Allow adding new files to an empty repo (#24164)

![image](https://user-images.githubusercontent.com/2114189/232561612-2bfcfd0a-fc04-47ba-965f-5d0bcea46c54.png)

9 files changed, 44 insertions, 25 deletions

diff --git a/models/db/iterate_test.go b/models/db/iterate_test.go
index f9f1213721..5362f34075 100644
--- a/models/db/iterate_test.go
+++ b/models/db/iterate_test.go
@@ -19,13 +19,16 @@ func TestIterate(t *testing.T) {
 	xe := unittest.GetXORMEngine()
 	assert.NoError(t, xe.Sync(&repo_model.RepoUnit{}))
 
-	var repoCnt int
-	err := db.Iterate(db.DefaultContext, nil, func(ctx context.Context, repo *repo_model.RepoUnit) error {
-		repoCnt++
+	cnt, err := db.GetEngine(db.DefaultContext).Count(&repo_model.RepoUnit{})
+	assert.NoError(t, err)
+
+	var repoUnitCnt int
+	err = db.Iterate(db.DefaultContext, nil, func(ctx context.Context, repo *repo_model.RepoUnit) error {
+		repoUnitCnt++
 		return nil
 	})
 	assert.NoError(t, err)
-	assert.EqualValues(t, 89, repoCnt)
+	assert.EqualValues(t, cnt, repoUnitCnt)
 
 	err = db.Iterate(db.DefaultContext, nil, func(ctx context.Context, repoUnit *repo_model.RepoUnit) error {
 		reopUnit2 := repo_model.RepoUnit{ID: repoUnit.ID}
diff --git a/models/db/list_test.go b/models/db/list_test.go
index 195450b1e7..6b9bebd64b 100644
--- a/models/db/list_test.go
+++ b/models/db/list_test.go
@@ -31,15 +31,20 @@ func TestFind(t *testing.T) {
 	xe := unittest.GetXORMEngine()
 	assert.NoError(t, xe.Sync(&repo_model.RepoUnit{}))
 
+	var repoUnitCount int
+	_, err := db.GetEngine(db.DefaultContext).SQL("SELECT COUNT(*) FROM repo_unit").Get(&repoUnitCount)
+	assert.NoError(t, err)
+	assert.NotEmpty(t, repoUnitCount)
+
 	opts := mockListOptions{}
 	var repoUnits []repo_model.RepoUnit
-	err := db.Find(db.DefaultContext, &opts, &repoUnits)
+	err = db.Find(db.DefaultContext, &opts, &repoUnits)
 	assert.NoError(t, err)
-	assert.EqualValues(t, 89, len(repoUnits))
+	assert.EqualValues(t, repoUnitCount, len(repoUnits))
 
 	cnt, err := db.Count(db.DefaultContext, &opts, new(repo_model.RepoUnit))
 	assert.NoError(t, err)
-	assert.EqualValues(t, 89, cnt)
+	assert.EqualValues(t, repoUnitCount, cnt)
 
 	repoUnits = make([]repo_model.RepoUnit, 0, 10)
 	newCnt, err := db.FindAndCount(db.DefaultContext, &opts, &repoUnits)
diff --git a/models/dbfs/dbfs_test.go b/models/dbfs/dbfs_test.go
index 30aa6463c5..300758c623 100644
--- a/models/dbfs/dbfs_test.go
+++ b/models/dbfs/dbfs_test.go
@@ -12,8 +12,6 @@ import (
 	"code.gitea.io/gitea/models/db"
 
 	"github.com/stretchr/testify/assert"
-
-	_ "github.com/mattn/go-sqlite3"
 )
 
 func changeDefaultFileBlockSize(n int64) (restore func()) {
diff --git a/models/fixtures/repo_unit.yml b/models/fixtures/repo_unit.yml
index 184be2d861..5bb974a7d7 100644
--- a/models/fixtures/repo_unit.yml
+++ b/models/fixtures/repo_unit.yml
@@ -601,3 +601,9 @@
   repo_id: 57
   type: 5
   created_unix: 946684810
+
+-
+  id: 90
+  repo_id: 52
+  type: 1
+  created_unix: 946684810
diff --git a/models/fixtures/repository.yml b/models/fixtures/repository.yml
index 496d1a3e7a..ef7730780f 100644
--- a/models/fixtures/repository.yml
+++ b/models/fixtures/repository.yml
@@ -1560,6 +1560,7 @@
   owner_name: user30
   lower_name: empty
   name: empty
+  default_branch: master
   num_watches: 0
   num_stars: 0
   num_forks: 0
diff --git a/models/fixtures/user.yml b/models/fixtures/user.yml
index fce4a4bda0..eba33a7c36 100644
--- a/models/fixtures/user.yml
+++ b/models/fixtures/user.yml
@@ -1091,7 +1091,7 @@
   max_repo_creation: -1
   is_active: true
   is_admin: false
-  is_restricted: true
+  is_restricted: false
   allow_git_hook: false
   allow_import_local: false
   allow_create_organization: true
diff --git a/models/repo/repo.go b/models/repo/repo.go
index 3653dae015..266cbc288c 100644
--- a/models/repo/repo.go
+++ b/models/repo/repo.go
@@ -225,6 +225,12 @@ func (repo *Repository) IsBroken() bool {
 	return repo.Status == RepositoryBroken
 }
 
+// MarkAsBrokenEmpty marks the repo as broken and empty
+func (repo *Repository) MarkAsBrokenEmpty() {
+	repo.Status = RepositoryBroken
+	repo.IsEmpty = true
+}
+
 // AfterLoad is invoked from XORM after setting the values of all fields of this object.
 func (repo *Repository) AfterLoad() {
 	repo.NumOpenIssues = repo.NumIssues - repo.NumClosedIssues
@@ -729,7 +735,7 @@ func IsRepositoryExist(ctx context.Context, u *user_model.User, repoName string)
 		return false, err
 	}
 	isDir, err := util.IsDir(RepoPath(u.Name, repoName))
-	return has && isDir, err
+	return has || isDir, err
 }
 
 // GetTemplateRepo populates repo.TemplateRepo for a generated repository and
diff --git a/models/unittest/fixtures.go b/models/unittest/fixtures.go
index 545452a159..f7ee766731 100644
--- a/models/unittest/fixtures.go
+++ b/models/unittest/fixtures.go
@@ -17,7 +17,7 @@ import (
 	"xorm.io/xorm/schemas"
 )
 
-var fixtures *testfixtures.Loader
+var fixturesLoader *testfixtures.Loader
 
 // GetXORMEngine gets the XORM engine
 func GetXORMEngine(engine ...*xorm.Engine) (x *xorm.Engine) {
@@ -30,11 +30,11 @@ func GetXORMEngine(engine ...*xorm.Engine) (x *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
+	var fixtureOptionFiles func(*testfixtures.Loader) error
 	if opts.Dir != "" {
-		testfiles = testfixtures.Directory(opts.Dir)
+		fixtureOptionFiles = testfixtures.Directory(opts.Dir)
 	} else {
-		testfiles = testfixtures.Files(opts.Files...)
+		fixtureOptionFiles = testfixtures.Files(opts.Files...)
 	}
 	dialect := "unknown"
 	switch e.Dialect().URI().DBType {
@@ -54,14 +54,14 @@ func InitFixtures(opts FixturesOptions, engine ...*xorm.Engine) (err error) {
 		testfixtures.Database(e.DB().DB),
 		testfixtures.Dialect(dialect),
 		testfixtures.DangerousSkipTestDatabaseCheck(),
-		testfiles,
+		fixtureOptionFiles,
 	}
 
 	if e.Dialect().URI().DBType == schemas.POSTGRES {
 		loaderOptions = append(loaderOptions, testfixtures.SkipResetSequences())
 	}
 
-	fixtures, err = testfixtures.New(loaderOptions...)
+	fixturesLoader, err = testfixtures.New(loaderOptions...)
 	if err != nil {
 		return err
 	}
@@ -78,11 +78,9 @@ func InitFixtures(opts FixturesOptions, engine ...*xorm.Engine) (err error) {
 func LoadFixtures(engine ...*xorm.Engine) error {
 	e := GetXORMEngine(engine...)
 	var err error
-	// Database transaction conflicts could occur and result in ROLLBACK
-	// As a simple workaround, we just retry 20 times.
-	for i := 0; i < 20; i++ {
-		err = fixtures.Load()
-		if err == nil {
+	// (doubt) database transaction conflicts could occur and result in ROLLBACK? just try for a few times.
+	for i := 0; i < 5; i++ {
+		if err = fixturesLoader.Load(); err == nil {
 			break
 		}
 		time.Sleep(200 * time.Millisecond)
diff --git a/models/user/user_test.go b/models/user/user_test.go
index 8e78fee6b3..c2314d5c03 100644
--- a/models/user/user_test.go
+++ b/models/user/user_test.go
@@ -5,6 +5,7 @@ package user_test
 
 import (
 	"context"
+	"fmt"
 	"math/rand"
 	"strings"
 	"testing"
@@ -64,9 +65,10 @@ func TestSearchUsers(t *testing.T) {
 	testSuccess := func(opts *user_model.SearchUserOptions, expectedUserOrOrgIDs []int64) {
 		users, _, err := user_model.SearchUsers(opts)
 		assert.NoError(t, err)
-		if assert.Len(t, users, len(expectedUserOrOrgIDs), opts) {
+		cassText := fmt.Sprintf("ids: %v, opts: %v", expectedUserOrOrgIDs, opts)
+		if assert.Len(t, users, len(expectedUserOrOrgIDs), "case: %s", cassText) {
 			for i, expectedID := range expectedUserOrOrgIDs {
-				assert.EqualValues(t, expectedID, users[i].ID)
+				assert.EqualValues(t, expectedID, users[i].ID, "case: %s", cassText)
 			}
 		}
 	}
@@ -118,7 +120,7 @@ func TestSearchUsers(t *testing.T) {
 		[]int64{1})
 
 	testUserSuccess(&user_model.SearchUserOptions{ListOptions: db.ListOptions{Page: 1}, IsRestricted: util.OptionalBoolTrue},
-		[]int64{29, 30})
+		[]int64{29})
 
 	testUserSuccess(&user_model.SearchUserOptions{ListOptions: db.ListOptions{Page: 1}, IsProhibitLogin: util.OptionalBoolTrue},
 		[]int64{30})