: 1}).(*Label)
 	// make sure update wont overwrite it
 	update := &Label{
@@ -271,7 +272,7 @@ func TestUpdateLabel(t *testing.T) {
 }
 
 func TestDeleteLabel(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	label := db.AssertExistsAndLoadBean(t, &Label{ID: 1}).(*Label)
 	assert.NoError(t, DeleteLabel(label.RepoID, label.ID))
 	db.AssertNotExistsBean(t, &Label{ID: label.ID, RepoID: label.RepoID})
@@ -284,14 +285,14 @@ func TestDeleteLabel(t *testing.T) {
 }
 
 func TestHasIssueLabel(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	assert.True(t, HasIssueLabel(1, 1))
 	assert.False(t, HasIssueLabel(1, 2))
 	assert.False(t, HasIssueLabel(db.NonexistentID, db.NonexistentID))
 }
 
 func TestNewIssueLabel(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	label := db.AssertExistsAndLoadBean(t, &Label{ID: 2}).(*Label)
 	issue := db.AssertExistsAndLoadBean(t, &Issue{ID: 1}).(*Issue)
 	doer := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
@@ -316,7 +317,7 @@ func TestNewIssueLabel(t *testing.T) {
 }
 
 func TestNewIssueLabels(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	label1 := db.AssertExistsAndLoadBean(t, &Label{ID: 1}).(*Label)
 	label2 := db.AssertExistsAndLoadBean(t, &Label{ID: 2}).(*Label)
 	issue := db.AssertExistsAndLoadBean(t, &Issue{ID: 5}).(*Issue)
@@ -346,7 +347,7 @@ func TestNewIssueLabels(t *testing.T) {
 }
 
 func TestDeleteIssueLabel(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	testSuccess := func(labelID, issueID, doerID int64) {
 		label := db.AssertExistsAndLoadBean(t, &Label{ID: labelID}).(*Label)
 		issue := db.AssertExistsAndLoadBean(t, &Issue{ID: issueID}).(*Issue)
diff --git a/models/issue_list_test.go b/models/issue_list_test.go
index dadca3844c..ea2f42e77b 100644
--- a/models/issue_list_test.go
+++ b/models/issue_list_test.go
@@ -8,13 +8,14 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/setting"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestIssueList_LoadRepositories(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	issueList := IssueList{
 		db.AssertExistsAndLoadBean(t, &Issue{ID: 1}).(*Issue),
@@ -31,7 +32,7 @@ func TestIssueList_LoadRepositories(t *testing.T) {
 }
 
 func TestIssueList_LoadAttributes(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	setting.Service.EnableTimetracking = true
 	issueList := IssueList{
 		db.AssertExistsAndLoadBean(t, &Issue{ID: 1}).(*Issue),
diff --git a/models/issue_milestone_test.go b/models/issue_milestone_test.go
index 099fe47c7c..8dee464066 100644
--- a/models/issue_milestone_test.go
+++ b/models/issue_milestone_test.go
@@ -9,6 +9,7 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/setting"
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/timeutil"
@@ -23,7 +24,7 @@ func TestMilestone_State(t *testing.T) {
 }
 
 func TestNewMilestone(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	milestone := &Milestone{
 		RepoID:  1,
 		Name:    "milestoneName",
@@ -36,7 +37,7 @@ func TestNewMilestone(t *testing.T) {
 }
 
 func TestGetMilestoneByRepoID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	milestone, err := GetMilestoneByRepoID(1, 1)
 	assert.NoError(t, err)
@@ -48,7 +49,7 @@ func TestGetMilestoneByRepoID(t *testing.T) {
 }
 
 func TestGetMilestonesByRepoID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	test := func(repoID int64, state api.StateType) {
 		repo := db.AssertExistsAndLoadBean(t, &Repository{ID: repoID}).(*Repository)
 		milestones, _, err := GetMilestones(GetMilestonesOption{
@@ -97,7 +98,7 @@ func TestGetMilestonesByRepoID(t *testing.T) {
 }
 
 func TestGetMilestones(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
 	test := func(sortType string, sortCond func(*Milestone) int) {
 		for _, page := range []int{0, 1} {
@@ -158,7 +159,7 @@ func TestGetMilestones(t *testing.T) {
 }
 
 func TestUpdateMilestone(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	milestone := db.AssertExistsAndLoadBean(t, &Milestone{ID: 1}).(*Milestone)
 	milestone.Name = " newMilestoneName  "
@@ -170,7 +171,7 @@ func TestUpdateMilestone(t *testing.T) {
 }
 
 func TestCountRepoMilestones(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	test := func(repoID int64) {
 		repo := db.AssertExistsAndLoadBean(t, &Repository{ID: repoID}).(*Repository)
 		count, err := countRepoMilestones(db.GetEngine(db.DefaultContext), repoID)
@@ -187,7 +188,7 @@ func TestCountRepoMilestones(t *testing.T) {
 }
 
 func TestCountRepoClosedMilestones(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	test := func(repoID int64) {
 		repo := db.AssertExistsAndLoadBean(t, &Repository{ID: repoID}).(*Repository)
 		count, err := CountRepoClosedMilestones(repoID)
@@ -204,7 +205,7 @@ func TestCountRepoClosedMilestones(t *testing.T) {
 }
 
 func TestChangeMilestoneStatus(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	milestone := db.AssertExistsAndLoadBean(t, &Milestone{ID: 1}).(*Milestone)
 
 	assert.NoError(t, ChangeMilestoneStatus(milestone, true))
@@ -217,7 +218,7 @@ func TestChangeMilestoneStatus(t *testing.T) {
 }
 
 func TestUpdateMilestoneCounters(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	issue := db.AssertExistsAndLoadBean(t, &Issue{MilestoneID: 1},
 		"is_closed=0").(*Issue)
 
@@ -237,7 +238,7 @@ func TestUpdateMilestoneCounters(t *testing.T) {
 }
 
 func TestChangeMilestoneAssign(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	issue := db.AssertExistsAndLoadBean(t, &Issue{RepoID: 1}).(*Issue)
 	doer := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	assert.NotNil(t, issue)
@@ -256,7 +257,7 @@ func TestChangeMilestoneAssign(t *testing.T) {
 }
 
 func TestDeleteMilestoneByRepoID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	assert.NoError(t, DeleteMilestoneByRepoID(1, 1))
 	db.AssertNotExistsBean(t, &Milestone{ID: 1})
 	CheckConsistencyFor(t, &Repository{ID: 1})
@@ -265,7 +266,7 @@ func TestDeleteMilestoneByRepoID(t *testing.T) {
 }
 
 func TestMilestoneList_LoadTotalTrackedTimes(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	miles := MilestoneList{
 		db.AssertExistsAndLoadBean(t, &Milestone{ID: 1}).(*Milestone),
 	}
@@ -276,7 +277,7 @@ func TestMilestoneList_LoadTotalTrackedTimes(t *testing.T) {
 }
 
 func TestCountMilestonesByRepoIDs(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	milestonesCount := func(repoID int64) (int, int) {
 		repo := db.AssertExistsAndLoadBean(t, &Repository{ID: repoID}).(*Repository)
 		return repo.NumOpenMilestones, repo.NumClosedMilestones
@@ -296,7 +297,7 @@ func TestCountMilestonesByRepoIDs(t *testing.T) {
 }
 
 func TestGetMilestonesByRepoIDs(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	repo1 := db.AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
 	repo2 := db.AssertExistsAndLoadBean(t, &Repository{ID: 2}).(*Repository)
 	test := func(sortType string, sortCond func(*Milestone) int) {
@@ -341,7 +342,7 @@ func TestGetMilestonesByRepoIDs(t *testing.T) {
 }
 
 func TestLoadTotalTrackedTime(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	milestone := db.AssertExistsAndLoadBean(t, &Milestone{ID: 1}).(*Milestone)
 
 	assert.NoError(t, milestone.LoadTotalTrackedTime())
@@ -350,7 +351,7 @@ func TestLoadTotalTrackedTime(t *testing.T) {
 }
 
 func TestGetMilestonesStats(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	test := func(repoID int64) {
 		repo := db.AssertExistsAndLoadBean(t, &Repository{ID: repoID}).(*Repository)
diff --git a/models/issue_reaction_test.go b/models/issue_reaction_test.go
index dd15b816c7..5c0441623b 100644
--- a/models/issue_reaction_test.go
+++ b/models/issue_reaction_test.go
@@ -7,6 +7,7 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/setting"
 
 	"github.com/stretchr/testify/assert"
@@ -25,7 +26,7 @@ func addReaction(t *testing.T, doer *User, issue *Issue, comment *Comment, conte
 }
 
 func TestIssueAddReaction(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user1 := db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
 
@@ -37,7 +38,7 @@ func TestIssueAddReaction(t *testing.T) {
 }
 
 func TestIssueAddDuplicateReaction(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user1 := db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
 
@@ -58,7 +59,7 @@ func TestIssueAddDuplicateReaction(t *testing.T) {
 }
 
 func TestIssueDeleteReaction(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user1 := db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
 
@@ -73,7 +74,7 @@ func TestIssueDeleteReaction(t *testing.T) {
 }
 
 func TestIssueReactionCount(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	setting.UI.ReactionMaxUserNum = 2
 
@@ -111,7 +112,7 @@ func TestIssueReactionCount(t *testing.T) {
 }
 
 func TestIssueCommentAddReaction(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user1 := db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
 
@@ -125,7 +126,7 @@ func TestIssueCommentAddReaction(t *testing.T) {
 }
 
 func TestIssueCommentDeleteReaction(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user1 := db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
 	user2 := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
@@ -152,7 +153,7 @@ func TestIssueCommentDeleteReaction(t *testing.T) {
 }
 
 func TestIssueCommentReactionCount(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user1 := db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
 
diff --git a/models/issue_stopwatch_test.go b/models/issue_stopwatch_test.go
index 11306efcf5..0de4dd0347 100644
--- a/models/issue_stopwatch_test.go
+++ b/models/issue_stopwatch_test.go
@@ -8,13 +8,14 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/timeutil"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestCancelStopwatch(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user1, err := GetUserByID(1)
 	assert.NoError(t, err)
@@ -34,14 +35,14 @@ func TestCancelStopwatch(t *testing.T) {
 }
 
 func TestStopwatchExists(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	assert.True(t, StopwatchExists(1, 1))
 	assert.False(t, StopwatchExists(1, 2))
 }
 
 func TestHasUserStopwatch(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	exists, sw, err := HasUserStopwatch(1)
 	assert.NoError(t, err)
@@ -54,7 +55,7 @@ func TestHasUserStopwatch(t *testing.T) {
 }
 
 func TestCreateOrStopIssueStopwatch(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user2, err := GetUserByID(2)
 	assert.NoError(t, err)
diff --git a/models/issue_test.go b/models/issue_test.go
index 9df91aeb99..296e12a5d4 100644
--- a/models/issue_test.go
+++ b/models/issue_test.go
@@ -12,11 +12,12 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestIssue_ReplaceLabels(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	testSuccess := func(issueID int64, labelIDs []int64) {
 		issue := db.AssertExistsAndLoadBean(t, &Issue{ID: issueID}).(*Issue)
@@ -40,7 +41,7 @@ func TestIssue_ReplaceLabels(t *testing.T) {
 }
 
 func Test_GetIssueIDsByRepoID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	ids, err := GetIssueIDsByRepoID(1)
 	assert.NoError(t, err)
@@ -48,7 +49,7 @@ func Test_GetIssueIDsByRepoID(t *testing.T) {
 }
 
 func TestIssueAPIURL(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	issue := db.AssertExistsAndLoadBean(t, &Issue{ID: 1}).(*Issue)
 	err := issue.LoadAttributes()
 
@@ -57,7 +58,7 @@ func TestIssueAPIURL(t *testing.T) {
 }
 
 func TestGetIssuesByIDs(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	testSuccess := func(expectedIssueIDs, nonExistentIssueIDs []int64) {
 		issues, err := GetIssuesByIDs(append(expectedIssueIDs, nonExistentIssueIDs...))
 		assert.NoError(t, err)
@@ -72,7 +73,7 @@ func TestGetIssuesByIDs(t *testing.T) {
 }
 
 func TestGetParticipantIDsByIssue(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	checkParticipants := func(issueID int64, userIDs []int) {
 		issue, err := GetIssueByID(issueID)
@@ -106,7 +107,7 @@ func TestIssue_ClearLabels(t *testing.T) {
 		{3, 2}, // pull-request, has no labels
 	}
 	for _, test := range tests {
-		assert.NoError(t, db.PrepareTestDatabase())
+		assert.NoError(t, unittest.PrepareTestDatabase())
 		issue := db.AssertExistsAndLoadBean(t, &Issue{ID: test.issueID}).(*Issue)
 		doer := db.AssertExistsAndLoadBean(t, &User{ID: test.doerID}).(*User)
 		assert.NoError(t, issue.ClearLabels(doer))
@@ -115,7 +116,7 @@ func TestIssue_ClearLabels(t *testing.T) {
 }
 
 func TestUpdateIssueCols(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	issue := db.AssertExistsAndLoadBean(t, &Issue{}).(*Issue)
 
 	const newTitle = "New Title for unit test"
@@ -135,7 +136,7 @@ func TestUpdateIssueCols(t *testing.T) {
 }
 
 func TestIssues(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	for _, test := range []struct {
 		Opts             IssuesOptions
 		ExpectedIssueIDs []int64
@@ -190,7 +191,7 @@ func TestIssues(t *testing.T) {
 }
 
 func TestGetUserIssueStats(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	for _, test := range []struct {
 		Opts               UserIssueStatsOptions
 		ExpectedIssueStats IssueStats
@@ -287,7 +288,7 @@ func TestGetUserIssueStats(t *testing.T) {
 }
 
 func TestIssue_loadTotalTimes(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	ms, err := GetIssueByID(2)
 	assert.NoError(t, err)
 	assert.NoError(t, ms.loadTotalTimes(db.GetEngine(db.DefaultContext)))
@@ -295,7 +296,7 @@ func TestIssue_loadTotalTimes(t *testing.T) {
 }
 
 func TestIssue_SearchIssueIDsByKeyword(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	total, ids, err := SearchIssueIDsByKeyword("issue2", []int64{1}, 10, 0)
 	assert.NoError(t, err)
 	assert.EqualValues(t, 1, total)
@@ -319,7 +320,7 @@ func TestIssue_SearchIssueIDsByKeyword(t *testing.T) {
 }
 
 func TestGetRepoIDsForIssuesOptions(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	for _, test := range []struct {
 		Opts            IssuesOptions
@@ -377,7 +378,7 @@ func testInsertIssue(t *testing.T, title, content string, expectIndex int64) *Is
 }
 
 func TestIssue_InsertIssue(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// there are 5 issues and max index is 5 on repository 1, so this one should 6
 	issue := testInsertIssue(t, "my issue1", "special issue's comments?", 6)
@@ -391,7 +392,7 @@ func TestIssue_InsertIssue(t *testing.T) {
 }
 
 func TestIssue_ResolveMentions(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	testSuccess := func(owner, repo, doer string, mentions []string, expected []int64) {
 		o := db.AssertExistsAndLoadBean(t, &User{LowerName: owner}).(*User)
@@ -423,7 +424,7 @@ func TestIssue_ResolveMentions(t *testing.T) {
 }
 
 func TestResourceIndex(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	var wg sync.WaitGroup
 	for i := 0; i < 100; i++ {
@@ -437,7 +438,7 @@ func TestResourceIndex(t *testing.T) {
 }
 
 func TestCorrectIssueStats(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// Because the condition is to have chunked database look-ups,
 	// We have to more issues than `maxQueryParameters`, we will insert.
diff --git a/models/issue_tracked_time_test.go b/models/issue_tracked_time_test.go
index 7643360727..2770065363 100644
--- a/models/issue_tracked_time_test.go
+++ b/models/issue_tracked_time_test.go
@@ -9,11 +9,12 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestAddTime(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user3, err := GetUserByID(3)
 	assert.NoError(t, err)
@@ -36,7 +37,7 @@ func TestAddTime(t *testing.T) {
 }
 
 func TestGetTrackedTimes(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// by Issue
 	times, err := GetTrackedTimes(&FindTrackedTimesOptions{IssueID: 1})
@@ -77,7 +78,7 @@ func TestGetTrackedTimes(t *testing.T) {
 }
 
 func TestTotalTimes(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	total, err := TotalTimes(&FindTrackedTimesOptions{IssueID: 1})
 	assert.NoError(t, err)
diff --git a/models/issue_user_test.go b/models/issue_user_test.go
index d4e504719f..1a9ae6395b 100644
--- a/models/issue_user_test.go
+++ b/models/issue_user_test.go
@@ -8,11 +8,12 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func Test_newIssueUsers(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
 	newIssue := &Issue{
@@ -34,7 +35,7 @@ func Test_newIssueUsers(t *testing.T) {
 }
 
 func TestUpdateIssueUserByRead(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	issue := db.AssertExistsAndLoadBean(t, &Issue{ID: 1}).(*Issue)
 
 	assert.NoError(t, UpdateIssueUserByRead(4, issue.ID))
@@ -47,7 +48,7 @@ func TestUpdateIssueUserByRead(t *testing.T) {
 }
 
 func TestUpdateIssueUsersByMentions(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	issue := db.AssertExistsAndLoadBean(t, &Issue{ID: 1}).(*Issue)
 
 	uids := []int64{2, 5}
diff --git a/models/issue_watch_test.go b/models/issue_watch_test.go
index 139ed41cb6..9aaa184a34 100644
--- a/models/issue_watch_test.go
+++ b/models/issue_watch_test.go
@@ -8,11 +8,12 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestCreateOrUpdateIssueWatch(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	assert.NoError(t, CreateOrUpdateIssueWatch(3, 1, true))
 	iw := db.AssertExistsAndLoadBean(t, &IssueWatch{UserID: 3, IssueID: 1}).(*IssueWatch)
@@ -24,7 +25,7 @@ func TestCreateOrUpdateIssueWatch(t *testing.T) {
 }
 
 func TestGetIssueWatch(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	_, exists, err := GetIssueWatch(9, 1)
 	assert.True(t, exists)
@@ -41,7 +42,7 @@ func TestGetIssueWatch(t *testing.T) {
 }
 
 func TestGetIssueWatchers(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	iws, err := GetIssueWatchers(1, db.ListOptions{})
 	assert.NoError(t, err)
diff --git a/models/issue_xref_test.go b/models/issue_xref_test.go
index bf498e4710..a1f4515b60 100644
--- a/models/issue_xref_test.go
+++ b/models/issue_xref_test.go
@@ -9,13 +9,14 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/references"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestXRef_AddCrossReferences(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// Issue #1 to test against
 	itarget := testCreateIssue(t, 1, 2, "title1", "content1", false)
@@ -66,7 +67,7 @@ func TestXRef_AddCrossReferences(t *testing.T) {
 }
 
 func TestXRef_NeuterCrossReferences(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// Issue #1 to test against
 	itarget := testCreateIssue(t, 1, 2, "title1", "content1", false)
@@ -88,7 +89,7 @@ func TestXRef_NeuterCrossReferences(t *testing.T) {
 }
 
 func TestXRef_ResolveCrossReferences(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	d := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 
diff --git a/models/issues/content_history_test.go b/models/issues/content_history_test.go
index dadeb484b1..f040a7dc57 100644
--- a/models/issues/content_history_test.go
+++ b/models/issues/content_history_test.go
@@ -8,13 +8,14 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/timeutil"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestContentHistory(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	dbCtx := db.DefaultContext
 	dbEngine := db.GetEngine(dbCtx)
diff --git a/models/issues/main_test.go b/models/issues/main_test.go
index 61a15c53b7..af71f038d6 100644
--- a/models/issues/main_test.go
+++ b/models/issues/main_test.go
@@ -8,9 +8,9 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."), "")
+	unittest.MainTest(m, filepath.Join("..", ".."), "")
 }
diff --git a/models/login/main_test.go b/models/login/main_test.go
index 141952a594..0666eeaad0 100644
--- a/models/login/main_test.go
+++ b/models/login/main_test.go
@@ -8,11 +8,11 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."),
+	unittest.MainTest(m, filepath.Join("..", ".."),
 		"login_source.yml",
 		"oauth2_application.yml",
 		"oauth2_authorization_code.yml",
diff --git a/models/login/oauth2_application_test.go b/models/login/oauth2_application_test.go
index cb064cef1b..876de5b52a 100644
--- a/models/login/oauth2_application_test.go
+++ b/models/login/oauth2_application_test.go
@@ -8,6 +8,7 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 
 	"github.com/stretchr/testify/assert"
 )
@@ -15,7 +16,7 @@ import (
 //////////////////// Application
 
 func TestOAuth2Application_GenerateClientSecret(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	app := db.AssertExistsAndLoadBean(t, &OAuth2Application{ID: 1}).(*OAuth2Application)
 	secret, err := app.GenerateClientSecret()
 	assert.NoError(t, err)
@@ -24,7 +25,7 @@ func TestOAuth2Application_GenerateClientSecret(t *testing.T) {
 }
 
 func BenchmarkOAuth2Application_GenerateClientSecret(b *testing.B) {
-	assert.NoError(b, db.PrepareTestDatabase())
+	assert.NoError(b, unittest.PrepareTestDatabase())
 	app := db.AssertExistsAndLoadBean(b, &OAuth2Application{ID: 1}).(*OAuth2Application)
 	for i := 0; i < b.N; i++ {
 		_, _ = app.GenerateClientSecret()
@@ -42,7 +43,7 @@ func TestOAuth2Application_ContainsRedirectURI(t *testing.T) {
 }
 
 func TestOAuth2Application_ValidateClientSecret(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	app := db.AssertExistsAndLoadBean(t, &OAuth2Application{ID: 1}).(*OAuth2Application)
 	secret, err := app.GenerateClientSecret()
 	assert.NoError(t, err)
@@ -51,7 +52,7 @@ func TestOAuth2Application_ValidateClientSecret(t *testing.T) {
 }
 
 func TestGetOAuth2ApplicationByClientID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	app, err := GetOAuth2ApplicationByClientID("da7da3ba-9a13-4167-856f-3899de0b0138")
 	assert.NoError(t, err)
 	assert.Equal(t, "da7da3ba-9a13-4167-856f-3899de0b0138", app.ClientID)
@@ -62,7 +63,7 @@ func TestGetOAuth2ApplicationByClientID(t *testing.T) {
 }
 
 func TestCreateOAuth2Application(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	app, err := CreateOAuth2Application(CreateOAuth2ApplicationOptions{Name: "newapp", UserID: 1})
 	assert.NoError(t, err)
 	assert.Equal(t, "newapp", app.Name)
@@ -75,7 +76,7 @@ func TestOAuth2Application_TableName(t *testing.T) {
 }
 
 func TestOAuth2Application_GetGrantByUserID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	app := db.AssertExistsAndLoadBean(t, &OAuth2Application{ID: 1}).(*OAuth2Application)
 	grant, err := app.GetGrantByUserID(1)
 	assert.NoError(t, err)
@@ -87,7 +88,7 @@ func TestOAuth2Application_GetGrantByUserID(t *testing.T) {
 }
 
 func TestOAuth2Application_CreateGrant(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	app := db.AssertExistsAndLoadBean(t, &OAuth2Application{ID: 1}).(*OAuth2Application)
 	grant, err := app.CreateGrant(2, "")
 	assert.NoError(t, err)
@@ -100,7 +101,7 @@ func TestOAuth2Application_CreateGrant(t *testing.T) {
 //////////////////// Grant
 
 func TestGetOAuth2GrantByID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	grant, err := GetOAuth2GrantByID(1)
 	assert.NoError(t, err)
 	assert.Equal(t, int64(1), grant.ID)
@@ -111,7 +112,7 @@ func TestGetOAuth2GrantByID(t *testing.T) {
 }
 
 func TestOAuth2Grant_IncreaseCounter(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	grant := db.AssertExistsAndLoadBean(t, &OAuth2Grant{ID: 1, Counter: 1}).(*OAuth2Grant)
 	assert.NoError(t, grant.IncreaseCounter())
 	assert.Equal(t, int64(2), grant.Counter)
@@ -119,7 +120,7 @@ func TestOAuth2Grant_IncreaseCounter(t *testing.T) {
 }
 
 func TestOAuth2Grant_ScopeContains(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	grant := db.AssertExistsAndLoadBean(t, &OAuth2Grant{ID: 1, Scope: "openid profile"}).(*OAuth2Grant)
 	assert.True(t, grant.ScopeContains("openid"))
 	assert.True(t, grant.ScopeContains("profile"))
@@ -128,7 +129,7 @@ func TestOAuth2Grant_ScopeContains(t *testing.T) {
 }
 
 func TestOAuth2Grant_GenerateNewAuthorizationCode(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	grant := db.AssertExistsAndLoadBean(t, &OAuth2Grant{ID: 1}).(*OAuth2Grant)
 	code, err := grant.GenerateNewAuthorizationCode("https://example2.com/callback", "CjvyTLSdR47G5zYenDA-eDWW4lRrO8yvjcWwbD_deOg", "S256")
 	assert.NoError(t, err)
@@ -141,7 +142,7 @@ func TestOAuth2Grant_TableName(t *testing.T) {
 }
 
 func TestGetOAuth2GrantsByUserID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	result, err := GetOAuth2GrantsByUserID(1)
 	assert.NoError(t, err)
 	assert.Len(t, result, 1)
@@ -154,7 +155,7 @@ func TestGetOAuth2GrantsByUserID(t *testing.T) {
 }
 
 func TestRevokeOAuth2Grant(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	assert.NoError(t, RevokeOAuth2Grant(1, 1))
 	db.AssertNotExistsBean(t, &OAuth2Grant{ID: 1, UserID: 1})
 }
@@ -162,7 +163,7 @@ func TestRevokeOAuth2Grant(t *testing.T) {
 //////////////////// Authorization Code
 
 func TestGetOAuth2AuthorizationByCode(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	code, err := GetOAuth2AuthorizationByCode("authcode")
 	assert.NoError(t, err)
 	assert.NotNil(t, code)
@@ -222,7 +223,7 @@ func TestOAuth2AuthorizationCode_GenerateRedirectURI(t *testing.T) {
 }
 
 func TestOAuth2AuthorizationCode_Invalidate(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	code := db.AssertExistsAndLoadBean(t, &OAuth2AuthorizationCode{Code: "authcode"}).(*OAuth2AuthorizationCode)
 	assert.NoError(t, code.Invalidate())
 	db.AssertNotExistsBean(t, &OAuth2AuthorizationCode{Code: "authcode"})
diff --git a/models/login/source_test.go b/models/login/source_test.go
index d98609037c..e7ef7c7048 100644
--- a/models/login/source_test.go
+++ b/models/login/source_test.go
@@ -9,6 +9,7 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/json"
 
 	"github.com/stretchr/testify/assert"
@@ -34,7 +35,7 @@ func (source *TestSource) ToDB() ([]byte, error) {
 }
 
 func TestDumpLoginSource(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	loginSourceSchema, err := db.TableInfo(new(Source))
 	assert.NoError(t, err)
diff --git a/models/login/u2f_test.go b/models/login/u2f_test.go
index 8f5cea6150..11f20bc790 100644
--- a/models/login/u2f_test.go
+++ b/models/login/u2f_test.go
@@ -9,13 +9,14 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/tstranex/u2f"
 )
 
 func TestGetU2FRegistrationByID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	res, err := GetU2FRegistrationByID(1)
 	assert.NoError(t, err)
@@ -27,7 +28,7 @@ func TestGetU2FRegistrationByID(t *testing.T) {
 }
 
 func TestGetU2FRegistrationsByUID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	res, err := GetU2FRegistrationsByUID(32)
 
@@ -41,7 +42,7 @@ func TestU2FRegistration_TableName(t *testing.T) {
 }
 
 func TestU2FRegistration_UpdateCounter(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	reg := db.AssertExistsAndLoadBean(t, &U2FRegistration{ID: 1}).(*U2FRegistration)
 	reg.Counter = 1
 	assert.NoError(t, reg.UpdateCounter())
@@ -49,7 +50,7 @@ func TestU2FRegistration_UpdateCounter(t *testing.T) {
 }
 
 func TestU2FRegistration_UpdateLargeCounter(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	reg := db.AssertExistsAndLoadBean(t, &U2FRegistration{ID: 1}).(*U2FRegistration)
 	reg.Counter = 0xffffffff
 	assert.NoError(t, reg.UpdateCounter())
@@ -57,7 +58,7 @@ func TestU2FRegistration_UpdateLargeCounter(t *testing.T) {
 }
 
 func TestCreateRegistration(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	res, err := CreateRegistration(1, "U2F Created Key", &u2f.Registration{Raw: []byte("Test")})
 	assert.NoError(t, err)
@@ -68,7 +69,7 @@ func TestCreateRegistration(t *testing.T) {
 }
 
 func TestDeleteRegistration(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	reg := db.AssertExistsAndLoadBean(t, &U2FRegistration{ID: 1}).(*U2FRegistration)
 
 	assert.NoError(t, DeleteRegistration(reg))
diff --git a/models/main_test.go b/models/main_test.go
index ad9276330f..15bece7bf4 100644
--- a/models/main_test.go
+++ b/models/main_test.go
@@ -7,17 +7,25 @@ package models
 import (
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 
 	"github.com/stretchr/testify/assert"
 )
 
 // TestFixturesAreConsistent assert that test fixtures are consistent
 func TestFixturesAreConsistent(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
-	CheckConsistencyForAll(t)
+	assert.NoError(t, unittest.PrepareTestDatabase())
+	CheckConsistencyFor(t,
+		&User{},
+		&Repository{},
+		&Issue{},
+		&PullRequest{},
+		&Milestone{},
+		&Label{},
+		&Team{},
+		&Action{})
 }
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, "..")
+	unittest.MainTest(m, "..")
 }
diff --git a/models/migrations/migrations_test.go b/models/migrations/migrations_test.go
index 46c8c66a24..f46070cf8e 100644
--- a/models/migrations/migrations_test.go
+++ b/models/migrations/migrations_test.go
@@ -15,6 +15,7 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/setting"
@@ -241,14 +242,14 @@ func prepareTestEnv(t *testing.T, skip int, syncModels ...interface{}) (*xorm.En
 
 	if _, err := os.Stat(fixturesDir); err == nil {
 		t.Logf("initializing fixtures from: %s", fixturesDir)
-		if err := db.InitFixtures(
-			db.FixturesOptions{
+		if err := unittest.InitFixtures(
+			unittest.FixturesOptions{
 				Dir: fixturesDir,
 			}, x); err != nil {
 			t.Errorf("error whilst initializing fixtures from %s: %v", fixturesDir, err)
 			return x, deferFn
 		}
-		if err := db.LoadFixtures(x); err != nil {
+		if err := unittest.LoadFixtures(x); err != nil {
 			t.Errorf("error whilst loading fixtures from %s: %v", fixturesDir, err)
 			return x, deferFn
 		}
diff --git a/models/notification_test.go b/models/notification_test.go
index 588882bed3..cdba409f3d 100644
--- a/models/notification_test.go
+++ b/models/notification_test.go
@@ -8,11 +8,12 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestCreateOrUpdateIssueNotifications(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	issue := db.AssertExistsAndLoadBean(t, &Issue{ID: 1}).(*Issue)
 
 	assert.NoError(t, CreateOrUpdateIssueNotifications(issue.ID, 0, 2, 0))
@@ -27,7 +28,7 @@ func TestCreateOrUpdateIssueNotifications(t *testing.T) {
 }
 
 func TestNotificationsForUser(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	statuses := []NotificationStatus{NotificationStatusRead, NotificationStatusUnread}
 	notfs, err := NotificationsForUser(user, statuses, 1, 10)
@@ -43,7 +44,7 @@ func TestNotificationsForUser(t *testing.T) {
 }
 
 func TestNotification_GetRepo(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	notf := db.AssertExistsAndLoadBean(t, &Notification{RepoID: 1}).(*Notification)
 	repo, err := notf.GetRepo()
 	assert.NoError(t, err)
@@ -52,7 +53,7 @@ func TestNotification_GetRepo(t *testing.T) {
 }
 
 func TestNotification_GetIssue(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	notf := db.AssertExistsAndLoadBean(t, &Notification{RepoID: 1}).(*Notification)
 	issue, err := notf.GetIssue()
 	assert.NoError(t, err)
@@ -61,7 +62,7 @@ func TestNotification_GetIssue(t *testing.T) {
 }
 
 func TestGetNotificationCount(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
 	cnt, err := GetNotificationCount(user, NotificationStatusRead)
 	assert.NoError(t, err)
@@ -73,7 +74,7 @@ func TestGetNotificationCount(t *testing.T) {
 }
 
 func TestSetNotificationStatus(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	notf := db.AssertExistsAndLoadBean(t,
 		&Notification{UserID: user.ID, Status: NotificationStatusRead}).(*Notification)
@@ -89,7 +90,7 @@ func TestSetNotificationStatus(t *testing.T) {
 }
 
 func TestUpdateNotificationStatuses(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	notfUnread := db.AssertExistsAndLoadBean(t,
 		&Notification{UserID: user.ID, Status: NotificationStatusUnread}).(*Notification)
diff --git a/models/org_team_test.go b/models/org_team_test.go
index f1c8f88879..114c8016e8 100644
--- a/models/org_team_test.go
+++ b/models/org_team_test.go
@@ -9,11 +9,12 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestTeam_IsOwnerTeam(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	team := db.AssertExistsAndLoadBean(t, &Team{ID: 1}).(*Team)
 	assert.True(t, team.IsOwnerTeam())
@@ -23,7 +24,7 @@ func TestTeam_IsOwnerTeam(t *testing.T) {
 }
 
 func TestTeam_IsMember(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	team := db.AssertExistsAndLoadBean(t, &Team{ID: 1}).(*Team)
 	assert.True(t, team.IsMember(2))
@@ -37,7 +38,7 @@ func TestTeam_IsMember(t *testing.T) {
 }
 
 func TestTeam_GetRepositories(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	test := func(teamID int64) {
 		team := db.AssertExistsAndLoadBean(t, &Team{ID: teamID}).(*Team)
@@ -52,7 +53,7 @@ func TestTeam_GetRepositories(t *testing.T) {
 }
 
 func TestTeam_GetMembers(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	test := func(teamID int64) {
 		team := db.AssertExistsAndLoadBean(t, &Team{ID: teamID}).(*Team)
@@ -67,7 +68,7 @@ func TestTeam_GetMembers(t *testing.T) {
 }
 
 func TestTeam_AddMember(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	test := func(teamID, userID int64) {
 		team := db.AssertExistsAndLoadBean(t, &Team{ID: teamID}).(*Team)
@@ -81,7 +82,7 @@ func TestTeam_AddMember(t *testing.T) {
 }
 
 func TestTeam_RemoveMember(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	testSuccess := func(teamID, userID int64) {
 		team := db.AssertExistsAndLoadBean(t, &Team{ID: teamID}).(*Team)
@@ -100,7 +101,7 @@ func TestTeam_RemoveMember(t *testing.T) {
 }
 
 func TestTeam_HasRepository(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	test := func(teamID, repoID int64, expected bool) {
 		team := db.AssertExistsAndLoadBean(t, &Team{ID: teamID}).(*Team)
@@ -116,7 +117,7 @@ func TestTeam_HasRepository(t *testing.T) {
 }
 
 func TestTeam_AddRepository(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	testSuccess := func(teamID, repoID int64) {
 		team := db.AssertExistsAndLoadBean(t, &Team{ID: teamID}).(*Team)
@@ -135,7 +136,7 @@ func TestTeam_AddRepository(t *testing.T) {
 }
 
 func TestTeam_RemoveRepository(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	testSuccess := func(teamID, repoID int64) {
 		team := db.AssertExistsAndLoadBean(t, &Team{ID: teamID}).(*Team)
@@ -154,7 +155,7 @@ func TestIsUsableTeamName(t *testing.T) {
 }
 
 func TestNewTeam(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	const teamName = "newTeamName"
 	team := &Team{Name: teamName, OrgID: 3}
@@ -164,7 +165,7 @@ func TestNewTeam(t *testing.T) {
 }
 
 func TestGetTeam(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	testSuccess := func(orgID int64, name string) {
 		team, err := GetTeam(orgID, name)
@@ -182,7 +183,7 @@ func TestGetTeam(t *testing.T) {
 }
 
 func TestGetTeamByID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	testSuccess := func(teamID int64) {
 		team, err := GetTeamByID(teamID)
@@ -200,7 +201,7 @@ func TestGetTeamByID(t *testing.T) {
 
 func TestUpdateTeam(t *testing.T) {
 	// successful update
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	team := db.AssertExistsAndLoadBean(t, &Team{ID: 2}).(*Team)
 	team.LowerName = "newname"
@@ -220,7 +221,7 @@ func TestUpdateTeam(t *testing.T) {
 
 func TestUpdateTeam2(t *testing.T) {
 	// update to already-existing team
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	team := db.AssertExistsAndLoadBean(t, &Team{ID: 2}).(*Team)
 	team.LowerName = "owners"
@@ -233,7 +234,7 @@ func TestUpdateTeam2(t *testing.T) {
 }
 
 func TestDeleteTeam(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	team := db.AssertExistsAndLoadBean(t, &Team{ID: 2}).(*Team)
 	assert.NoError(t, DeleteTeam(team))
@@ -250,7 +251,7 @@ func TestDeleteTeam(t *testing.T) {
 }
 
 func TestIsTeamMember(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	test := func(orgID, teamID, userID int64, expected bool) {
 		isMember, err := IsTeamMember(orgID, teamID, userID)
 		assert.NoError(t, err)
@@ -269,7 +270,7 @@ func TestIsTeamMember(t *testing.T) {
 }
 
 func TestGetTeamMembers(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	test := func(teamID int64) {
 		team := db.AssertExistsAndLoadBean(t, &Team{ID: teamID}).(*Team)
@@ -285,7 +286,7 @@ func TestGetTeamMembers(t *testing.T) {
 }
 
 func TestGetUserTeams(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	test := func(userID int64) {
 		teams, _, err := SearchTeam(&SearchTeamOptions{UserID: userID})
 		assert.NoError(t, err)
@@ -299,7 +300,7 @@ func TestGetUserTeams(t *testing.T) {
 }
 
 func TestGetUserOrgTeams(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	test := func(orgID, userID int64) {
 		teams, err := GetUserOrgTeams(orgID, userID)
 		assert.NoError(t, err)
@@ -314,7 +315,7 @@ func TestGetUserOrgTeams(t *testing.T) {
 }
 
 func TestAddTeamMember(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	test := func(teamID, userID int64) {
 		team := db.AssertExistsAndLoadBean(t, &Team{ID: teamID}).(*Team)
@@ -328,7 +329,7 @@ func TestAddTeamMember(t *testing.T) {
 }
 
 func TestRemoveTeamMember(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	testSuccess := func(teamID, userID int64) {
 		team := db.AssertExistsAndLoadBean(t, &Team{ID: teamID}).(*Team)
@@ -347,7 +348,7 @@ func TestRemoveTeamMember(t *testing.T) {
 }
 
 func TestHasTeamRepo(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	test := func(teamID, repoID int64, expected bool) {
 		team := db.AssertExistsAndLoadBean(t, &Team{ID: teamID}).(*Team)
@@ -363,7 +364,7 @@ func TestHasTeamRepo(t *testing.T) {
 }
 
 func TestUsersInTeamsCount(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	test := func(teamIDs, userIDs []int64, expected int64) {
 		count, err := UsersInTeamsCount(teamIDs, userIDs)
diff --git a/models/org_test.go b/models/org_test.go
index 2df89b2afc..9557e14edc 100644
--- a/models/org_test.go
+++ b/models/org_test.go
@@ -8,6 +8,7 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/structs"
 
@@ -15,7 +16,7 @@ import (
 )
 
 func TestUser_IsOwnedBy(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	for _, testCase := range []struct {
 		OrgID         int64
 		UserID        int64
@@ -36,7 +37,7 @@ func TestUser_IsOwnedBy(t *testing.T) {
 }
 
 func TestUser_IsOrgMember(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	for _, testCase := range []struct {
 		OrgID          int64
 		UserID         int64
@@ -57,7 +58,7 @@ func TestUser_IsOrgMember(t *testing.T) {
 }
 
 func TestUser_GetTeam(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	org := db.AssertExistsAndLoadBean(t, &User{ID: 3}).(*User)
 	team, err := org.GetTeam("team1")
 	assert.NoError(t, err)
@@ -73,7 +74,7 @@ func TestUser_GetTeam(t *testing.T) {
 }
 
 func TestUser_GetOwnerTeam(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	org := db.AssertExistsAndLoadBean(t, &User{ID: 3}).(*User)
 	team, err := org.GetOwnerTeam()
 	assert.NoError(t, err)
@@ -85,7 +86,7 @@ func TestUser_GetOwnerTeam(t *testing.T) {
 }
 
 func TestUser_GetTeams(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	org := db.AssertExistsAndLoadBean(t, &User{ID: 3}).(*User)
 	assert.NoError(t, org.LoadTeams())
 	if assert.Len(t, org.Teams, 4) {
@@ -97,7 +98,7 @@ func TestUser_GetTeams(t *testing.T) {
 }
 
 func TestUser_GetMembers(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	org := db.AssertExistsAndLoadBean(t, &User{ID: 3}).(*User)
 	assert.NoError(t, org.GetMembers())
 	if assert.Len(t, org.Members, 3) {
@@ -108,7 +109,7 @@ func TestUser_GetMembers(t *testing.T) {
 }
 
 func TestUser_AddMember(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	org := db.AssertExistsAndLoadBean(t, &User{ID: 3}).(*User)
 
 	// add a user that is not a member
@@ -131,7 +132,7 @@ func TestUser_AddMember(t *testing.T) {
 }
 
 func TestUser_RemoveMember(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	org := db.AssertExistsAndLoadBean(t, &User{ID: 3}).(*User)
 
 	// remove a user that is a member
@@ -154,7 +155,7 @@ func TestUser_RemoveMember(t *testing.T) {
 }
 
 func TestUser_RemoveOrgRepo(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	org := db.AssertExistsAndLoadBean(t, &User{ID: 3}).(*User)
 	repo := db.AssertExistsAndLoadBean(t, &Repository{OwnerID: org.ID}).(*Repository)
 
@@ -178,7 +179,7 @@ func TestUser_RemoveOrgRepo(t *testing.T) {
 
 func TestCreateOrganization(t *testing.T) {
 	// successful creation of org
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	owner := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	const newOrgName = "neworg"
@@ -198,7 +199,7 @@ func TestCreateOrganization(t *testing.T) {
 
 func TestCreateOrganization2(t *testing.T) {
 	// unauthorized creation of org
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	owner := db.AssertExistsAndLoadBean(t, &User{ID: 5}).(*User)
 	const newOrgName = "neworg"
@@ -216,7 +217,7 @@ func TestCreateOrganization2(t *testing.T) {
 
 func TestCreateOrganization3(t *testing.T) {
 	// create org with same name as existent org
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	owner := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	org := &User{Name: "user3"}                          // should already exist
@@ -229,7 +230,7 @@ func TestCreateOrganization3(t *testing.T) {
 
 func TestCreateOrganization4(t *testing.T) {
 	// create org with unusable name
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	owner := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	err := CreateOrganization(&User{Name: "assets"}, owner)
@@ -239,7 +240,7 @@ func TestCreateOrganization4(t *testing.T) {
 }
 
 func TestGetOrgByName(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	org, err := GetOrgByName("user3")
 	assert.NoError(t, err)
@@ -254,14 +255,14 @@ func TestGetOrgByName(t *testing.T) {
 }
 
 func TestCountOrganizations(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	expected, err := db.GetEngine(db.DefaultContext).Where("type=?", UserTypeOrganization).Count(&User{})
 	assert.NoError(t, err)
 	assert.Equal(t, expected, CountOrganizations())
 }
 
 func TestDeleteOrganization(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	org := db.AssertExistsAndLoadBean(t, &User{ID: 6}).(*User)
 	assert.NoError(t, DeleteOrganization(org))
 	db.AssertNotExistsBean(t, &User{ID: 6})
@@ -279,7 +280,7 @@ func TestDeleteOrganization(t *testing.T) {
 }
 
 func TestIsOrganizationOwner(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	test := func(orgID, userID int64, expected bool) {
 		isOwner, err := IsOrganizationOwner(orgID, userID)
 		assert.NoError(t, err)
@@ -293,7 +294,7 @@ func TestIsOrganizationOwner(t *testing.T) {
 }
 
 func TestIsOrganizationMember(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	test := func(orgID, userID int64, expected bool) {
 		isMember, err := IsOrganizationMember(orgID, userID)
 		assert.NoError(t, err)
@@ -308,7 +309,7 @@ func TestIsOrganizationMember(t *testing.T) {
 }
 
 func TestIsPublicMembership(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	test := func(orgID, userID int64, expected bool) {
 		isMember, err := IsPublicMembership(orgID, userID)
 		assert.NoError(t, err)
@@ -323,7 +324,7 @@ func TestIsPublicMembership(t *testing.T) {
 }
 
 func TestGetOrgsByUserID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	orgs, err := GetOrgsByUserID(4, true)
 	assert.NoError(t, err)
@@ -337,7 +338,7 @@ func TestGetOrgsByUserID(t *testing.T) {
 }
 
 func TestGetOwnedOrgsByUserID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	orgs, err := GetOwnedOrgsByUserID(2)
 	assert.NoError(t, err)
@@ -351,7 +352,7 @@ func TestGetOwnedOrgsByUserID(t *testing.T) {
 }
 
 func TestGetOwnedOrgsByUserIDDesc(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	orgs, err := GetOwnedOrgsByUserIDDesc(5, "id")
 	assert.NoError(t, err)
@@ -366,7 +367,7 @@ func TestGetOwnedOrgsByUserIDDesc(t *testing.T) {
 }
 
 func TestGetOrgUsersByUserID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	orgUsers, err := GetOrgUsersByUserID(5, &SearchOrganizationsOptions{All: true})
 	assert.NoError(t, err)
@@ -396,7 +397,7 @@ func TestGetOrgUsersByUserID(t *testing.T) {
 }
 
 func TestGetOrgUsersByOrgID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	orgUsers, err := GetOrgUsersByOrgID(&FindOrgMembersOpts{
 		ListOptions: db.ListOptions{},
@@ -429,7 +430,7 @@ func TestGetOrgUsersByOrgID(t *testing.T) {
 }
 
 func TestChangeOrgUserStatus(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	testSuccess := func(orgID, userID int64, public bool) {
 		assert.NoError(t, ChangeOrgUserStatus(orgID, userID, public))
@@ -444,7 +445,7 @@ func TestChangeOrgUserStatus(t *testing.T) {
 }
 
 func TestAddOrgUser(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	testSuccess := func(orgID, userID int64, isPublic bool) {
 		org := db.AssertExistsAndLoadBean(t, &User{ID: orgID}).(*User)
 		expectedNumMembers := org.NumMembers
@@ -471,7 +472,7 @@ func TestAddOrgUser(t *testing.T) {
 }
 
 func TestRemoveOrgUser(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	testSuccess := func(orgID, userID int64) {
 		org := db.AssertExistsAndLoadBean(t, &User{ID: orgID}).(*User)
 		expectedNumMembers := org.NumMembers
@@ -494,7 +495,7 @@ func TestRemoveOrgUser(t *testing.T) {
 }
 
 func TestUser_GetUserTeamIDs(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	org := db.AssertExistsAndLoadBean(t, &User{ID: 3}).(*User)
 	testSuccess := func(userID int64, expected []int64) {
 		teamIDs, err := org.GetUserTeamIDs(userID)
@@ -507,7 +508,7 @@ func TestUser_GetUserTeamIDs(t *testing.T) {
 }
 
 func TestAccessibleReposEnv_CountRepos(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	org := db.AssertExistsAndLoadBean(t, &User{ID: 3}).(*User)
 	testSuccess := func(userID, expectedCount int64) {
 		env, err := org.AccessibleReposEnv(userID)
@@ -521,7 +522,7 @@ func TestAccessibleReposEnv_CountRepos(t *testing.T) {
 }
 
 func TestAccessibleReposEnv_RepoIDs(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	org := db.AssertExistsAndLoadBean(t, &User{ID: 3}).(*User)
 	testSuccess := func(userID, _, pageSize int64, expectedRepoIDs []int64) {
 		env, err := org.AccessibleReposEnv(userID)
@@ -535,7 +536,7 @@ func TestAccessibleReposEnv_RepoIDs(t *testing.T) {
 }
 
 func TestAccessibleReposEnv_Repos(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	org := db.AssertExistsAndLoadBean(t, &User{ID: 3}).(*User)
 	testSuccess := func(userID int64, expectedRepoIDs []int64) {
 		env, err := org.AccessibleReposEnv(userID)
@@ -554,7 +555,7 @@ func TestAccessibleReposEnv_Repos(t *testing.T) {
 }
 
 func TestAccessibleReposEnv_MirrorRepos(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	org := db.AssertExistsAndLoadBean(t, &User{ID: 3}).(*User)
 	testSuccess := func(userID int64, expectedRepoIDs []int64) {
 		env, err := org.AccessibleReposEnv(userID)
@@ -573,7 +574,7 @@ func TestAccessibleReposEnv_MirrorRepos(t *testing.T) {
 }
 
 func TestHasOrgVisibleTypePublic(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	owner := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	user3 := db.AssertExistsAndLoadBean(t, &User{ID: 3}).(*User)
 
@@ -596,7 +597,7 @@ func TestHasOrgVisibleTypePublic(t *testing.T) {
 }
 
 func TestHasOrgVisibleTypeLimited(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	owner := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	user3 := db.AssertExistsAndLoadBean(t, &User{ID: 3}).(*User)
 
@@ -619,7 +620,7 @@ func TestHasOrgVisibleTypeLimited(t *testing.T) {
 }
 
 func TestHasOrgVisibleTypePrivate(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	owner := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	user3 := db.AssertExistsAndLoadBean(t, &User{ID: 3}).(*User)
 
@@ -642,7 +643,7 @@ func TestHasOrgVisibleTypePrivate(t *testing.T) {
 }
 
 func TestGetUsersWhoCanCreateOrgRepo(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	users, err := GetUsersWhoCanCreateOrgRepo(3)
 	assert.NoError(t, err)
diff --git a/models/project_test.go b/models/project_test.go
index 8c630d8bed..70dabb7674 100644
--- a/models/project_test.go
+++ b/models/project_test.go
@@ -7,7 +7,7 @@ package models
 import (
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/timeutil"
 
 	"github.com/stretchr/testify/assert"
@@ -32,7 +32,7 @@ func TestIsProjectTypeValid(t *testing.T) {
 }
 
 func TestGetProjects(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	projects, _, err := GetProjects(ProjectSearchOptions{RepoID: 1})
 	assert.NoError(t, err)
@@ -48,7 +48,7 @@ func TestGetProjects(t *testing.T) {
 }
 
 func TestProject(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	project := &Project{
 		Type:        ProjectTypeRepository,
diff --git a/models/protected_tag_test.go b/models/protected_tag_test.go
index fd29f7e64b..ed838483d2 100644
--- a/models/protected_tag_test.go
+++ b/models/protected_tag_test.go
@@ -7,12 +7,13 @@ package models
 import (
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
+
 	"github.com/stretchr/testify/assert"
 )
 
 func TestIsUserAllowed(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	pt := &ProtectedTag{}
 	allowed, err := pt.IsUserAllowed(1)
diff --git a/models/pull_test.go b/models/pull_test.go
index e6855240db..54083355ab 100644
--- a/models/pull_test.go
+++ b/models/pull_test.go
@@ -9,11 +9,12 @@ import (
 
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/models/unit"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestPullRequest_LoadAttributes(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	pr := db.AssertExistsAndLoadBean(t, &PullRequest{ID: 1}).(*PullRequest)
 	assert.NoError(t, pr.LoadAttributes())
 	assert.NotNil(t, pr.Merger)
@@ -21,7 +22,7 @@ func TestPullRequest_LoadAttributes(t *testing.T) {
 }
 
 func TestPullRequest_LoadIssue(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	pr := db.AssertExistsAndLoadBean(t, &PullRequest{ID: 1}).(*PullRequest)
 	assert.NoError(t, pr.LoadIssue())
 	assert.NotNil(t, pr.Issue)
@@ -32,7 +33,7 @@ func TestPullRequest_LoadIssue(t *testing.T) {
 }
 
 func TestPullRequest_LoadBaseRepo(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	pr := db.AssertExistsAndLoadBean(t, &PullRequest{ID: 1}).(*PullRequest)
 	assert.NoError(t, pr.LoadBaseRepo())
 	assert.NotNil(t, pr.BaseRepo)
@@ -43,7 +44,7 @@ func TestPullRequest_LoadBaseRepo(t *testing.T) {
 }
 
 func TestPullRequest_LoadHeadRepo(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	pr := db.AssertExistsAndLoadBean(t, &PullRequest{ID: 1}).(*PullRequest)
 	assert.NoError(t, pr.LoadHeadRepo())
 	assert.NotNil(t, pr.HeadRepo)
@@ -55,7 +56,7 @@ func TestPullRequest_LoadHeadRepo(t *testing.T) {
 // TODO TestNewPullRequest
 
 func TestPullRequestsNewest(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	prs, count, err := PullRequests(1, &PullRequestsOptions{
 		ListOptions: db.ListOptions{
 			Page: 1,
@@ -74,7 +75,7 @@ func TestPullRequestsNewest(t *testing.T) {
 }
 
 func TestPullRequestsOldest(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	prs, count, err := PullRequests(1, &PullRequestsOptions{
 		ListOptions: db.ListOptions{
 			Page: 1,
@@ -93,7 +94,7 @@ func TestPullRequestsOldest(t *testing.T) {
 }
 
 func TestGetUnmergedPullRequest(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	pr, err := GetUnmergedPullRequest(1, 1, "branch2", "master", PullRequestFlowGithub)
 	assert.NoError(t, err)
 	assert.Equal(t, int64(2), pr.ID)
@@ -104,7 +105,7 @@ func TestGetUnmergedPullRequest(t *testing.T) {
 }
 
 func TestGetUnmergedPullRequestsByHeadInfo(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	prs, err := GetUnmergedPullRequestsByHeadInfo(1, "branch2")
 	assert.NoError(t, err)
 	assert.Len(t, prs, 1)
@@ -115,7 +116,7 @@ func TestGetUnmergedPullRequestsByHeadInfo(t *testing.T) {
 }
 
 func TestGetUnmergedPullRequestsByBaseInfo(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	prs, err := GetUnmergedPullRequestsByBaseInfo(1, "master")
 	assert.NoError(t, err)
 	assert.Len(t, prs, 1)
@@ -126,7 +127,7 @@ func TestGetUnmergedPullRequestsByBaseInfo(t *testing.T) {
 }
 
 func TestGetPullRequestByIndex(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	pr, err := GetPullRequestByIndex(1, 2)
 	assert.NoError(t, err)
 	assert.Equal(t, int64(1), pr.BaseRepoID)
@@ -142,7 +143,7 @@ func TestGetPullRequestByIndex(t *testing.T) {
 }
 
 func TestGetPullRequestByID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	pr, err := GetPullRequestByID(1)
 	assert.NoError(t, err)
 	assert.Equal(t, int64(1), pr.ID)
@@ -154,7 +155,7 @@ func TestGetPullRequestByID(t *testing.T) {
 }
 
 func TestGetPullRequestByIssueID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	pr, err := GetPullRequestByIssueID(2)
 	assert.NoError(t, err)
 	assert.Equal(t, int64(2), pr.IssueID)
@@ -165,7 +166,7 @@ func TestGetPullRequestByIssueID(t *testing.T) {
 }
 
 func TestPullRequest_Update(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	pr := db.AssertExistsAndLoadBean(t, &PullRequest{ID: 1}).(*PullRequest)
 	pr.BaseBranch = "baseBranch"
 	pr.HeadBranch = "headBranch"
@@ -178,7 +179,7 @@ func TestPullRequest_Update(t *testing.T) {
 }
 
 func TestPullRequest_UpdateCols(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	pr := &PullRequest{
 		ID:         1,
 		BaseBranch: "baseBranch",
@@ -193,7 +194,7 @@ func TestPullRequest_UpdateCols(t *testing.T) {
 }
 
 func TestPullRequestList_LoadAttributes(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	prs := []*PullRequest{
 		db.AssertExistsAndLoadBean(t, &PullRequest{ID: 1}).(*PullRequest),
@@ -211,7 +212,7 @@ func TestPullRequestList_LoadAttributes(t *testing.T) {
 // TODO TestAddTestPullRequestTask
 
 func TestPullRequest_IsWorkInProgress(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	pr := db.AssertExistsAndLoadBean(t, &PullRequest{ID: 2}).(*PullRequest)
 	pr.LoadIssue()
@@ -226,7 +227,7 @@ func TestPullRequest_IsWorkInProgress(t *testing.T) {
 }
 
 func TestPullRequest_GetWorkInProgressPrefixWorkInProgress(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	pr := db.AssertExistsAndLoadBean(t, &PullRequest{ID: 2}).(*PullRequest)
 	pr.LoadIssue()
@@ -242,7 +243,7 @@ func TestPullRequest_GetWorkInProgressPrefixWorkInProgress(t *testing.T) {
 }
 
 func TestPullRequest_GetDefaultMergeMessage_InternalTracker(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	pr := db.AssertExistsAndLoadBean(t, &PullRequest{ID: 2}).(*PullRequest)
 
 	assert.Equal(t, "Merge pull request 'issue3' (#3) from branch2 into master", pr.GetDefaultMergeMessage())
@@ -253,7 +254,7 @@ func TestPullRequest_GetDefaultMergeMessage_InternalTracker(t *testing.T) {
 }
 
 func TestPullRequest_GetDefaultMergeMessage_ExternalTracker(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	externalTracker := RepoUnit{
 		Type: unit.TypeExternalTracker,
diff --git a/models/repo_collaboration_test.go b/models/repo_collaboration_test.go
index 326fb4dbf7..5e6a0a5d94 100644
--- a/models/repo_collaboration_test.go
+++ b/models/repo_collaboration_test.go
@@ -8,11 +8,12 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestRepository_AddCollaborator(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	testSuccess := func(repoID, userID int64) {
 		repo := db.AssertExistsAndLoadBean(t, &Repository{ID: repoID}).(*Repository)
@@ -27,7 +28,7 @@ func TestRepository_AddCollaborator(t *testing.T) {
 }
 
 func TestRepository_GetCollaborators(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	test := func(repoID int64) {
 		repo := db.AssertExistsAndLoadBean(t, &Repository{ID: repoID}).(*Repository)
 		collaborators, err := repo.GetCollaborators(db.ListOptions{})
@@ -47,7 +48,7 @@ func TestRepository_GetCollaborators(t *testing.T) {
 }
 
 func TestRepository_IsCollaborator(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	test := func(repoID, userID int64, expected bool) {
 		repo := db.AssertExistsAndLoadBean(t, &Repository{ID: repoID}).(*Repository)
@@ -62,7 +63,7 @@ func TestRepository_IsCollaborator(t *testing.T) {
 }
 
 func TestRepository_ChangeCollaborationAccessMode(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 4}).(*Repository)
 	assert.NoError(t, repo.ChangeCollaborationAccessMode(4, AccessModeAdmin))
@@ -81,7 +82,7 @@ func TestRepository_ChangeCollaborationAccessMode(t *testing.T) {
 }
 
 func TestRepository_DeleteCollaboration(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 4}).(*Repository)
 	assert.NoError(t, repo.GetOwner())
diff --git a/models/repo_list_test.go b/models/repo_list_test.go
index 3c30cad564..eaf5e8a7ce 100644
--- a/models/repo_list_test.go
+++ b/models/repo_list_test.go
@@ -8,13 +8,14 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/util"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestSearchRepository(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// test search public repository on explore page
 	repos, count, err := SearchRepositoryByName(&SearchRepoOptions{
@@ -324,7 +325,7 @@ func TestSearchRepository(t *testing.T) {
 }
 
 func TestSearchRepositoryByTopicName(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	testCases := []struct {
 		name  string
diff --git a/models/repo_permission_test.go b/models/repo_permission_test.go
index 5e43937776..1f04a45315 100644
--- a/models/repo_permission_test.go
+++ b/models/repo_permission_test.go
@@ -9,11 +9,12 @@ import (
 
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/models/unit"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestRepoPermissionPublicNonOrgRepo(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// public non-organization repo
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 4}).(*Repository)
@@ -66,7 +67,7 @@ func TestRepoPermissionPublicNonOrgRepo(t *testing.T) {
 }
 
 func TestRepoPermissionPrivateNonOrgRepo(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// private non-organization repo
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 2}).(*Repository)
@@ -118,7 +119,7 @@ func TestRepoPermissionPrivateNonOrgRepo(t *testing.T) {
 }
 
 func TestRepoPermissionPublicOrgRepo(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// public organization repo
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 32}).(*Repository)
@@ -180,7 +181,7 @@ func TestRepoPermissionPublicOrgRepo(t *testing.T) {
 }
 
 func TestRepoPermissionPrivateOrgRepo(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// private organization repo
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 24}).(*Repository)
diff --git a/models/repo_pushmirror_test.go b/models/repo_pushmirror_test.go
index 65ef918141..aa4465082f 100644
--- a/models/repo_pushmirror_test.go
+++ b/models/repo_pushmirror_test.go
@@ -8,14 +8,14 @@ import (
 	"testing"
 	"time"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/timeutil"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestPushMirrorsIterate(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	now := timeutil.TimeStampNow()
 
diff --git a/models/repo_redirect_test.go b/models/repo_redirect_test.go
index 9400422752..bf42d4854c 100644
--- a/models/repo_redirect_test.go
+++ b/models/repo_redirect_test.go
@@ -8,11 +8,12 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestLookupRepoRedirect(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repoID, err := LookupRepoRedirect(2, "oldrepo1")
 	assert.NoError(t, err)
@@ -24,7 +25,7 @@ func TestLookupRepoRedirect(t *testing.T) {
 
 func TestNewRepoRedirect(t *testing.T) {
 	// redirect to a completely new name
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
 	assert.NoError(t, newRepoRedirect(db.GetEngine(db.DefaultContext), repo.OwnerID, repo.ID, repo.Name, "newreponame"))
@@ -43,7 +44,7 @@ func TestNewRepoRedirect(t *testing.T) {
 
 func TestNewRepoRedirect2(t *testing.T) {
 	// redirect to previously used name
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
 	assert.NoError(t, newRepoRedirect(db.GetEngine(db.DefaultContext), repo.OwnerID, repo.ID, repo.Name, "oldrepo1"))
@@ -62,7 +63,7 @@ func TestNewRepoRedirect2(t *testing.T) {
 
 func TestNewRepoRedirect3(t *testing.T) {
 	// redirect for a previously-unredirected repo
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 2}).(*Repository)
 	assert.NoError(t, newRepoRedirect(db.GetEngine(db.DefaultContext), repo.OwnerID, repo.ID, repo.Name, "newreponame"))
diff --git a/models/repo_test.go b/models/repo_test.go
index 425e8c0191..2eb6e817ec 100644
--- a/models/repo_test.go
+++ b/models/repo_test.go
@@ -14,13 +14,14 @@ import (
 
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/models/unit"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/markup"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestMetas(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repo := &Repository{Name: "testRepo"}
 	repo.Owner = &User{Name: "testOwner"}
@@ -68,7 +69,7 @@ func TestMetas(t *testing.T) {
 }
 
 func TestGetRepositoryCount(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	count, err1 := GetRepositoryCount(&User{ID: int64(10)})
 	privateCount, err2 := GetPrivateRepositoryCount(&User{ID: int64(10)})
@@ -81,7 +82,7 @@ func TestGetRepositoryCount(t *testing.T) {
 }
 
 func TestGetPublicRepositoryCount(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	count, err := GetPublicRepositoryCount(&User{ID: int64(10)})
 	assert.NoError(t, err)
@@ -89,7 +90,7 @@ func TestGetPublicRepositoryCount(t *testing.T) {
 }
 
 func TestGetPrivateRepositoryCount(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	count, err := GetPrivateRepositoryCount(&User{ID: int64(10)})
 	assert.NoError(t, err)
@@ -97,7 +98,7 @@ func TestGetPrivateRepositoryCount(t *testing.T) {
 }
 
 func TestUpdateRepositoryVisibilityChanged(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// Get sample repo and change visibility
 	repo, err := GetRepositoryByID(9)
@@ -117,7 +118,7 @@ func TestUpdateRepositoryVisibilityChanged(t *testing.T) {
 }
 
 func TestGetUserFork(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// User13 has repo 11 forked from repo10
 	repo, err := GetRepositoryByID(10)
@@ -136,7 +137,7 @@ func TestGetUserFork(t *testing.T) {
 }
 
 func TestRepoAPIURL(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 10}).(*Repository)
 
 	assert.Equal(t, "https://try.gitea.io/api/v1/repos/user12/repo10", repo.APIURL())
@@ -148,7 +149,7 @@ func TestUploadAvatar(t *testing.T) {
 	var buff bytes.Buffer
 	png.Encode(&buff, myImage)
 
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 10}).(*Repository)
 
 	err := repo.UploadAvatar(buff.Bytes())
@@ -162,7 +163,7 @@ func TestUploadBigAvatar(t *testing.T) {
 	var buff bytes.Buffer
 	png.Encode(&buff, myImage)
 
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 10}).(*Repository)
 
 	err := repo.UploadAvatar(buff.Bytes())
@@ -175,7 +176,7 @@ func TestDeleteAvatar(t *testing.T) {
 	var buff bytes.Buffer
 	png.Encode(&buff, myImage)
 
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 10}).(*Repository)
 
 	err := repo.UploadAvatar(buff.Bytes())
@@ -188,13 +189,13 @@ func TestDeleteAvatar(t *testing.T) {
 }
 
 func TestDoctorUserStarNum(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	assert.NoError(t, DoctorUserStarNum())
 }
 
 func TestRepoGetReviewers(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// test public repo
 	repo1 := db.AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
@@ -211,7 +212,7 @@ func TestRepoGetReviewers(t *testing.T) {
 }
 
 func TestRepoGetReviewerTeams(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repo2 := db.AssertExistsAndLoadBean(t, &Repository{ID: 2}).(*Repository)
 	teams, err := repo2.GetReviewerTeams()
diff --git a/models/repo_transfer_test.go b/models/repo_transfer_test.go
index 4c6b7254c2..71976def96 100644
--- a/models/repo_transfer_test.go
+++ b/models/repo_transfer_test.go
@@ -8,11 +8,12 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestRepositoryTransfer(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	doer := db.AssertExistsAndLoadBean(t, &User{ID: 3}).(*User)
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 3}).(*Repository)
diff --git a/models/repo_watch_test.go b/models/repo_watch_test.go
index 52222af2ca..9f20a088f5 100644
--- a/models/repo_watch_test.go
+++ b/models/repo_watch_test.go
@@ -8,13 +8,14 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/setting"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestIsWatching(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	assert.True(t, IsWatching(1, 1))
 	assert.True(t, IsWatching(4, 1))
@@ -26,7 +27,7 @@ func TestIsWatching(t *testing.T) {
 }
 
 func TestWatchRepo(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	const repoID = 3
 	const userID = 2
 
@@ -40,7 +41,7 @@ func TestWatchRepo(t *testing.T) {
 }
 
 func TestGetWatchers(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
 	watches, err := GetWatchers(repo.ID)
@@ -57,7 +58,7 @@ func TestGetWatchers(t *testing.T) {
 }
 
 func TestRepository_GetWatchers(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
 	watchers, err := repo.GetWatchers(db.ListOptions{Page: 1})
@@ -74,7 +75,7 @@ func TestRepository_GetWatchers(t *testing.T) {
 }
 
 func TestNotifyWatchers(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	action := &Action{
 		ActUserID: 8,
@@ -111,7 +112,7 @@ func TestNotifyWatchers(t *testing.T) {
 }
 
 func TestWatchIfAuto(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
 	watchers, err := repo.GetWatchers(db.ListOptions{Page: 1})
@@ -168,7 +169,7 @@ func TestWatchIfAuto(t *testing.T) {
 }
 
 func TestWatchRepoMode(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	db.AssertCount(t, &Watch{UserID: 12, RepoID: 1}, 0)
 
diff --git a/models/review_test.go b/models/review_test.go
index c809a3d662..31d6c45535 100644
--- a/models/review_test.go
+++ b/models/review_test.go
@@ -8,11 +8,12 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestGetReviewByID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	review, err := GetReviewByID(1)
 	assert.NoError(t, err)
 	assert.Equal(t, "Demo Review", review.Content)
@@ -24,7 +25,7 @@ func TestGetReviewByID(t *testing.T) {
 }
 
 func TestReview_LoadAttributes(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	review := db.AssertExistsAndLoadBean(t, &Review{ID: 1}).(*Review)
 	assert.NoError(t, review.LoadAttributes())
 	assert.NotNil(t, review.Issue)
@@ -38,7 +39,7 @@ func TestReview_LoadAttributes(t *testing.T) {
 }
 
 func TestReview_LoadCodeComments(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	review := db.AssertExistsAndLoadBean(t, &Review{ID: 4}).(*Review)
 	assert.NoError(t, review.LoadAttributes())
@@ -57,7 +58,7 @@ func TestReviewType_Icon(t *testing.T) {
 }
 
 func TestFindReviews(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	reviews, err := FindReviews(FindReviewOptions{
 		Type:       ReviewTypeApprove,
 		IssueID:    2,
@@ -69,7 +70,7 @@ func TestFindReviews(t *testing.T) {
 }
 
 func TestGetCurrentReview(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	issue := db.AssertExistsAndLoadBean(t, &Issue{ID: 2}).(*Issue)
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
 
@@ -87,7 +88,7 @@ func TestGetCurrentReview(t *testing.T) {
 }
 
 func TestCreateReview(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	issue := db.AssertExistsAndLoadBean(t, &Issue{ID: 2}).(*Issue)
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
@@ -104,7 +105,7 @@ func TestCreateReview(t *testing.T) {
 }
 
 func TestGetReviewersByIssueID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	issue := db.AssertExistsAndLoadBean(t, &Issue{ID: 3}).(*Issue)
 	user2 := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
@@ -144,7 +145,7 @@ func TestGetReviewersByIssueID(t *testing.T) {
 }
 
 func TestDismissReview(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	rejectReviewExample := db.AssertExistsAndLoadBean(t, &Review{ID: 9}).(*Review)
 	requestReviewExample := db.AssertExistsAndLoadBean(t, &Review{ID: 11}).(*Review)
diff --git a/models/star_test.go b/models/star_test.go
index 326da8a861..8e448ae7cf 100644
--- a/models/star_test.go
+++ b/models/star_test.go
@@ -8,11 +8,12 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestStarRepo(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	const userID = 2
 	const repoID = 1
 	db.AssertNotExistsBean(t, &Star{UID: userID, RepoID: repoID})
@@ -25,14 +26,14 @@ func TestStarRepo(t *testing.T) {
 }
 
 func TestIsStaring(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	assert.True(t, IsStaring(2, 4))
 	assert.False(t, IsStaring(3, 4))
 }
 
 func TestRepository_GetStargazers(t *testing.T) {
 	// repo with stargazers
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 4}).(*Repository)
 	gazers, err := repo.GetStargazers(db.ListOptions{Page: 0})
 	assert.NoError(t, err)
@@ -43,7 +44,7 @@ func TestRepository_GetStargazers(t *testing.T) {
 
 func TestRepository_GetStargazers2(t *testing.T) {
 	// repo with stargazers
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 3}).(*Repository)
 	gazers, err := repo.GetStargazers(db.ListOptions{Page: 0})
 	assert.NoError(t, err)
@@ -52,7 +53,7 @@ func TestRepository_GetStargazers2(t *testing.T) {
 
 func TestUser_GetStarredRepos(t *testing.T) {
 	// user who has starred repos
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	starred, err := user.GetStarredRepos(false, 1, 10, "")
@@ -71,7 +72,7 @@ func TestUser_GetStarredRepos(t *testing.T) {
 
 func TestUser_GetStarredRepos2(t *testing.T) {
 	// user who has no starred repos
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
 	starred, err := user.GetStarredRepos(false, 1, 10, "")
@@ -84,7 +85,7 @@ func TestUser_GetStarredRepos2(t *testing.T) {
 }
 
 func TestUserGetStarredRepoCount(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	counts, err := user.GetStarredRepoCount(false)
diff --git a/models/token_test.go b/models/token_test.go
index 21d827ea61..0161764596 100644
--- a/models/token_test.go
+++ b/models/token_test.go
@@ -8,11 +8,12 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestNewAccessToken(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	token := &AccessToken{
 		UID:  3,
 		Name: "Token C",
@@ -31,7 +32,7 @@ func TestNewAccessToken(t *testing.T) {
 func TestAccessTokenByNameExists(t *testing.T) {
 	name := "Token Gitea"
 
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	token := &AccessToken{
 		UID:  3,
 		Name: name,
@@ -64,7 +65,7 @@ func TestAccessTokenByNameExists(t *testing.T) {
 }
 
 func TestGetAccessTokenBySHA(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	token, err := GetAccessTokenBySHA("d2c6c1ba3890b309189a8e618c72a162e4efbf36")
 	assert.NoError(t, err)
 	assert.Equal(t, int64(1), token.UID)
@@ -82,7 +83,7 @@ func TestGetAccessTokenBySHA(t *testing.T) {
 }
 
 func TestListAccessTokens(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	tokens, err := ListAccessTokens(ListAccessTokensOptions{UserID: 1})
 	assert.NoError(t, err)
 	if assert.Len(t, tokens, 2) {
@@ -105,7 +106,7 @@ func TestListAccessTokens(t *testing.T) {
 }
 
 func TestUpdateAccessToken(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	token, err := GetAccessTokenBySHA("4c6f36e6cf498e2a448662f915d932c09c5a146c")
 	assert.NoError(t, err)
 	token.Name = "Token Z"
@@ -115,7 +116,7 @@ func TestUpdateAccessToken(t *testing.T) {
 }
 
 func TestDeleteAccessTokenByID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	token, err := GetAccessTokenBySHA("4c6f36e6cf498e2a448662f915d932c09c5a146c")
 	assert.NoError(t, err)
diff --git a/models/topic_test.go b/models/topic_test.go
index b069deaba3..def946b666 100644
--- a/models/topic_test.go
+++ b/models/topic_test.go
@@ -8,6 +8,7 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -16,7 +17,7 @@ func TestAddTopic(t *testing.T) {
 	repo1NrOfTopics := 3
 	repo2NrOfTopics := 2
 
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	topics, _, err := FindTopics(&FindTopicOptions{})
 	assert.NoError(t, err)
diff --git a/models/unittest/bridge.go b/models/unittest/bridge.go
new file mode 100644
index 0000000000..776dd69519
--- /dev/null
+++ b/models/unittest/bridge.go
@@ -0,0 +1,54 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package unittest
+
+import (
+	"code.gitea.io/gitea/modules/unittestbridge"
+	"github.com/stretchr/testify/assert"
+)
+
+// For legacy code only, please refer to the `unittestbridge` package.
+
+// TestifyAsserter uses "stretchr/testify/assert" to do assert
+type TestifyAsserter struct {
+	t unittestbridge.Tester
+}
+
+// Errorf assert Errorf
+func (ta TestifyAsserter) Errorf(format string, args ...interface{}) {
+	ta.t.Errorf(format, args)
+}
+
+// NoError assert NoError
+func (ta TestifyAsserter) NoError(err error, msgAndArgs ...interface{}) bool {
+	return assert.NoError(ta, err, msgAndArgs...)
+}
+
+// EqualValues assert EqualValues
+func (ta TestifyAsserter) EqualValues(expected, actual interface{}, msgAndArgs ...interface{}) bool {
+	return assert.EqualValues(ta, expected, actual, msgAndArgs...)
+}
+
+// Equal assert Equal
+func (ta TestifyAsserter) Equal(expected, actual interface{}, msgAndArgs ...interface{}) bool {
+	return assert.Equal(ta, expected, actual, msgAndArgs...)
+}
+
+// True assert True
+func (ta TestifyAsserter) True(value bool, msgAndArgs ...interface{}) bool {
+	return assert.True(ta, value, msgAndArgs...)
+}
+
+// False assert False
+func (ta TestifyAsserter) False(value bool, msgAndArgs ...interface{}) bool {
+	return assert.False(ta, value, msgAndArgs...)
+}
+
+// InitUnitTestBridge init the unit test bridge. eg: models.CheckConsistencyFor can use testing and assert frameworks
+func InitUnitTestBridge() {
+	unittestbridge.SetNewAsserterFunc(func(t unittestbridge.Tester) unittestbridge.Asserter {
+		return &TestifyAsserter{t: t}
+	})
+}
diff --git a/models/db/test_fixtures.go b/models/unittest/fixtures.go
index 2715b688ea..af60df7b68 100644
--- a/models/db/test_fixtures.go
+++ b/models/unittest/fixtures.go
@@ -1,28 +1,34 @@
-// Copyright 2017 The Gitea Authors. All rights reserved.
+// Copyright 2021 The Gitea Authors. All rights reserved.
 // Use of this source code is governed by a MIT-style
 // license that can be found in the LICENSE file.
 
-package db
+package unittest
 
 import (
 	"fmt"
 	"os"
 	"time"
 
+	"code.gitea.io/gitea/models/db"
+
 	"github.com/go-testfixtures/testfixtures/v3"
+
 	"xorm.io/xorm"
 	"xorm.io/xorm/schemas"
 )
 
 var fixtures *testfixtures.Loader
 
-// InitFixtures initialize test fixtures for a test database
-func InitFixtures(opts FixturesOptions, engine ...*xorm.Engine) (err error) {
-	e := x
+func getXORMEngine(engine ...*xorm.Engine) (x *xorm.Engine) {
 	if len(engine) == 1 {
-		e = engine[0]
+		return engine[0]
 	}
+	return db.DefaultContext.(*db.Context).Engine().(*xorm.Engine)
+}
 
+// InitFixtures initialize test fixtures for a test database
+func InitFixtures(opts FixturesOptions, engine ...*xorm.Engine) (err error) {
+	e := getXORMEngine(engine...)
 	var testfiles func(*testfixtures.Loader) error
 	if opts.Dir != "" {
 		testfiles = testfixtures.Directory(opts.Dir)
@@ -64,10 +70,7 @@ func InitFixtures(opts FixturesOptions, engine ...*xorm.Engine) (err error) {
 
 // LoadFixtures load fixtures for a test database
 func LoadFixtures(engine ...*xorm.Engine) error {
-	e := x
-	if len(engine) == 1 {
-		e = engine[0]
-	}
+	e := getXORMEngine(engine...)
 	var err error
 	// Database transaction conflicts could occur and result in ROLLBACK
 	// As a simple workaround, we just retry 20 times.
diff --git a/models/unittest/testdb.go b/models/unittest/testdb.go
new file mode 100644
index 0000000000..b4f8c813af
--- /dev/null
+++ b/models/unittest/testdb.go
@@ -0,0 +1,154 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package unittest
+
+import (
+	"fmt"
+	"net/url"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/modules/base"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/storage"
+	"code.gitea.io/gitea/modules/util"
+
+	"github.com/stretchr/testify/assert"
+
+	"xorm.io/xorm"
+	"xorm.io/xorm/names"
+)
+
+// giteaRoot a path to the gitea root
+var (
+	giteaRoot   string
+	fixturesDir string
+)
+
+// FixturesDir returns the fixture directory
+func FixturesDir() string {
+	return fixturesDir
+}
+
+func fatalTestError(fmtStr string, args ...interface{}) {
+	_, _ = fmt.Fprintf(os.Stderr, fmtStr, args...)
+	os.Exit(1)
+}
+
+// MainTest a reusable TestMain(..) function for unit tests that need to use a
+// test database. Creates the test database, and sets necessary settings.
+func MainTest(m *testing.M, pathToGiteaRoot string, fixtureFiles ...string) {
+	var err error
+	InitUnitTestBridge()
+	giteaRoot = pathToGiteaRoot
+	fixturesDir = filepath.Join(pathToGiteaRoot, "models", "fixtures")
+
+	var opts FixturesOptions
+	if len(fixtureFiles) == 0 {
+		opts.Dir = fixturesDir
+	} else {
+		for _, f := range fixtureFiles {
+			if len(f) != 0 {
+				opts.Files = append(opts.Files, filepath.Join(fixturesDir, f))
+			}
+		}
+	}
+
+	if err = CreateTestEngine(opts); err != nil {
+		fatalTestError("Error creating test engine: %v\n", err)
+	}
+
+	setting.AppURL = "https://try.gitea.io/"
+	setting.RunUser = "runuser"
+	setting.SSH.Port = 3000
+	setting.SSH.Domain = "try.gitea.io"
+	setting.Database.UseSQLite3 = true
+	setting.RepoRootPath, err = os.MkdirTemp(os.TempDir(), "repos")
+	if err != nil {
+		fatalTestError("TempDir: %v\n", err)
+	}
+	setting.AppDataPath, err = os.MkdirTemp(os.TempDir(), "appdata")
+	if err != nil {
+		fatalTestError("TempDir: %v\n", err)
+	}
+	setting.AppWorkPath = pathToGiteaRoot
+	setting.StaticRootPath = pathToGiteaRoot
+	setting.GravatarSourceURL, err = url.Parse("https://secure.gravatar.com/avatar/")
+	if err != nil {
+		fatalTestError("url.Parse: %v\n", err)
+	}
+	setting.Attachment.Storage.Path = filepath.Join(setting.AppDataPath, "attachments")
+
+	setting.LFS.Storage.Path = filepath.Join(setting.AppDataPath, "lfs")
+
+	setting.Avatar.Storage.Path = filepath.Join(setting.AppDataPath, "avatars")
+
+	setting.RepoAvatar.Storage.Path = filepath.Join(setting.AppDataPath, "repo-avatars")
+
+	setting.RepoArchive.Storage.Path = filepath.Join(setting.AppDataPath, "repo-archive")
+
+	if err = storage.Init(); err != nil {
+		fatalTestError("storage.Init: %v\n", err)
+	}
+
+	if err = util.RemoveAll(setting.RepoRootPath); err != nil {
+		fatalTestError("util.RemoveAll: %v\n", err)
+	}
+	if err = util.CopyDir(filepath.Join(pathToGiteaRoot, "integrations", "gitea-repositories-meta"), setting.RepoRootPath); err != nil {
+		fatalTestError("util.CopyDir: %v\n", err)
+	}
+
+	exitStatus := m.Run()
+	if err = util.RemoveAll(setting.RepoRootPath); err != nil {
+		fatalTestError("util.RemoveAll: %v\n", err)
+	}
+	if err = util.RemoveAll(setting.AppDataPath); err != nil {
+		fatalTestError("util.RemoveAll: %v\n", err)
+	}
+	os.Exit(exitStatus)
+}
+
+// FixturesOptions fixtures needs to be loaded options
+type FixturesOptions struct {
+	Dir   string
+	Files []string
+}
+
+// CreateTestEngine creates a memory database and loads the fixture data from fixturesDir
+func CreateTestEngine(opts FixturesOptions) error {
+	x, err := xorm.NewEngine("sqlite3", "file::memory:?cache=shared&_txlock=immediate")
+	if err != nil {
+		return err
+	}
+	x.SetMapper(names.GonicMapper{})
+	db.SetUnitTestEngine(x)
+
+	if err = db.SyncAllTables(); err != nil {
+		return err
+	}
+	switch os.Getenv("GITEA_UNIT_TESTS_VERBOSE") {
+	case "true", "1":
+		x.ShowSQL(true)
+	}
+
+	return InitFixtures(opts)
+}
+
+// PrepareTestDatabase load test fixtures into test database
+func PrepareTestDatabase() error {
+	return LoadFixtures()
+}
+
+// PrepareTestEnv prepares the environment for unit tests. Can only be called
+// by tests that use the above MainTest(..) function.
+func PrepareTestEnv(t testing.TB) {
+	assert.NoError(t, PrepareTestDatabase())
+	assert.NoError(t, util.RemoveAll(setting.RepoRootPath))
+	metaPath := filepath.Join(giteaRoot, "integrations", "gitea-repositories-meta")
+	assert.NoError(t, util.CopyDir(metaPath, setting.RepoRootPath))
+	base.SetupGiteaRoot() // Makes sure GITEA_ROOT is set
+}
diff --git a/models/user/email_address_test.go b/models/user/email_address_test.go
index 5ed0bf8884..642c2b3876 100644
--- a/models/user/email_address_test.go
+++ b/models/user/email_address_test.go
@@ -8,12 +8,13 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestGetEmailAddresses(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	emails, _ := GetEmailAddresses(int64(1))
 	if assert.Len(t, emails, 3) {
@@ -30,7 +31,7 @@ func TestGetEmailAddresses(t *testing.T) {
 }
 
 func TestIsEmailUsed(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	isExist, _ := IsEmailUsed(db.DefaultContext, "")
 	assert.True(t, isExist)
@@ -41,7 +42,7 @@ func TestIsEmailUsed(t *testing.T) {
 }
 
 func TestAddEmailAddress(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	assert.NoError(t, AddEmailAddress(&EmailAddress{
 		Email:       "user1234567890@example.com",
@@ -60,7 +61,7 @@ func TestAddEmailAddress(t *testing.T) {
 }
 
 func TestAddEmailAddresses(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// insert multiple email address
 	emails := make([]*EmailAddress, 2)
@@ -83,7 +84,7 @@ func TestAddEmailAddresses(t *testing.T) {
 }
 
 func TestDeleteEmailAddress(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	assert.NoError(t, DeleteEmailAddress(&EmailAddress{
 		UID:        int64(1),
@@ -108,7 +109,7 @@ func TestDeleteEmailAddress(t *testing.T) {
 }
 
 func TestDeleteEmailAddresses(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// delete multiple email address
 	emails := make([]*EmailAddress, 2)
diff --git a/models/user/main_test.go b/models/user/main_test.go
index 2999c4c81d..1dd9fb2781 100644
--- a/models/user/main_test.go
+++ b/models/user/main_test.go
@@ -8,11 +8,11 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."),
+	unittest.MainTest(m, filepath.Join("..", ".."),
 		"email_address.yml",
 		"user_redirect.yml",
 	)
diff --git a/models/user/redirect_test.go b/models/user/redirect_test.go
index b33c42cf3d..82a0a0a2e2 100644
--- a/models/user/redirect_test.go
+++ b/models/user/redirect_test.go
@@ -7,12 +7,13 @@ package user
 import (
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
+
 	"github.com/stretchr/testify/assert"
 )
 
 func TestLookupUserRedirect(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	userID, err := LookupUserRedirect("olduser1")
 	assert.NoError(t, err)
diff --git a/models/user_email_test.go b/models/user_email_test.go
index 8c2bb48b94..bde0778b64 100644
--- a/models/user_email_test.go
+++ b/models/user_email_test.go
@@ -8,6 +8,7 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/util"
 
@@ -15,7 +16,7 @@ import (
 )
 
 func TestMakeEmailPrimary(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	email := &user_model.EmailAddress{
 		Email: "user567890@example.com",
@@ -49,7 +50,7 @@ func TestMakeEmailPrimary(t *testing.T) {
 }
 
 func TestActivate(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	email := &user_model.EmailAddress{
 		ID:    int64(1),
@@ -68,7 +69,7 @@ func TestActivate(t *testing.T) {
 }
 
 func TestListEmails(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// Must find all users and their emails
 	opts := &SearchEmailOptions{
diff --git a/models/user_follow_test.go b/models/user_follow_test.go
index ae8faad6fa..c7e56410f0 100644
--- a/models/user_follow_test.go
+++ b/models/user_follow_test.go
@@ -8,11 +8,12 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestIsFollowing(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	assert.True(t, IsFollowing(4, 2))
 	assert.False(t, IsFollowing(2, 4))
 	assert.False(t, IsFollowing(5, db.NonexistentID))
@@ -21,7 +22,7 @@ func TestIsFollowing(t *testing.T) {
 }
 
 func TestFollowUser(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	testSuccess := func(followerID, followedID int64) {
 		assert.NoError(t, FollowUser(followerID, followedID))
@@ -36,7 +37,7 @@ func TestFollowUser(t *testing.T) {
 }
 
 func TestUnfollowUser(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	testSuccess := func(followerID, followedID int64) {
 		assert.NoError(t, UnfollowUser(followerID, followedID))
diff --git a/models/user_heatmap_test.go b/models/user_heatmap_test.go
index 8d2002b1a0..85e678e933 100644
--- a/models/user_heatmap_test.go
+++ b/models/user_heatmap_test.go
@@ -10,6 +10,7 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/json"
 	"code.gitea.io/gitea/modules/timeutil"
 
@@ -39,7 +40,7 @@ func TestGetUserHeatmapDataByUser(t *testing.T) {
 		{10, 10, 3, `[{"timestamp":1603009800,"contributions":1},{"timestamp":1603010700,"contributions":2}]`},
 	}
 	// Prepare
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// Mock time
 	timeutil.Set(time.Date(2021, 1, 1, 0, 0, 0, 0, time.UTC))
diff --git a/models/user_openid_test.go b/models/user_openid_test.go
index 3c17b0742c..d0d801ad18 100644
--- a/models/user_openid_test.go
+++ b/models/user_openid_test.go
@@ -7,12 +7,13 @@ package models
 import (
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
+
 	"github.com/stretchr/testify/assert"
 )
 
 func TestGetUserOpenIDs(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	oids, err := GetUserOpenIDs(int64(1))
 	if assert.NoError(t, err) && assert.Len(t, oids, 2) {
@@ -30,7 +31,7 @@ func TestGetUserOpenIDs(t *testing.T) {
 }
 
 func TestGetUserByOpenID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	_, err := GetUserByOpenID("https://unknown")
 	if assert.Error(t, err) {
@@ -49,7 +50,7 @@ func TestGetUserByOpenID(t *testing.T) {
 }
 
 func TestToggleUserOpenIDVisibility(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	oids, err := GetUserOpenIDs(int64(2))
 	if !assert.NoError(t, err) || !assert.Len(t, oids, 1) {
 		return
diff --git a/models/user_test.go b/models/user_test.go
index 58044d1e99..9a91a9b257 100644
--- a/models/user_test.go
+++ b/models/user_test.go
@@ -12,6 +12,7 @@ import (
 
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/models/login"
+	"code.gitea.io/gitea/models/unittest"
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/structs"
@@ -21,7 +22,7 @@ import (
 )
 
 func TestOAuth2Application_LoadUser(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	app := db.AssertExistsAndLoadBean(t, &login.OAuth2Application{ID: 1}).(*login.OAuth2Application)
 	user, err := GetUserByID(app.UID)
 	assert.NoError(t, err)
@@ -29,7 +30,7 @@ func TestOAuth2Application_LoadUser(t *testing.T) {
 }
 
 func TestUserIsPublicMember(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	tt := []struct {
 		uid      int64
@@ -55,7 +56,7 @@ func testUserIsPublicMember(t *testing.T, uid, orgID int64, expected bool) {
 }
 
 func TestIsUserOrgOwner(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	tt := []struct {
 		uid      int64
@@ -81,7 +82,7 @@ func testIsUserOrgOwner(t *testing.T, uid, orgID int64, expected bool) {
 }
 
 func TestGetUserEmailsByNames(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// ignore none active user email
 	assert.Equal(t, []string{"user8@example.com"}, GetUserEmailsByNames([]string{"user8", "user9"}))
@@ -91,7 +92,7 @@ func TestGetUserEmailsByNames(t *testing.T) {
 }
 
 func TestCanCreateOrganization(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	admin := db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
 	assert.True(t, admin.CanCreateOrganization())
@@ -109,7 +110,7 @@ func TestCanCreateOrganization(t *testing.T) {
 }
 
 func TestSearchUsers(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	testSuccess := func(opts *SearchUserOptions, expectedUserOrOrgIDs []int64) {
 		users, _, err := SearchUsers(opts)
 		assert.NoError(t, err)
@@ -178,7 +179,7 @@ func TestSearchUsers(t *testing.T) {
 
 func TestDeleteUser(t *testing.T) {
 	test := func(userID int64) {
-		assert.NoError(t, db.PrepareTestDatabase())
+		assert.NoError(t, unittest.PrepareTestDatabase())
 		user := db.AssertExistsAndLoadBean(t, &User{ID: userID}).(*User)
 
 		ownedRepos := make([]*Repository, 0, 10)
@@ -212,7 +213,7 @@ func TestDeleteUser(t *testing.T) {
 }
 
 func TestEmailNotificationPreferences(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	for _, test := range []struct {
 		expected string
@@ -280,7 +281,7 @@ func BenchmarkHashPassword(b *testing.B) {
 }
 
 func TestGetOrgRepositoryIDs(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	user2 := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	user4 := db.AssertExistsAndLoadBean(t, &User{ID: 4}).(*User)
 	user5 := db.AssertExistsAndLoadBean(t, &User{ID: 5}).(*User)
@@ -393,7 +394,7 @@ func TestCreateUser_Issue5882(t *testing.T) {
 }
 
 func TestGetUserIDsByNames(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// ignore non existing
 	IDs, err := GetUserIDsByNames([]string{"user1", "user2", "none_existing_user"}, true)
@@ -407,7 +408,7 @@ func TestGetUserIDsByNames(t *testing.T) {
 }
 
 func TestGetMaileableUsersByIDs(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	results, err := GetMaileableUsersByIDs([]int64{1, 4}, false)
 	assert.NoError(t, err)
@@ -426,7 +427,7 @@ func TestGetMaileableUsersByIDs(t *testing.T) {
 }
 
 func TestAddLdapSSHPublicKeys(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	s := &login.Source{ID: 1}
@@ -494,7 +495,7 @@ ssh-dss AAAAB3NzaC1kc3MAAACBAOChCC7lf6Uo9n7BmZ6M8St19PZf4Tn59NriyboW2x/DZuYAz3ib
 }
 
 func TestUpdateUser(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 
 	user.KeepActivityPrivate = true
@@ -515,7 +516,7 @@ func TestUpdateUser(t *testing.T) {
 
 func TestNewUserRedirect(t *testing.T) {
 	// redirect to a completely new name
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
 	assert.NoError(t, user_model.NewUserRedirect(db.DefaultContext, user.ID, user.Name, "newusername"))
@@ -532,7 +533,7 @@ func TestNewUserRedirect(t *testing.T) {
 
 func TestNewUserRedirect2(t *testing.T) {
 	// redirect to previously used name
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
 	assert.NoError(t, user_model.NewUserRedirect(db.DefaultContext, user.ID, user.Name, "olduser1"))
@@ -549,7 +550,7 @@ func TestNewUserRedirect2(t *testing.T) {
 
 func TestNewUserRedirect3(t *testing.T) {
 	// redirect for a previously-unredirected user
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user := db.AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
 	assert.NoError(t, user_model.NewUserRedirect(db.DefaultContext, user.ID, user.Name, "newusername"))
diff --git a/models/userlist_test.go b/models/userlist_test.go
index 9e75f783f1..2b8518c92f 100644
--- a/models/userlist_test.go
+++ b/models/userlist_test.go
@@ -8,12 +8,13 @@ import (
 	"fmt"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
+
 	"github.com/stretchr/testify/assert"
 )
 
 func TestUserListIsPublicMember(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	tt := []struct {
 		orgid    int64
 		expected map[int64]bool
@@ -39,7 +40,7 @@ func testUserListIsPublicMember(t *testing.T, orgID int64, expected map[int64]bo
 }
 
 func TestUserListIsUserOrgOwner(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	tt := []struct {
 		orgid    int64
 		expected map[int64]bool
@@ -65,7 +66,7 @@ func testUserListIsUserOrgOwner(t *testing.T, orgID int64, expected map[int64]bo
 }
 
 func TestUserListIsTwoFaEnrolled(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	tt := []struct {
 		orgid    int64
 		expected map[int64]bool
diff --git a/models/webhook/main_test.go b/models/webhook/main_test.go
index f94612a755..89c947b061 100644
--- a/models/webhook/main_test.go
+++ b/models/webhook/main_test.go
@@ -8,9 +8,9 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."), "webhook.yml", "hook_task.yml")
+	unittest.MainTest(m, filepath.Join("..", ".."), "webhook.yml", "hook_task.yml")
 }
diff --git a/models/webhook/webhook_test.go b/models/webhook/webhook_test.go
index df2c37b355..6d7957ba64 100644
--- a/models/webhook/webhook_test.go
+++ b/models/webhook/webhook_test.go
@@ -10,6 +10,7 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/json"
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/util"
@@ -29,7 +30,7 @@ func TestIsValidHookContentType(t *testing.T) {
 }
 
 func TestWebhook_History(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	webhook := db.AssertExistsAndLoadBean(t, &Webhook{ID: 1}).(*Webhook)
 	tasks, err := webhook.History(0)
 	assert.NoError(t, err)
@@ -44,7 +45,7 @@ func TestWebhook_History(t *testing.T) {
 }
 
 func TestWebhook_UpdateEvent(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	webhook := db.AssertExistsAndLoadBean(t, &Webhook{ID: 1}).(*Webhook)
 	hookEvent := &HookEvent{
 		PushOnly:       true,
@@ -97,7 +98,7 @@ func TestCreateWebhook(t *testing.T) {
 }
 
 func TestGetWebhookByRepoID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	hook, err := GetWebhookByRepoID(1, 1)
 	assert.NoError(t, err)
 	assert.Equal(t, int64(1), hook.ID)
@@ -108,7 +109,7 @@ func TestGetWebhookByRepoID(t *testing.T) {
 }
 
 func TestGetWebhookByOrgID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	hook, err := GetWebhookByOrgID(3, 3)
 	assert.NoError(t, err)
 	assert.Equal(t, int64(3), hook.ID)
@@ -119,7 +120,7 @@ func TestGetWebhookByOrgID(t *testing.T) {
 }
 
 func TestGetActiveWebhooksByRepoID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	hooks, err := ListWebhooksByOpts(&ListWebhookOptions{RepoID: 1, IsActive: util.OptionalBoolTrue})
 	assert.NoError(t, err)
 	if assert.Len(t, hooks, 1) {
@@ -129,7 +130,7 @@ func TestGetActiveWebhooksByRepoID(t *testing.T) {
 }
 
 func TestGetWebhooksByRepoID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	hooks, err := ListWebhooksByOpts(&ListWebhookOptions{RepoID: 1})
 	assert.NoError(t, err)
 	if assert.Len(t, hooks, 2) {
@@ -139,7 +140,7 @@ func TestGetWebhooksByRepoID(t *testing.T) {
 }
 
 func TestGetActiveWebhooksByOrgID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	hooks, err := ListWebhooksByOpts(&ListWebhookOptions{OrgID: 3, IsActive: util.OptionalBoolTrue})
 	assert.NoError(t, err)
 	if assert.Len(t, hooks, 1) {
@@ -149,7 +150,7 @@ func TestGetActiveWebhooksByOrgID(t *testing.T) {
 }
 
 func TestGetWebhooksByOrgID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	hooks, err := ListWebhooksByOpts(&ListWebhookOptions{OrgID: 3})
 	assert.NoError(t, err)
 	if assert.Len(t, hooks, 1) {
@@ -159,7 +160,7 @@ func TestGetWebhooksByOrgID(t *testing.T) {
 }
 
 func TestUpdateWebhook(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	hook := db.AssertExistsAndLoadBean(t, &Webhook{ID: 2}).(*Webhook)
 	hook.IsActive = true
 	hook.ContentType = ContentTypeForm
@@ -169,7 +170,7 @@ func TestUpdateWebhook(t *testing.T) {
 }
 
 func TestDeleteWebhookByRepoID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	db.AssertExistsAndLoadBean(t, &Webhook{ID: 2, RepoID: 1})
 	assert.NoError(t, DeleteWebhookByRepoID(1, 2))
 	db.AssertNotExistsBean(t, &Webhook{ID: 2, RepoID: 1})
@@ -180,7 +181,7 @@ func TestDeleteWebhookByRepoID(t *testing.T) {
 }
 
 func TestDeleteWebhookByOrgID(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	db.AssertExistsAndLoadBean(t, &Webhook{ID: 3, OrgID: 3})
 	assert.NoError(t, DeleteWebhookByOrgID(3, 3))
 	db.AssertNotExistsBean(t, &Webhook{ID: 3, OrgID: 3})
@@ -191,7 +192,7 @@ func TestDeleteWebhookByOrgID(t *testing.T) {
 }
 
 func TestHookTasks(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	hookTasks, err := HookTasks(1, 1)
 	assert.NoError(t, err)
 	if assert.Len(t, hookTasks, 1) {
@@ -204,7 +205,7 @@ func TestHookTasks(t *testing.T) {
 }
 
 func TestCreateHookTask(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	hookTask := &HookTask{
 		RepoID:    3,
 		HookID:    3,
@@ -216,7 +217,7 @@ func TestCreateHookTask(t *testing.T) {
 }
 
 func TestUpdateHookTask(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	hook := db.AssertExistsAndLoadBean(t, &HookTask{ID: 1}).(*HookTask)
 	hook.PayloadContent = "new payload content"
@@ -228,7 +229,7 @@ func TestUpdateHookTask(t *testing.T) {
 }
 
 func TestCleanupHookTaskTable_PerWebhook_DeletesDelivered(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	hookTask := &HookTask{
 		RepoID:      3,
 		HookID:      3,
@@ -245,7 +246,7 @@ func TestCleanupHookTaskTable_PerWebhook_DeletesDelivered(t *testing.T) {
 }
 
 func TestCleanupHookTaskTable_PerWebhook_LeavesUndelivered(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	hookTask := &HookTask{
 		RepoID:      2,
 		HookID:      4,
@@ -261,7 +262,7 @@ func TestCleanupHookTaskTable_PerWebhook_LeavesUndelivered(t *testing.T) {
 }
 
 func TestCleanupHookTaskTable_PerWebhook_LeavesMostRecentTask(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	hookTask := &HookTask{
 		RepoID:      2,
 		HookID:      4,
@@ -278,7 +279,7 @@ func TestCleanupHookTaskTable_PerWebhook_LeavesMostRecentTask(t *testing.T) {
 }
 
 func TestCleanupHookTaskTable_OlderThan_DeletesDelivered(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	hookTask := &HookTask{
 		RepoID:      3,
 		HookID:      3,
@@ -295,7 +296,7 @@ func TestCleanupHookTaskTable_OlderThan_DeletesDelivered(t *testing.T) {
 }
 
 func TestCleanupHookTaskTable_OlderThan_LeavesUndelivered(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	hookTask := &HookTask{
 		RepoID:      2,
 		HookID:      4,
@@ -311,7 +312,7 @@ func TestCleanupHookTaskTable_OlderThan_LeavesUndelivered(t *testing.T) {
 }
 
 func TestCleanupHookTaskTable_OlderThan_LeavesTaskEarlierThanAgeToDelete(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	hookTask := &HookTask{
 		RepoID:      2,
 		HookID:      4,
diff --git a/models/wiki_test.go b/models/wiki_test.go
index f1435e8178..2114425872 100644
--- a/models/wiki_test.go
+++ b/models/wiki_test.go
@@ -9,13 +9,14 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/setting"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestRepository_WikiCloneLink(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
 	cloneLink := repo.WikiCloneLink()
@@ -24,20 +25,20 @@ func TestRepository_WikiCloneLink(t *testing.T) {
 }
 
 func TestWikiPath(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	expected := filepath.Join(setting.RepoRootPath, "user2/repo1.wiki.git")
 	assert.Equal(t, expected, WikiPath("user2", "repo1"))
 }
 
 func TestRepository_WikiPath(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	repo := db.AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
 	expected := filepath.Join(setting.RepoRootPath, "user2/repo1.wiki.git")
 	assert.Equal(t, expected, repo.WikiPath())
 }
 
 func TestRepository_HasWiki(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	repo1 := db.AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
 	assert.True(t, repo1.HasWiki())
 	repo2 := db.AssertExistsAndLoadBean(t, &Repository{ID: 2}).(*Repository)
diff --git a/modules/appstate/appstate_test.go b/modules/appstate/appstate_test.go
index d8ab0a45fd..15fbc829ba 100644
--- a/modules/appstate/appstate_test.go
+++ b/modules/appstate/appstate_test.go
@@ -8,13 +8,13 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."), "")
+	unittest.MainTest(m, filepath.Join("..", ".."), "")
 }
 
 type testItem1 struct {
@@ -35,7 +35,7 @@ func (*testItem2) Name() string {
 }
 
 func TestAppStateDB(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	as := &DBStore{}
 
diff --git a/modules/convert/git_commit_test.go b/modules/convert/git_commit_test.go
index 298a006cb1..3cb55c6a6f 100644
--- a/modules/convert/git_commit_test.go
+++ b/modules/convert/git_commit_test.go
@@ -10,6 +10,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/git"
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/util"
@@ -18,7 +19,7 @@ import (
 )
 
 func TestToCommitMeta(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	headRepo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 1}).(*models.Repository)
 	sha1, _ := git.NewIDFromString("0000000000000000000000000000000000000000")
 	signature := &git.Signature{Name: "Test Signature", Email: "test@email.com", When: time.Unix(0, 0)}
diff --git a/modules/convert/issue_test.go b/modules/convert/issue_test.go
index 7c6b05e816..e44733c46d 100644
--- a/modules/convert/issue_test.go
+++ b/modules/convert/issue_test.go
@@ -11,6 +11,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/setting"
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/timeutil"
@@ -19,7 +20,7 @@ import (
 )
 
 func TestLabel_ToLabel(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	label := db.AssertExistsAndLoadBean(t, &models.Label{ID: 1}).(*models.Label)
 	repo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: label.RepoID}).(*models.Repository)
 	assert.Equal(t, &api.Label{
diff --git a/modules/convert/main_test.go b/modules/convert/main_test.go
index acb9802f97..307fd06197 100644
--- a/modules/convert/main_test.go
+++ b/modules/convert/main_test.go
@@ -8,9 +8,9 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."))
+	unittest.MainTest(m, filepath.Join("..", ".."))
 }
diff --git a/modules/convert/pull_test.go b/modules/convert/pull_test.go
index a2b1e12a37..f5310eb825 100644
--- a/modules/convert/pull_test.go
+++ b/modules/convert/pull_test.go
@@ -9,6 +9,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/structs"
 
 	"github.com/stretchr/testify/assert"
@@ -16,7 +17,7 @@ import (
 
 func TestPullRequest_APIFormat(t *testing.T) {
 	//with HeadRepo
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	headRepo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 1}).(*models.Repository)
 	pr := db.AssertExistsAndLoadBean(t, &models.PullRequest{ID: 1}).(*models.PullRequest)
 	assert.NoError(t, pr.LoadAttributes())
diff --git a/modules/convert/user_test.go b/modules/convert/user_test.go
index acf918dd99..fe26456f5d 100644
--- a/modules/convert/user_test.go
+++ b/modules/convert/user_test.go
@@ -9,13 +9,14 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	api "code.gitea.io/gitea/modules/structs"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestUser_ToUser(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user1 := db.AssertExistsAndLoadBean(t, &models.User{ID: 1, IsAdmin: true}).(*models.User)
 
diff --git a/modules/indexer/code/bleve_test.go b/modules/indexer/code/bleve_test.go
index 3d97e312f9..37ed2eb9f0 100644
--- a/modules/indexer/code/bleve_test.go
+++ b/modules/indexer/code/bleve_test.go
@@ -8,14 +8,14 @@ import (
 	"os"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/util"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestBleveIndexAndSearch(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 
 	dir, err := os.MkdirTemp("", "bleve.index")
 	assert.NoError(t, err)
diff --git a/modules/indexer/code/elastic_search_test.go b/modules/indexer/code/elastic_search_test.go
index c9d2c297bb..fc58633f16 100644
--- a/modules/indexer/code/elastic_search_test.go
+++ b/modules/indexer/code/elastic_search_test.go
@@ -8,12 +8,13 @@ import (
 	"os"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
+
 	"github.com/stretchr/testify/assert"
 )
 
 func TestESIndexAndSearch(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 
 	u := os.Getenv("TEST_INDEXER_CODE_ES_URL")
 	if u == "" {
diff --git a/modules/indexer/code/indexer_test.go b/modules/indexer/code/indexer_test.go
index 34930a84ca..b8fedcb323 100644
--- a/modules/indexer/code/indexer_test.go
+++ b/modules/indexer/code/indexer_test.go
@@ -8,12 +8,13 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
+
 	"github.com/stretchr/testify/assert"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", "..", ".."))
+	unittest.MainTest(m, filepath.Join("..", "..", ".."))
 }
 
 func testIndexer(name string, t *testing.T, indexer Indexer) {
diff --git a/modules/indexer/issues/indexer_test.go b/modules/indexer/issues/indexer_test.go
index 561f357f4d..edfaddb648 100644
--- a/modules/indexer/issues/indexer_test.go
+++ b/modules/indexer/issues/indexer_test.go
@@ -11,7 +11,7 @@ import (
 	"testing"
 	"time"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/util"
 
@@ -21,11 +21,11 @@ import (
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", "..", ".."))
+	unittest.MainTest(m, filepath.Join("..", "..", ".."))
 }
 
 func TestBleveSearchIssues(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	setting.Cfg = ini.Empty()
 
 	tmpIndexerDir, err := os.MkdirTemp("", "issues-indexer")
@@ -74,7 +74,7 @@ func TestBleveSearchIssues(t *testing.T) {
 }
 
 func TestDBSearchIssues(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	setting.Indexer.IssueType = "db"
 	InitIssueIndexer(true)
diff --git a/modules/indexer/stats/indexer_test.go b/modules/indexer/stats/indexer_test.go
index a4645b2083..c451e80238 100644
--- a/modules/indexer/stats/indexer_test.go
+++ b/modules/indexer/stats/indexer_test.go
@@ -10,7 +10,7 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/setting"
 
 	"gopkg.in/ini.v1"
@@ -19,11 +19,11 @@ import (
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", "..", ".."))
+	unittest.MainTest(m, filepath.Join("..", "..", ".."))
 }
 
 func TestRepoStatsIndex(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	setting.Cfg = ini.Empty()
 
 	setting.NewQueueService()
diff --git a/modules/migrations/gitea_uploader_test.go b/modules/migrations/gitea_uploader_test.go
index b8b947961f..b5763f30d9 100644
--- a/modules/migrations/gitea_uploader_test.go
+++ b/modules/migrations/gitea_uploader_test.go
@@ -12,6 +12,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/graceful"
 	"code.gitea.io/gitea/modules/migrations/base"
 	"code.gitea.io/gitea/modules/structs"
@@ -24,7 +25,7 @@ func TestGiteaUploadRepo(t *testing.T) {
 	// FIXME: Since no accesskey or user/password will trigger rate limit of github, just skip
 	t.Skip()
 
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 
 	user := db.AssertExistsAndLoadBean(t, &models.User{ID: 1}).(*models.User)
 
diff --git a/modules/migrations/main_test.go b/modules/migrations/main_test.go
index 5b29230659..e9108c3c93 100644
--- a/modules/migrations/main_test.go
+++ b/modules/migrations/main_test.go
@@ -10,14 +10,14 @@ import (
 	"testing"
 	"time"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/migrations/base"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."))
+	unittest.MainTest(m, filepath.Join("..", ".."))
 }
 
 func timePtr(t time.Time) *time.Time {
diff --git a/modules/migrations/migrate_test.go b/modules/migrations/migrate_test.go
index c050a9abc0..aecc263cc6 100644
--- a/modules/migrations/migrate_test.go
+++ b/modules/migrations/migrate_test.go
@@ -10,13 +10,14 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/setting"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestMigrateWhiteBlocklist(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	adminUser := db.AssertExistsAndLoadBean(t, &models.User{Name: "user1"}).(*models.User)
 	nonAdminUser := db.AssertExistsAndLoadBean(t, &models.User{Name: "user2"}).(*models.User)
diff --git a/modules/notification/action/action_test.go b/modules/notification/action/action_test.go
index 705a4fb2f4..e57069ed9a 100644
--- a/modules/notification/action/action_test.go
+++ b/modules/notification/action/action_test.go
@@ -11,15 +11,16 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", "..", ".."))
+	unittest.MainTest(m, filepath.Join("..", "..", ".."))
 }
 
 func TestRenameRepoAction(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user := db.AssertExistsAndLoadBean(t, &models.User{ID: 2}).(*models.User)
 	repo := db.AssertExistsAndLoadBean(t, &models.Repository{OwnerID: user.ID}).(*models.Repository)
diff --git a/modules/repofiles/action_test.go b/modules/repofiles/action_test.go
index c29cfd686d..59cb4df160 100644
--- a/modules/repofiles/action_test.go
+++ b/modules/repofiles/action_test.go
@@ -9,6 +9,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/repository"
 	"code.gitea.io/gitea/modules/setting"
 
@@ -16,7 +17,7 @@ import (
 )
 
 func TestUpdateIssuesCommit(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	pushCommits := []*repository.PushCommit{
 		{
 			Sha1:           "abcdef1",
@@ -118,7 +119,7 @@ func TestUpdateIssuesCommit(t *testing.T) {
 }
 
 func TestUpdateIssuesCommit_Colon(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	pushCommits := []*repository.PushCommit{
 		{
 			Sha1:           "abcdef2",
@@ -143,7 +144,7 @@ func TestUpdateIssuesCommit_Colon(t *testing.T) {
 }
 
 func TestUpdateIssuesCommit_Issue5957(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	user := db.AssertExistsAndLoadBean(t, &models.User{ID: 2}).(*models.User)
 
 	// Test that push to a non-default branch closes an issue.
@@ -177,7 +178,7 @@ func TestUpdateIssuesCommit_Issue5957(t *testing.T) {
 }
 
 func TestUpdateIssuesCommit_AnotherRepo(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	user := db.AssertExistsAndLoadBean(t, &models.User{ID: 2}).(*models.User)
 
 	// Test that a push to default branch closes issue in another repo
@@ -212,7 +213,7 @@ func TestUpdateIssuesCommit_AnotherRepo(t *testing.T) {
 }
 
 func TestUpdateIssuesCommit_AnotherRepo_FullAddress(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	user := db.AssertExistsAndLoadBean(t, &models.User{ID: 2}).(*models.User)
 
 	// Test that a push to default branch closes issue in another repo
@@ -247,7 +248,7 @@ func TestUpdateIssuesCommit_AnotherRepo_FullAddress(t *testing.T) {
 }
 
 func TestUpdateIssuesCommit_AnotherRepoNoPermission(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	user := db.AssertExistsAndLoadBean(t, &models.User{ID: 10}).(*models.User)
 
 	// Test that a push with close reference *can not* close issue
diff --git a/modules/repofiles/blob_test.go b/modules/repofiles/blob_test.go
index 5238dd6e74..c219892aec 100644
--- a/modules/repofiles/blob_test.go
+++ b/modules/repofiles/blob_test.go
@@ -7,7 +7,8 @@ package repofiles
 import (
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
+
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/test"
 
@@ -15,7 +16,7 @@ import (
 )
 
 func TestGetBlobBySHA(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1")
 	test.LoadRepo(t, ctx, 1)
 	test.LoadRepoCommit(t, ctx)
diff --git a/modules/repofiles/content_test.go b/modules/repofiles/content_test.go
index f68460d7ec..e3230698bc 100644
--- a/modules/repofiles/content_test.go
+++ b/modules/repofiles/content_test.go
@@ -8,7 +8,8 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
+
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/test"
 
@@ -16,7 +17,7 @@ import (
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."))
+	unittest.MainTest(m, filepath.Join("..", ".."))
 }
 
 func getExpectedReadmeContentsResponse() *api.ContentsResponse {
@@ -49,7 +50,7 @@ func getExpectedReadmeContentsResponse() *api.ContentsResponse {
 }
 
 func TestGetContents(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1")
 	ctx.SetParams(":id", "1")
 	test.LoadRepo(t, ctx, 1)
@@ -77,7 +78,7 @@ func TestGetContents(t *testing.T) {
 }
 
 func TestGetContentsOrListForDir(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1")
 	ctx.SetParams(":id", "1")
 	test.LoadRepo(t, ctx, 1)
@@ -112,7 +113,7 @@ func TestGetContentsOrListForDir(t *testing.T) {
 }
 
 func TestGetContentsOrListForFile(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1")
 	ctx.SetParams(":id", "1")
 	test.LoadRepo(t, ctx, 1)
@@ -140,7 +141,7 @@ func TestGetContentsOrListForFile(t *testing.T) {
 }
 
 func TestGetContentsErrors(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1")
 	ctx.SetParams(":id", "1")
 	test.LoadRepo(t, ctx, 1)
@@ -171,7 +172,7 @@ func TestGetContentsErrors(t *testing.T) {
 }
 
 func TestGetContentsOrListErrors(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1")
 	ctx.SetParams(":id", "1")
 	test.LoadRepo(t, ctx, 1)
@@ -202,7 +203,7 @@ func TestGetContentsOrListErrors(t *testing.T) {
 }
 
 func TestGetContentsOrListOfEmptyRepos(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo15")
 	ctx.SetParams(":id", "15")
 	test.LoadRepo(t, ctx, 15)
diff --git a/modules/repofiles/diff_test.go b/modules/repofiles/diff_test.go
index aeb4f76a45..463ce4ec67 100644
--- a/modules/repofiles/diff_test.go
+++ b/modules/repofiles/diff_test.go
@@ -8,7 +8,7 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/test"
 	"code.gitea.io/gitea/services/gitdiff"
 
@@ -16,7 +16,7 @@ import (
 )
 
 func TestGetDiffPreview(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1")
 	ctx.SetParams(":id", "1")
 	test.LoadRepo(t, ctx, 1)
@@ -129,7 +129,7 @@ func TestGetDiffPreview(t *testing.T) {
 }
 
 func TestGetDiffPreviewErrors(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1")
 	ctx.SetParams(":id", "1")
 	test.LoadRepo(t, ctx, 1)
diff --git a/modules/repofiles/file_test.go b/modules/repofiles/file_test.go
index 2974056549..54205a89c7 100644
--- a/modules/repofiles/file_test.go
+++ b/modules/repofiles/file_test.go
@@ -7,7 +7,7 @@ package repofiles
 import (
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/setting"
 	api "code.gitea.io/gitea/modules/structs"
@@ -81,7 +81,7 @@ func getExpectedFileResponse() *api.FileResponse {
 }
 
 func TestGetFileResponseFromCommit(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1")
 	ctx.SetParams(":id", "1")
 	test.LoadRepo(t, ctx, 1)
diff --git a/modules/repofiles/tree_test.go b/modules/repofiles/tree_test.go
index 9e2efa4216..512313c43b 100644
--- a/modules/repofiles/tree_test.go
+++ b/modules/repofiles/tree_test.go
@@ -7,7 +7,8 @@ package repofiles
 import (
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
+
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/test"
 
@@ -15,7 +16,7 @@ import (
 )
 
 func TestGetTreeBySHA(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1")
 	test.LoadRepo(t, ctx, 1)
 	test.LoadRepoCommit(t, ctx)
diff --git a/modules/repository/commits_test.go b/modules/repository/commits_test.go
index c62ad58449..c47d9cf48c 100644
--- a/modules/repository/commits_test.go
+++ b/modules/repository/commits_test.go
@@ -12,12 +12,13 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/git"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestPushCommits_ToAPIPayloadCommits(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	pushCommits := NewPushCommits()
 	pushCommits.Commits = []*PushCommit{
@@ -100,7 +101,7 @@ func TestPushCommits_ToAPIPayloadCommits(t *testing.T) {
 }
 
 func TestPushCommits_AvatarLink(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	pushCommits := NewPushCommits()
 	pushCommits.Commits = []*PushCommit{
diff --git a/modules/repository/create_test.go b/modules/repository/create_test.go
index 040c061d92..d833017160 100644
--- a/modules/repository/create_test.go
+++ b/modules/repository/create_test.go
@@ -10,13 +10,14 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/structs"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestIncludesAllRepositoriesTeams(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	testTeamRepositories := func(teamID int64, repoIds []int64) {
 		team := db.AssertExistsAndLoadBean(t, &models.Team{ID: teamID}).(*models.Team)
diff --git a/modules/repository/fork_test.go b/modules/repository/fork_test.go
index 7a05f9dd97..bfb813adbc 100644
--- a/modules/repository/fork_test.go
+++ b/modules/repository/fork_test.go
@@ -9,11 +9,12 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestForkRepository(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// user 13 has already forked repo10
 	user := db.AssertExistsAndLoadBean(t, &models.User{ID: 13}).(*models.User)
diff --git a/modules/repository/main_test.go b/modules/repository/main_test.go
index 91d0d36ca0..262d339481 100644
--- a/modules/repository/main_test.go
+++ b/modules/repository/main_test.go
@@ -8,9 +8,9 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."))
+	unittest.MainTest(m, filepath.Join("..", ".."))
 }
diff --git a/modules/unittestbridge/unittestbridge.go b/modules/unittestbridge/unittestbridge.go
new file mode 100644
index 0000000000..273cf5e70f
--- /dev/null
+++ b/modules/unittestbridge/unittestbridge.go
@@ -0,0 +1,46 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package unittestbridge
+
+// Usage: generally, non-unit-test code shouldn't depend on unit test code.
+// However, we have some code like models.CheckConsistencyFor, which need to do some unit test works.
+// Now we can not decouple models.CheckConsistencyFor from unit test code easily (cycle-import reasons).
+// So we introduce this `unit test bridge`:
+// * When a release binary is built, no testing/assert framework would be compiled into the binary, and CheckConsistencyFor won't run unit test related code
+// * When a unit test binary is built, the unit test code will init this bridge, then CheckConsistencyFor can run unit test related code
+//
+// Tester/Assert are intermediate interfaces, they should NOT be used in new code.
+// One day, if CheckConsistencyFor is clean enough, we can remove these intermediate interfaces.
+
+// Tester is the same as TestingT in "stretchr/testify/assert"
+// Tester can be used in non-unit-test code (ex: models.CheckConsistencyFor), it is used to isolate dependencies
+type Tester interface {
+	Errorf(format string, args ...interface{})
+}
+
+// Asserter can be used in non-unit-test code (ex: models.CheckConsistencyFor), it is used to isolate dependencies
+type Asserter interface {
+	Tester
+	NoError(err error, msgAndArgs ...interface{}) bool
+	EqualValues(expected, actual interface{}, msgAndArgs ...interface{}) bool
+	Equal(expected, actual interface{}, msgAndArgs ...interface{}) bool
+	True(value bool, msgAndArgs ...interface{}) bool
+	False(value bool, msgAndArgs ...interface{}) bool
+}
+
+var newAsserterFunc func(t Tester) Asserter
+
+// NewAsserter returns a new asserter, only works in unit test
+func NewAsserter(t Tester) Asserter {
+	if newAsserterFunc == nil {
+		panic("the newAsserterFunc is not set. you can only use assert in unit test.")
+	}
+	return newAsserterFunc(t)
+}
+
+// SetNewAsserterFunc in unit test, the asserter must be set first
+func SetNewAsserterFunc(f func(t Tester) Asserter) {
+	newAsserterFunc = f
+}
diff --git a/routers/api/v1/repo/hook_test.go b/routers/api/v1/repo/hook_test.go
index 60fa6cead3..ff0aaf2938 100644
--- a/routers/api/v1/repo/hook_test.go
+++ b/routers/api/v1/repo/hook_test.go
@@ -9,6 +9,7 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/models/webhook"
 	"code.gitea.io/gitea/modules/context"
 	"code.gitea.io/gitea/modules/test"
@@ -17,7 +18,7 @@ import (
 )
 
 func TestTestHook(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 
 	ctx := test.MockContext(t, "user2/repo1/wiki/_pages")
 	ctx.SetParams(":id", "1")
diff --git a/routers/api/v1/repo/main_test.go b/routers/api/v1/repo/main_test.go
index 7a66370e05..f9ed886999 100644
--- a/routers/api/v1/repo/main_test.go
+++ b/routers/api/v1/repo/main_test.go
@@ -8,9 +8,9 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", "..", "..", ".."))
+	unittest.MainTest(m, filepath.Join("..", "..", "..", ".."))
 }
diff --git a/routers/api/v1/repo/repo_test.go b/routers/api/v1/repo/repo_test.go
index e4fd4f9424..b992b93fd4 100644
--- a/routers/api/v1/repo/repo_test.go
+++ b/routers/api/v1/repo/repo_test.go
@@ -10,6 +10,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/context"
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/test"
@@ -19,7 +20,7 @@ import (
 )
 
 func TestRepoEdit(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 
 	ctx := test.MockContext(t, "user2/repo1")
 	test.LoadRepo(t, ctx, 1)
@@ -66,7 +67,7 @@ func TestRepoEdit(t *testing.T) {
 }
 
 func TestRepoEditNameChange(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 
 	ctx := test.MockContext(t, "user2/repo1")
 	test.LoadRepo(t, ctx, 1)
diff --git a/routers/web/admin/main_test.go b/routers/web/admin/main_test.go
index cfdefdb1b4..e41d8fea75 100644
--- a/routers/web/admin/main_test.go
+++ b/routers/web/admin/main_test.go
@@ -8,9 +8,9 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", "..", ".."))
+	unittest.MainTest(m, filepath.Join("..", "..", ".."))
 }
diff --git a/routers/web/admin/users_test.go b/routers/web/admin/users_test.go
index 022d8f662c..62b35ea286 100644
--- a/routers/web/admin/users_test.go
+++ b/routers/web/admin/users_test.go
@@ -9,6 +9,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/setting"
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/test"
@@ -20,7 +21,7 @@ import (
 
 func TestNewUserPost_MustChangePassword(t *testing.T) {
 
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "admin/users/new")
 
 	u := db.AssertExistsAndLoadBean(t, &models.User{
@@ -57,7 +58,7 @@ func TestNewUserPost_MustChangePassword(t *testing.T) {
 }
 
 func TestNewUserPost_MustChangePasswordFalse(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "admin/users/new")
 
 	u := db.AssertExistsAndLoadBean(t, &models.User{
@@ -94,7 +95,7 @@ func TestNewUserPost_MustChangePasswordFalse(t *testing.T) {
 }
 
 func TestNewUserPost_InvalidEmail(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "admin/users/new")
 
 	u := db.AssertExistsAndLoadBean(t, &models.User{
@@ -124,7 +125,7 @@ func TestNewUserPost_InvalidEmail(t *testing.T) {
 }
 
 func TestNewUserPost_VisibilityDefaultPublic(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "admin/users/new")
 
 	u := db.AssertExistsAndLoadBean(t, &models.User{
@@ -162,7 +163,7 @@ func TestNewUserPost_VisibilityDefaultPublic(t *testing.T) {
 }
 
 func TestNewUserPost_VisibilityPrivate(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "admin/users/new")
 
 	u := db.AssertExistsAndLoadBean(t, &models.User{
diff --git a/routers/web/repo/editor_test.go b/routers/web/repo/editor_test.go
index 8ab1fe1ee8..77f94ff550 100644
--- a/routers/web/repo/editor_test.go
+++ b/routers/web/repo/editor_test.go
@@ -7,7 +7,7 @@ package repo
 import (
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/test"
 
@@ -15,7 +15,7 @@ import (
 )
 
 func TestCleanUploadName(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 
 	var kases = map[string]string{
 		".git/refs/master":               "",
@@ -41,7 +41,7 @@ func TestCleanUploadName(t *testing.T) {
 }
 
 func TestGetUniquePatchBranchName(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1")
 	ctx.SetParams(":id", "1")
 	test.LoadRepo(t, ctx, 1)
@@ -56,7 +56,7 @@ func TestGetUniquePatchBranchName(t *testing.T) {
 }
 
 func TestGetClosestParentWithFiles(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1")
 	ctx.SetParams(":id", "1")
 	test.LoadRepo(t, ctx, 1)
diff --git a/routers/web/repo/issue_label_test.go b/routers/web/repo/issue_label_test.go
index 8c3caabe17..98fa9eb968 100644
--- a/routers/web/repo/issue_label_test.go
+++ b/routers/web/repo/issue_label_test.go
@@ -11,6 +11,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/test"
 	"code.gitea.io/gitea/modules/web"
 	"code.gitea.io/gitea/services/forms"
@@ -30,7 +31,7 @@ func int64SliceToCommaSeparated(a []int64) string {
 }
 
 func TestInitializeLabels(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1/labels/initialize")
 	test.LoadUser(t, ctx, 2)
 	test.LoadRepo(t, ctx, 2)
@@ -46,7 +47,7 @@ func TestInitializeLabels(t *testing.T) {
 }
 
 func TestRetrieveLabels(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	for _, testCase := range []struct {
 		RepoID           int64
 		Sort             string
@@ -73,7 +74,7 @@ func TestRetrieveLabels(t *testing.T) {
 }
 
 func TestNewLabel(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1/labels/edit")
 	test.LoadUser(t, ctx, 2)
 	test.LoadRepo(t, ctx, 1)
@@ -91,7 +92,7 @@ func TestNewLabel(t *testing.T) {
 }
 
 func TestUpdateLabel(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1/labels/edit")
 	test.LoadUser(t, ctx, 2)
 	test.LoadRepo(t, ctx, 1)
@@ -111,7 +112,7 @@ func TestUpdateLabel(t *testing.T) {
 }
 
 func TestDeleteLabel(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1/labels/delete")
 	test.LoadUser(t, ctx, 2)
 	test.LoadRepo(t, ctx, 1)
@@ -124,7 +125,7 @@ func TestDeleteLabel(t *testing.T) {
 }
 
 func TestUpdateIssueLabel_Clear(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1/issues/labels")
 	test.LoadUser(t, ctx, 2)
 	test.LoadRepo(t, ctx, 1)
@@ -149,7 +150,7 @@ func TestUpdateIssueLabel_Toggle(t *testing.T) {
 		{"toggle", []int64{1, 3}, 1, false},
 		{"toggle", []int64{1, 2}, 2, true},
 	} {
-		db.PrepareTestEnv(t)
+		unittest.PrepareTestEnv(t)
 		ctx := test.MockContext(t, "user2/repo1/issues/labels")
 		test.LoadUser(t, ctx, 2)
 		test.LoadRepo(t, ctx, 1)
diff --git a/routers/web/repo/main_test.go b/routers/web/repo/main_test.go
index 8322567249..81e3a8e281 100644
--- a/routers/web/repo/main_test.go
+++ b/routers/web/repo/main_test.go
@@ -8,9 +8,9 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", "..", ".."))
+	unittest.MainTest(m, filepath.Join("..", "..", ".."))
 }
diff --git a/routers/web/repo/projects_test.go b/routers/web/repo/projects_test.go
index d3b78cc775..62fb045740 100644
--- a/routers/web/repo/projects_test.go
+++ b/routers/web/repo/projects_test.go
@@ -7,14 +7,14 @@ package repo
 import (
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/test"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestCheckProjectBoardChangePermissions(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1/projects/1/2")
 	test.LoadUser(t, ctx, 2)
 	test.LoadRepo(t, ctx, 1)
diff --git a/routers/web/repo/release_test.go b/routers/web/repo/release_test.go
index 7ac49c012f..ff54232da7 100644
--- a/routers/web/repo/release_test.go
+++ b/routers/web/repo/release_test.go
@@ -9,6 +9,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/test"
 	"code.gitea.io/gitea/modules/web"
 	"code.gitea.io/gitea/services/forms"
@@ -44,7 +45,7 @@ func TestNewReleasePost(t *testing.T) {
 			},
 		},
 	} {
-		db.PrepareTestEnv(t)
+		unittest.PrepareTestEnv(t)
 
 		ctx := test.MockContext(t, "user2/repo1/releases/new")
 		test.LoadUser(t, ctx, 2)
diff --git a/routers/web/repo/settings_test.go b/routers/web/repo/settings_test.go
index a3ed271cce..78426f5b79 100644
--- a/routers/web/repo/settings_test.go
+++ b/routers/web/repo/settings_test.go
@@ -11,6 +11,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/context"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/test"
@@ -43,7 +44,7 @@ func TestAddReadOnlyDeployKey(t *testing.T) {
 	} else {
 		return
 	}
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 
 	ctx := test.MockContext(t, "user2/repo1/settings/keys")
 
@@ -72,7 +73,7 @@ func TestAddReadWriteOnlyDeployKey(t *testing.T) {
 		return
 	}
 
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 
 	ctx := test.MockContext(t, "user2/repo1/settings/keys")
 
@@ -97,7 +98,7 @@ func TestAddReadWriteOnlyDeployKey(t *testing.T) {
 
 func TestCollaborationPost(t *testing.T) {
 
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1/issues/labels")
 	test.LoadUser(t, ctx, 2)
 	test.LoadUser(t, ctx, 4)
@@ -133,7 +134,7 @@ func TestCollaborationPost(t *testing.T) {
 
 func TestCollaborationPost_InactiveUser(t *testing.T) {
 
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1/issues/labels")
 	test.LoadUser(t, ctx, 2)
 	test.LoadUser(t, ctx, 9)
@@ -157,7 +158,7 @@ func TestCollaborationPost_InactiveUser(t *testing.T) {
 
 func TestCollaborationPost_AddCollaboratorTwice(t *testing.T) {
 
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1/issues/labels")
 	test.LoadUser(t, ctx, 2)
 	test.LoadUser(t, ctx, 4)
@@ -199,7 +200,7 @@ func TestCollaborationPost_AddCollaboratorTwice(t *testing.T) {
 
 func TestCollaborationPost_NonExistentUser(t *testing.T) {
 
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "user2/repo1/issues/labels")
 	test.LoadUser(t, ctx, 2)
 	test.LoadRepo(t, ctx, 1)
@@ -221,7 +222,7 @@ func TestCollaborationPost_NonExistentUser(t *testing.T) {
 }
 
 func TestAddTeamPost(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "org26/repo43")
 
 	ctx.Req.Form.Set("team", "team11")
@@ -261,7 +262,7 @@ func TestAddTeamPost(t *testing.T) {
 }
 
 func TestAddTeamPost_NotAllowed(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "org26/repo43")
 
 	ctx.Req.Form.Set("team", "team11")
@@ -302,7 +303,7 @@ func TestAddTeamPost_NotAllowed(t *testing.T) {
 }
 
 func TestAddTeamPost_AddTeamTwice(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "org26/repo43")
 
 	ctx.Req.Form.Set("team", "team11")
@@ -343,7 +344,7 @@ func TestAddTeamPost_AddTeamTwice(t *testing.T) {
 }
 
 func TestAddTeamPost_NonExistentTeam(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "org26/repo43")
 
 	ctx.Req.Form.Set("team", "team-non-existent")
@@ -376,7 +377,7 @@ func TestAddTeamPost_NonExistentTeam(t *testing.T) {
 }
 
 func TestDeleteTeam(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	ctx := test.MockContext(t, "org3/team1/repo3")
 
 	ctx.Req.Form.Set("id", "2")
diff --git a/routers/web/repo/wiki_test.go b/routers/web/repo/wiki_test.go
index 14cb893d46..cf49f19afe 100644
--- a/routers/web/repo/wiki_test.go
+++ b/routers/web/repo/wiki_test.go
@@ -10,7 +10,7 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/test"
 	"code.gitea.io/gitea/modules/web"
@@ -74,7 +74,7 @@ func assertPagesMetas(t *testing.T, expectedNames []string, metas interface{}) {
 }
 
 func TestWiki(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 
 	ctx := test.MockContext(t, "user2/repo1/wiki/_pages")
 	ctx.SetParams(":page", "Home")
@@ -86,7 +86,7 @@ func TestWiki(t *testing.T) {
 }
 
 func TestWikiPages(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 
 	ctx := test.MockContext(t, "user2/repo1/wiki/_pages")
 	test.LoadRepo(t, ctx, 1)
@@ -96,7 +96,7 @@ func TestWikiPages(t *testing.T) {
 }
 
 func TestNewWiki(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 
 	ctx := test.MockContext(t, "user2/repo1/wiki/_new")
 	test.LoadUser(t, ctx, 2)
@@ -111,7 +111,7 @@ func TestNewWikiPost(t *testing.T) {
 		"New page",
 		"&&&&",
 	} {
-		db.PrepareTestEnv(t)
+		unittest.PrepareTestEnv(t)
 
 		ctx := test.MockContext(t, "user2/repo1/wiki/_new")
 		test.LoadUser(t, ctx, 2)
@@ -129,7 +129,7 @@ func TestNewWikiPost(t *testing.T) {
 }
 
 func TestNewWikiPost_ReservedName(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 
 	ctx := test.MockContext(t, "user2/repo1/wiki/_new")
 	test.LoadUser(t, ctx, 2)
@@ -146,7 +146,7 @@ func TestNewWikiPost_ReservedName(t *testing.T) {
 }
 
 func TestEditWiki(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 
 	ctx := test.MockContext(t, "user2/repo1/wiki/_edit/Home")
 	ctx.SetParams(":page", "Home")
@@ -163,7 +163,7 @@ func TestEditWikiPost(t *testing.T) {
 		"Home",
 		"New/<page>",
 	} {
-		db.PrepareTestEnv(t)
+		unittest.PrepareTestEnv(t)
 		ctx := test.MockContext(t, "user2/repo1/wiki/_new/Home")
 		ctx.SetParams(":page", "Home")
 		test.LoadUser(t, ctx, 2)
@@ -184,7 +184,7 @@ func TestEditWikiPost(t *testing.T) {
 }
 
 func TestDeleteWikiPagePost(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 
 	ctx := test.MockContext(t, "user2/repo1/wiki/Home/delete")
 	test.LoadUser(t, ctx, 2)
@@ -203,7 +203,7 @@ func TestWikiRaw(t *testing.T) {
 		"Page With Spaced Name.md": "text/plain; charset=utf-8",
 		"Page-With-Spaced-Name.md": "text/plain; charset=utf-8",
 	} {
-		db.PrepareTestEnv(t)
+		unittest.PrepareTestEnv(t)
 
 		ctx := test.MockContext(t, "user2/repo1/wiki/raw/"+filepath)
 		ctx.SetParams("*", filepath)
diff --git a/routers/web/user/home_test.go b/routers/web/user/home_test.go
index daf473b270..cd599abd04 100644
--- a/routers/web/user/home_test.go
+++ b/routers/web/user/home_test.go
@@ -9,7 +9,7 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/test"
 
@@ -19,7 +19,7 @@ import (
 func TestArchivedIssues(t *testing.T) {
 	// Arrange
 	setting.UI.IssuePagingNum = 1
-	assert.NoError(t, db.LoadFixtures())
+	assert.NoError(t, unittest.LoadFixtures())
 
 	ctx := test.MockContext(t, "issues")
 	test.LoadUser(t, ctx, 30)
@@ -52,7 +52,7 @@ func TestArchivedIssues(t *testing.T) {
 
 func TestIssues(t *testing.T) {
 	setting.UI.IssuePagingNum = 1
-	assert.NoError(t, db.LoadFixtures())
+	assert.NoError(t, unittest.LoadFixtures())
 
 	ctx := test.MockContext(t, "issues")
 	test.LoadUser(t, ctx, 2)
@@ -68,7 +68,7 @@ func TestIssues(t *testing.T) {
 
 func TestPulls(t *testing.T) {
 	setting.UI.IssuePagingNum = 20
-	assert.NoError(t, db.LoadFixtures())
+	assert.NoError(t, unittest.LoadFixtures())
 
 	ctx := test.MockContext(t, "pulls")
 	test.LoadUser(t, ctx, 2)
@@ -81,7 +81,7 @@ func TestPulls(t *testing.T) {
 
 func TestMilestones(t *testing.T) {
 	setting.UI.IssuePagingNum = 1
-	assert.NoError(t, db.LoadFixtures())
+	assert.NoError(t, unittest.LoadFixtures())
 
 	ctx := test.MockContext(t, "milestones")
 	test.LoadUser(t, ctx, 2)
@@ -100,7 +100,7 @@ func TestMilestones(t *testing.T) {
 
 func TestMilestonesForSpecificRepo(t *testing.T) {
 	setting.UI.IssuePagingNum = 1
-	assert.NoError(t, db.LoadFixtures())
+	assert.NoError(t, unittest.LoadFixtures())
 
 	ctx := test.MockContext(t, "milestones")
 	test.LoadUser(t, ctx, 2)
diff --git a/routers/web/user/main_test.go b/routers/web/user/main_test.go
index 272e4b8b21..77b48d89fb 100644
--- a/routers/web/user/main_test.go
+++ b/routers/web/user/main_test.go
@@ -8,9 +8,9 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", "..", ".."))
+	unittest.MainTest(m, filepath.Join("..", "..", ".."))
 }
diff --git a/routers/web/user/oauth_test.go b/routers/web/user/oauth_test.go
index 27d339b778..e0c1bf4e77 100644
--- a/routers/web/user/oauth_test.go
+++ b/routers/web/user/oauth_test.go
@@ -10,6 +10,7 @@ import (
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/models/login"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/services/auth/source/oauth2"
 
 	"github.com/golang-jwt/jwt"
@@ -41,7 +42,7 @@ func createAndParseToken(t *testing.T, grant *login.OAuth2Grant) *oauth2.OIDCTok
 }
 
 func TestNewAccessTokenResponse_OIDCToken(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	grants, err := login.GetOAuth2GrantsByUserID(3)
 	assert.NoError(t, err)
diff --git a/routers/web/user/setting/account_test.go b/routers/web/user/setting/account_test.go
index bfb7ac4872..cd5c77795e 100644
--- a/routers/web/user/setting/account_test.go
+++ b/routers/web/user/setting/account_test.go
@@ -8,7 +8,7 @@ import (
 	"net/http"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/test"
 	"code.gitea.io/gitea/modules/web"
@@ -81,7 +81,7 @@ func TestChangePassword(t *testing.T) {
 			PasswordComplexity: pcLU,
 		},
 	} {
-		db.PrepareTestEnv(t)
+		unittest.PrepareTestEnv(t)
 		ctx := test.MockContext(t, "user/settings/security")
 		test.LoadUser(t, ctx, 2)
 		test.LoadRepo(t, ctx, 1)
diff --git a/routers/web/user/setting/main_test.go b/routers/web/user/setting/main_test.go
index a0fbe55ee1..b6ed7f5b18 100644
--- a/routers/web/user/setting/main_test.go
+++ b/routers/web/user/setting/main_test.go
@@ -8,9 +8,9 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", "..", "..", ".."))
+	unittest.MainTest(m, filepath.Join("..", "..", "..", ".."))
 }
diff --git a/services/archiver/archiver_test.go b/services/archiver/archiver_test.go
index 94b0423d9b..67484fdc78 100644
--- a/services/archiver/archiver_test.go
+++ b/services/archiver/archiver_test.go
@@ -9,14 +9,14 @@ import (
 	"testing"
 	"time"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/test"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."))
+	unittest.MainTest(m, filepath.Join("..", ".."))
 }
 
 func waitForCount(t *testing.T, num int) {
@@ -24,7 +24,7 @@ func waitForCount(t *testing.T, num int) {
 }
 
 func TestArchive_Basic(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	ctx := test.MockContext(t, "user27/repo49")
 	firstCommit, secondCommit := "51f84af23134", "aacbdfe9e1c4"
diff --git a/services/attachment/attachment_test.go b/services/attachment/attachment_test.go
index 3e9e55a8f2..f44c4f9b5e 100644
--- a/services/attachment/attachment_test.go
+++ b/services/attachment/attachment_test.go
@@ -11,16 +11,17 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."))
+	unittest.MainTest(m, filepath.Join("..", ".."))
 }
 
 func TestUploadAttachment(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user := db.AssertExistsAndLoadBean(t, &models.User{ID: 1}).(*models.User)
 
diff --git a/services/gitdiff/gitdiff_test.go b/services/gitdiff/gitdiff_test.go
index 6decb59b64..359e2e8c66 100644
--- a/services/gitdiff/gitdiff_test.go
+++ b/services/gitdiff/gitdiff_test.go
@@ -14,6 +14,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/highlight"
 	"code.gitea.io/gitea/modules/json"
@@ -493,7 +494,7 @@ func setupDefaultDiff() *Diff {
 	}
 }
 func TestDiff_LoadComments(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	issue := db.AssertExistsAndLoadBean(t, &models.Issue{ID: 2}).(*models.Issue)
 	user := db.AssertExistsAndLoadBean(t, &models.User{ID: 1}).(*models.User)
diff --git a/services/gitdiff/main_test.go b/services/gitdiff/main_test.go
index 1b83cbd684..8c76e7e153 100644
--- a/services/gitdiff/main_test.go
+++ b/services/gitdiff/main_test.go
@@ -8,9 +8,9 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."))
+	unittest.MainTest(m, filepath.Join("..", ".."))
 }
diff --git a/services/issue/assignee_test.go b/services/issue/assignee_test.go
index 5684ed6d89..b0bbe42273 100644
--- a/services/issue/assignee_test.go
+++ b/services/issue/assignee_test.go
@@ -8,12 +8,12 @@ import (
 	"testing"
 
 	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestDeleteNotPassedAssignee(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	// Fake issue with assignees
 	issue, err := models.GetIssueWithAttrsByID(1)
diff --git a/services/issue/label_test.go b/services/issue/label_test.go
index 8a3a77ecb0..758ef98b27 100644
--- a/services/issue/label_test.go
+++ b/services/issue/label_test.go
@@ -9,6 +9,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -24,7 +25,7 @@ func TestIssue_AddLabels(t *testing.T) {
 		{2, []int64{}, 1},     // pull-request, empty
 	}
 	for _, test := range tests {
-		assert.NoError(t, db.PrepareTestDatabase())
+		assert.NoError(t, unittest.PrepareTestDatabase())
 		issue := db.AssertExistsAndLoadBean(t, &models.Issue{ID: test.issueID}).(*models.Issue)
 		labels := make([]*models.Label, len(test.labelIDs))
 		for i, labelID := range test.labelIDs {
@@ -50,7 +51,7 @@ func TestIssue_AddLabel(t *testing.T) {
 		{2, 1, 2}, // pull-request, already-added label
 	}
 	for _, test := range tests {
-		assert.NoError(t, db.PrepareTestDatabase())
+		assert.NoError(t, unittest.PrepareTestDatabase())
 		issue := db.AssertExistsAndLoadBean(t, &models.Issue{ID: test.issueID}).(*models.Issue)
 		label := db.AssertExistsAndLoadBean(t, &models.Label{ID: test.labelID}).(*models.Label)
 		doer := db.AssertExistsAndLoadBean(t, &models.User{ID: test.doerID}).(*models.User)
diff --git a/services/issue/main_test.go b/services/issue/main_test.go
index 1349837949..cbcfd08a49 100644
--- a/services/issue/main_test.go
+++ b/services/issue/main_test.go
@@ -8,9 +8,9 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."))
+	unittest.MainTest(m, filepath.Join("..", ".."))
 }
diff --git a/services/mailer/mail_test.go b/services/mailer/mail_test.go
index cd730a13a4..aaa18681b8 100644
--- a/services/mailer/mail_test.go
+++ b/services/mailer/mail_test.go
@@ -12,6 +12,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/setting"
 
 	"github.com/stretchr/testify/assert"
@@ -41,7 +42,7 @@ const bodyTpl = `
 `
 
 func prepareMailerTest(t *testing.T) (doer *models.User, repo *models.Repository, issue *models.Issue, comment *models.Comment) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	var mailService = setting.Mailer{
 		From: "test@gitea.com",
 	}
diff --git a/services/mailer/main_test.go b/services/mailer/main_test.go
index 2fbe9c54a9..ae3b2c12b4 100644
--- a/services/mailer/main_test.go
+++ b/services/mailer/main_test.go
@@ -8,9 +8,9 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."))
+	unittest.MainTest(m, filepath.Join("..", ".."))
 }
diff --git a/services/pull/check_test.go b/services/pull/check_test.go
index 8beea3d56d..bc3df0a4bb 100644
--- a/services/pull/check_test.go
+++ b/services/pull/check_test.go
@@ -12,13 +12,14 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/queue"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestPullRequest_AddToTaskQueue(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	idChan := make(chan int64, 10)
 
diff --git a/services/pull/main_test.go b/services/pull/main_test.go
index c8d3394e8e..6059a291ad 100644
--- a/services/pull/main_test.go
+++ b/services/pull/main_test.go
@@ -9,9 +9,9 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."))
+	unittest.MainTest(m, filepath.Join("..", ".."))
 }
diff --git a/services/release/release_test.go b/services/release/release_test.go
index e53e4c935b..b855ec6647 100644
--- a/services/release/release_test.go
+++ b/services/release/release_test.go
@@ -12,6 +12,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/services/attachment"
 
@@ -19,11 +20,11 @@ import (
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."))
+	unittest.MainTest(m, filepath.Join("..", ".."))
 }
 
 func TestRelease_Create(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user := db.AssertExistsAndLoadBean(t, &models.User{ID: 2}).(*models.User)
 	repo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 1}).(*models.Repository)
@@ -127,7 +128,7 @@ func TestRelease_Create(t *testing.T) {
 }
 
 func TestRelease_Update(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user := db.AssertExistsAndLoadBean(t, &models.User{ID: 2}).(*models.User)
 	repo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 1}).(*models.Repository)
@@ -269,7 +270,7 @@ func TestRelease_Update(t *testing.T) {
 }
 
 func TestRelease_createTag(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user := db.AssertExistsAndLoadBean(t, &models.User{ID: 2}).(*models.User)
 	repo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 1}).(*models.Repository)
@@ -352,7 +353,7 @@ func TestRelease_createTag(t *testing.T) {
 }
 
 func TestCreateNewTag(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	user := db.AssertExistsAndLoadBean(t, &models.User{ID: 2}).(*models.User)
 	repo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 1}).(*models.Repository)
 
diff --git a/services/repository/main_test.go b/services/repository/main_test.go
index 91d0d36ca0..262d339481 100644
--- a/services/repository/main_test.go
+++ b/services/repository/main_test.go
@@ -8,9 +8,9 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."))
+	unittest.MainTest(m, filepath.Join("..", ".."))
 }
diff --git a/services/repository/transfer_test.go b/services/repository/transfer_test.go
index 40ccfdfb52..9ce60f30ee 100644
--- a/services/repository/transfer_test.go
+++ b/services/repository/transfer_test.go
@@ -10,6 +10,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/notification"
 	"code.gitea.io/gitea/modules/notification/action"
 	"code.gitea.io/gitea/modules/util"
@@ -28,7 +29,7 @@ func registerNotifier() {
 func TestTransferOwnership(t *testing.T) {
 	registerNotifier()
 
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	doer := db.AssertExistsAndLoadBean(t, &models.User{ID: 2}).(*models.User)
 	repo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 3}).(*models.Repository)
@@ -55,7 +56,7 @@ func TestTransferOwnership(t *testing.T) {
 }
 
 func TestStartRepositoryTransferSetPermission(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	doer := db.AssertExistsAndLoadBean(t, &models.User{ID: 3}).(*models.User)
 	recipient := db.AssertExistsAndLoadBean(t, &models.User{ID: 5}).(*models.User)
diff --git a/services/webhook/main_test.go b/services/webhook/main_test.go
index 7aef4b3a51..fc58f72565 100644
--- a/services/webhook/main_test.go
+++ b/services/webhook/main_test.go
@@ -8,9 +8,9 @@ import (
 	"path/filepath"
 	"testing"
 
-	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."))
+	unittest.MainTest(m, filepath.Join("..", ".."))
 }
diff --git a/services/webhook/webhook_test.go b/services/webhook/webhook_test.go
index 75f19e50ce..276d1e78cd 100644
--- a/services/webhook/webhook_test.go
+++ b/services/webhook/webhook_test.go
@@ -9,6 +9,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	webhook_model "code.gitea.io/gitea/models/webhook"
 	api "code.gitea.io/gitea/modules/structs"
 	"github.com/stretchr/testify/assert"
@@ -27,7 +28,7 @@ func TestWebhook_GetSlackHook(t *testing.T) {
 }
 
 func TestPrepareWebhooks(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 1}).(*models.Repository)
 	hookTasks := []*webhook_model.HookTask{
@@ -43,7 +44,7 @@ func TestPrepareWebhooks(t *testing.T) {
 }
 
 func TestPrepareWebhooksBranchFilterMatch(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 2}).(*models.Repository)
 	hookTasks := []*webhook_model.HookTask{
@@ -60,7 +61,7 @@ func TestPrepareWebhooksBranchFilterMatch(t *testing.T) {
 }
 
 func TestPrepareWebhooksBranchFilterNoMatch(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 2}).(*models.Repository)
 	hookTasks := []*webhook_model.HookTask{
diff --git a/services/wiki/wiki_test.go b/services/wiki/wiki_test.go
index d6a65cc23a..7ecd3bb04e 100644
--- a/services/wiki/wiki_test.go
+++ b/services/wiki/wiki_test.go
@@ -11,6 +11,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/util"
 
@@ -18,7 +19,7 @@ import (
 )
 
 func TestMain(m *testing.M) {
-	db.MainTest(m, filepath.Join("..", ".."))
+	unittest.MainTest(m, filepath.Join("..", ".."))
 }
 
 func TestWikiNameToSubURL(t *testing.T) {
@@ -110,7 +111,7 @@ func TestWikiNameToFilenameToName(t *testing.T) {
 }
 
 func TestRepository_InitWiki(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	// repo1 already has a wiki
 	repo1 := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 1}).(*models.Repository)
 	assert.NoError(t, InitWiki(repo1))
@@ -122,7 +123,7 @@ func TestRepository_InitWiki(t *testing.T) {
 }
 
 func TestRepository_AddWikiPage(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 	const wikiContent = "This is the wiki content"
 	const commitMsg = "Commit message"
 	repo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 1}).(*models.Repository)
@@ -166,7 +167,7 @@ func TestRepository_AddWikiPage(t *testing.T) {
 }
 
 func TestRepository_EditWikiPage(t *testing.T) {
-	assert.NoError(t, db.PrepareTestDatabase())
+	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	const newWikiContent = "This is the new content"
 	const commitMsg = "Commit message"
@@ -177,7 +178,7 @@ func TestRepository_EditWikiPage(t *testing.T) {
 		"New home",
 		"New/name/with/slashes",
 	} {
-		db.PrepareTestEnv(t)
+		unittest.PrepareTestEnv(t)
 		assert.NoError(t, EditWikiPage(doer, repo, "Home", newWikiName, newWikiContent, commitMsg))
 
 		// Now need to show that the page has been added:
@@ -199,7 +200,7 @@ func TestRepository_EditWikiPage(t *testing.T) {
 }
 
 func TestRepository_DeleteWikiPage(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	repo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 1}).(*models.Repository)
 	doer := db.AssertExistsAndLoadBean(t, &models.User{ID: 2}).(*models.User)
 	assert.NoError(t, DeleteWikiPage(doer, repo, "Home"))
@@ -216,7 +217,7 @@ func TestRepository_DeleteWikiPage(t *testing.T) {
 }
 
 func TestPrepareWikiFileName(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 	repo := db.AssertExistsAndLoadBean(t, &models.Repository{ID: 1}).(*models.Repository)
 	gitRepo, err := git.OpenRepository(repo.WikiPath())
 	defer gitRepo.Close()
@@ -267,7 +268,7 @@ func TestPrepareWikiFileName(t *testing.T) {
 }
 
 func TestPrepareWikiFileName_FirstPage(t *testing.T) {
-	db.PrepareTestEnv(t)
+	unittest.PrepareTestEnv(t)
 
 	// Now create a temporaryDirectory
 	tmpDir, err := os.MkdirTemp("", "empty-wiki")