tests: add coverage for models migration helpers (#18162)

They were previously not covered at all, either by integration tests or unit tests.

This PR also fixes a bug where the `num_comments` field was incorrectly set to include all types of comments.

It sets num_closed_issues: 0 as default in milestone unit test fixtures. If they are not set, Incr("num_closed_issues") will be a noop because the field is null.

3 files changed, 173 insertions, 1 deletions

diff --git a/models/fixtures/milestone.yml b/models/fixtures/milestone.yml
index 2cd994e63a..d439ce81cb 100644
--- a/models/fixtures/milestone.yml
+++ b/models/fixtures/milestone.yml
@@ -5,6 +5,7 @@
   content: content1
   is_closed: false
   num_issues: 1
+  num_closed_issues: 0
 
 -
   id: 2
@@ -13,6 +14,7 @@
   content: content2
   is_closed: false
   num_issues: 0
+  num_closed_issues: 0
 
 -
   id: 3
@@ -21,6 +23,7 @@
   content: content3
   is_closed: true
   num_issues: 1
+  num_closed_issues: 0
 
 -
   id: 4
@@ -29,6 +32,7 @@
   content: content random
   is_closed: false
   num_issues: 0
+  num_closed_issues: 0
 
 - 
   id: 5
@@ -37,3 +41,4 @@
   content: for testing with PRs
   is_closed: false
   num_issues: 0
+  num_closed_issues: 0
diff --git a/models/migrate.go b/models/migrate.go
index 07d2b0f2d9..ce529efc4b 100644
--- a/models/migrate.go
+++ b/models/migrate.go
@@ -166,7 +166,7 @@ func InsertIssueComments(comments []*Comment) error {
 	}
 
 	for issueID := range issueIDs {
-		if _, err := db.Exec(ctx, "UPDATE issue set num_comments = (SELECT count(*) FROM comment WHERE issue_id = ?) WHERE id = ?", issueID, issueID); err != nil {
+		if _, err := db.Exec(ctx, "UPDATE issue set num_comments = (SELECT count(*) FROM comment WHERE issue_id = ? AND `type`=?) WHERE id = ?", issueID, CommentTypeComment, issueID); err != nil {
 			return err
 		}
 	}
diff --git a/models/migrate_test.go b/models/migrate_test.go
new file mode 100644
index 0000000000..09433b6b41
--- /dev/null
+++ b/models/migrate_test.go
@@ -0,0 +1,167 @@
+// Copyright 2022 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 models
+
+import (
+	"testing"
+
+	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/models/unittest"
+	user_model "code.gitea.io/gitea/models/user"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestMigrate_InsertMilestones(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+	reponame := "repo1"
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{Name: reponame}).(*repo_model.Repository)
+	name := "milestonetest1"
+	ms := &Milestone{
+		RepoID: repo.ID,
+		Name:   name,
+	}
+	err := InsertMilestones(ms)
+	assert.NoError(t, err)
+	unittest.AssertExistsAndLoadBean(t, ms)
+	repoModified := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: repo.ID}).(*repo_model.Repository)
+	assert.EqualValues(t, repo.NumMilestones+1, repoModified.NumMilestones)
+
+	unittest.CheckConsistencyFor(t, &Milestone{})
+}
+
+func assertCreateIssues(t *testing.T, reponame string, isPull bool) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{Name: reponame}).(*repo_model.Repository)
+	owner := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: repo.OwnerID}).(*user_model.User)
+	label := unittest.AssertExistsAndLoadBean(t, &Label{ID: 1}).(*Label)
+	milestone := unittest.AssertExistsAndLoadBean(t, &Milestone{ID: 1}).(*Milestone)
+	assert.EqualValues(t, milestone.ID, 1)
+	reaction := &Reaction{
+		Type:   "heart",
+		UserID: owner.ID,
+	}
+
+	title := "issuetitle1"
+	var is = &Issue{
+		RepoID:      repo.ID,
+		MilestoneID: milestone.ID,
+		Repo:        repo,
+		Title:       title,
+		Content:     "issuecontent1",
+		IsPull:      isPull,
+		PosterID:    owner.ID,
+		Poster:      owner,
+		IsClosed:    true,
+		Labels:      []*Label{label},
+		Reactions:   []*Reaction{reaction},
+	}
+	err := InsertIssues(is)
+	assert.NoError(t, err)
+
+	i := unittest.AssertExistsAndLoadBean(t, &Issue{Title: title}).(*Issue)
+	unittest.AssertExistsAndLoadBean(t, &Reaction{Type: "heart", UserID: owner.ID, IssueID: i.ID})
+
+	labelModified := unittest.AssertExistsAndLoadBean(t, &Label{ID: 1}).(*Label)
+	assert.EqualValues(t, label.NumIssues+1, labelModified.NumIssues)
+	assert.EqualValues(t, label.NumClosedIssues+1, labelModified.NumClosedIssues)
+
+	milestoneModified := unittest.AssertExistsAndLoadBean(t, &Milestone{ID: milestone.ID}).(*Milestone)
+	assert.EqualValues(t, milestone.NumIssues+1, milestoneModified.NumIssues)
+	assert.EqualValues(t, milestone.NumClosedIssues+1, milestoneModified.NumClosedIssues)
+}
+
+func TestMigrate_CreateIssuesIsPullFalse(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+	reponame := "repo1"
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{Name: reponame}).(*repo_model.Repository)
+
+	assertCreateIssues(t, reponame, false)
+
+	repoModified := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: repo.ID}).(*repo_model.Repository)
+	assert.EqualValues(t, repo.NumIssues+1, repoModified.NumIssues)
+	assert.EqualValues(t, repo.NumClosedIssues+1, repoModified.NumClosedIssues)
+}
+
+func TestMigrate_CreateIssuesIsPullTrue(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+	reponame := "repo1"
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{Name: reponame}).(*repo_model.Repository)
+
+	assertCreateIssues(t, reponame, true)
+
+	repoModified := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: repo.ID}).(*repo_model.Repository)
+	assert.EqualValues(t, repo.NumPulls+1, repoModified.NumPulls)
+	assert.EqualValues(t, repo.NumClosedPulls+1, repoModified.NumClosedPulls)
+}
+
+func TestMigrate_InsertIssueComments(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+	issue := unittest.AssertExistsAndLoadBean(t, &Issue{ID: 1}).(*Issue)
+	_ = issue.LoadRepo()
+	owner := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: issue.Repo.OwnerID}).(*user_model.User)
+	reaction := &Reaction{
+		Type:   "heart",
+		UserID: owner.ID,
+	}
+
+	comment := &Comment{
+		PosterID:  owner.ID,
+		Poster:    owner,
+		IssueID:   issue.ID,
+		Issue:     issue,
+		Reactions: []*Reaction{reaction},
+	}
+
+	err := InsertIssueComments([]*Comment{comment})
+	assert.NoError(t, err)
+
+	issueModified := unittest.AssertExistsAndLoadBean(t, &Issue{ID: 1}).(*Issue)
+	assert.EqualValues(t, issue.NumComments+1, issueModified.NumComments)
+
+	unittest.CheckConsistencyFor(t, &Issue{})
+}
+
+func TestMigrate_InsertPullRequests(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+	reponame := "repo1"
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{Name: reponame}).(*repo_model.Repository)
+	owner := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: repo.OwnerID}).(*user_model.User)
+
+	var i = &Issue{
+		RepoID:   repo.ID,
+		Repo:     repo,
+		Title:    "title1",
+		Content:  "issuecontent1",
+		IsPull:   true,
+		PosterID: owner.ID,
+		Poster:   owner,
+	}
+
+	var p = &PullRequest{
+		Issue: i,
+	}
+
+	err := InsertPullRequests(p)
+	assert.NoError(t, err)
+
+	_ = unittest.AssertExistsAndLoadBean(t, &PullRequest{IssueID: i.ID}).(*PullRequest)
+
+	unittest.CheckConsistencyFor(t, &Issue{}, &PullRequest{})
+}
+
+func TestMigrate_InsertReleases(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+
+	a := &repo_model.Attachment{
+		UUID: "a0eebc91-9c0c-4ef7-bb6e-6bb9bd380a12",
+	}
+	r := &Release{
+		Attachments: []*repo_model.Attachment{a},
+	}
+
+	err := InsertReleases(r)
+	assert.NoError(t, err)
+}