add first integration function test

.woodpecker/.build.yaml

@@ -0,0 +1,38 @@
+---
+steps:
+  - name: build (prod)
+    image: woodpeckerci/plugin-docker-buildx
+    settings:
+      registry: git.ar21.de
+      username:
+        from_secret: REGISTRY_USER
+      password:
+        from_secret: REGISTRY_PASS
+      repo: git.ar21.de/tom/forkjo
+      platforms:
+        - linux/amd64
+      tags:
+        - latest
+        - ${CI_PIPELINE_NUMBER}
+    when:
+      - branch: forgejo
+        event: push
+
+  - name: build (experimental)
+    image: woodpeckerci/plugin-docker-buildx
+    settings:
+      registry: git.ar21.de
+      username:
+        from_secret: REGISTRY_USER
+      password:
+        from_secret: REGISTRY_PASS
+      repo: git.ar21.de/tom/forkjo
+      platforms:
+        - linux/amd64
+      tags:
+        - experimental
+        - experimental-${CI_PIPELINE_NUMBER}
+    when:
+      - branch:
+          exclude: forgejo
+        event: push

models/forgejo_migrations/migrate.go

@@ -82,6 +82,8 @@ var migrations = []*Migration{
 	NewMigration("Add SSH keypair to `pull_mirror` table", AddSSHKeypairToPushMirror),
 	// v22 -> v23
 	NewMigration("Add `legacy` to `web_authn_credential` table", AddLegacyToWebAuthnCredential),
+	// v23 -> v24
+	NewMigration("Add `delete_branch_after_merge` to `auto_merge` table", AddDeleteBranchAfterMergeToAutoMerge),
 }
 
 // GetCurrentDBVersion returns the current Forgejo database version.

models/forgejo_migrations/v23.go

@@ -0,0 +1,16 @@
+// Copyright 2024 The Forgejo Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package forgejo_migrations //nolint:revive
+
+import "xorm.io/xorm"
+
+// AddDeleteBranchAfterMergeToAutoMerge: add DeleteBranchAfterMerge column, setting existing rows to false
+func AddDeleteBranchAfterMergeToAutoMerge(x *xorm.Engine) error {
+	type AutoMerge struct {
+		ID                     int64 `xorm:"pk autoincr"`
+		DeleteBranchAfterMerge bool  `xorm:"NOT NULL DEFAULT false"`
+	}
+
+	return x.Sync(&AutoMerge{})
+}

models/pull/automerge.go

@@ -15,13 +15,14 @@ import (
 
 // AutoMerge represents a pull request scheduled for merging when checks succeed
 type AutoMerge struct {
-	ID          int64                 `xorm:"pk autoincr"`
-	PullID      int64                 `xorm:"UNIQUE"`
-	DoerID      int64                 `xorm:"INDEX NOT NULL"`
-	Doer        *user_model.User      `xorm:"-"`
-	MergeStyle  repo_model.MergeStyle `xorm:"varchar(30)"`
-	Message     string                `xorm:"LONGTEXT"`
-	CreatedUnix timeutil.TimeStamp    `xorm:"created"`
+	ID                     int64                 `xorm:"pk autoincr"`
+	PullID                 int64                 `xorm:"UNIQUE"`
+	DoerID                 int64                 `xorm:"INDEX NOT NULL"`
+	Doer                   *user_model.User      `xorm:"-"`
+	MergeStyle             repo_model.MergeStyle `xorm:"varchar(30)"`
+	Message                string                `xorm:"LONGTEXT"`
+	DeleteBranchAfterMerge bool                  `xorm:"NOT NULL DEFAULT false"`
+	CreatedUnix            timeutil.TimeStamp    `xorm:"created"`
 }
 
 // TableName return database table name for xorm
@@ -49,7 +50,7 @@ func IsErrAlreadyScheduledToAutoMerge(err error) bool {
 }
 
 // ScheduleAutoMerge schedules a pull request to be merged when all checks succeed
-func ScheduleAutoMerge(ctx context.Context, doer *user_model.User, pullID int64, style repo_model.MergeStyle, message string) error {
+func ScheduleAutoMerge(ctx context.Context, doer *user_model.User, pullID int64, style repo_model.MergeStyle, message string, deleteBranch bool) error {
 	// Check if we already have a merge scheduled for that pull request
 	if exists, _, err := GetScheduledMergeByPullID(ctx, pullID); err != nil {
 		return err
@@ -58,10 +59,11 @@ func ScheduleAutoMerge(ctx context.Context, doer *user_model.User, pullID int64,
 	}
 
 	_, err := db.GetEngine(ctx).Insert(&AutoMerge{
-		DoerID:     doer.ID,
-		PullID:     pullID,
-		MergeStyle: style,
-		Message:    message,
+		DoerID:                 doer.ID,
+		PullID:                 pullID,
+		MergeStyle:             style,
+		Message:                message,
+		DeleteBranchAfterMerge: deleteBranch,
 	})
 	return err
 }

package-lock.json

@@ -1,5 +1,5 @@
 {
-  "name": "forgejo",
+  "name": "forkjo",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {

routers/api/v1/repo/pull.go

@@ -988,7 +988,7 @@ func MergePullRequest(ctx *context.APIContext) {
 	}
 
 	if form.MergeWhenChecksSucceed {
-		scheduled, err := automerge.ScheduleAutoMerge(ctx, ctx.Doer, pr, repo_model.MergeStyle(form.Do), message)
+		scheduled, err := automerge.ScheduleAutoMerge(ctx, ctx.Doer, pr, repo_model.MergeStyle(form.Do), message, form.DeleteBranchAfterMerge)
 		if err != nil {
 			if pull_model.IsErrAlreadyScheduledToAutoMerge(err) {
 				ctx.Error(http.StatusConflict, "ScheduleAutoMerge", err)

routers/private/hook_post_receive_test.go

@@ -28,7 +28,7 @@ func TestHandlePullRequestMerging(t *testing.T) {
 
 	user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
 
-	err = pull_model.ScheduleAutoMerge(db.DefaultContext, user1, pr.ID, repo_model.MergeStyleSquash, "squash merge a pr")
+	err = pull_model.ScheduleAutoMerge(db.DefaultContext, user1, pr.ID, repo_model.MergeStyleSquash, "squash merge a pr", false)
 	require.NoError(t, err)
 
 	autoMerge := unittest.AssertExistsAndLoadBean(t, &pull_model.AutoMerge{PullID: pr.ID})

routers/web/repo/pull.go

@@ -1302,7 +1302,7 @@ func MergePullRequest(ctx *context.Context) {
 		// delete all scheduled auto merges
 		_ = pull_model.DeleteScheduledAutoMerge(ctx, pr.ID)
 		// schedule auto merge
-		scheduled, err := automerge.ScheduleAutoMerge(ctx, ctx.Doer, pr, repo_model.MergeStyle(form.Do), message)
+		scheduled, err := automerge.ScheduleAutoMerge(ctx, ctx.Doer, pr, repo_model.MergeStyle(form.Do), message, form.DeleteBranchAfterMerge)
 		if err != nil {
 			ctx.ServerError("ScheduleAutoMerge", err)
 			return

services/automerge/automerge.go

@@ -22,6 +22,7 @@ import (
 	"code.gitea.io/gitea/modules/queue"
 	notify_service "code.gitea.io/gitea/services/notify"
 	pull_service "code.gitea.io/gitea/services/pull"
+	repo_service "code.gitea.io/gitea/services/repository"
 	shared_automerge "code.gitea.io/gitea/services/shared/automerge"
 )
 
@@ -52,9 +53,9 @@ func handler(items ...string) []string {
 }
 
 // ScheduleAutoMerge if schedule is false and no error, pull can be merged directly
-func ScheduleAutoMerge(ctx context.Context, doer *user_model.User, pull *issues_model.PullRequest, style repo_model.MergeStyle, message string) (scheduled bool, err error) {
+func ScheduleAutoMerge(ctx context.Context, doer *user_model.User, pull *issues_model.PullRequest, style repo_model.MergeStyle, message string, deleteBranch bool) (scheduled bool, err error) {
 	err = db.WithTx(ctx, func(ctx context.Context) error {
-		if err := pull_model.ScheduleAutoMerge(ctx, doer, pull.ID, style, message); err != nil {
+		if err := pull_model.ScheduleAutoMerge(ctx, doer, pull.ID, style, message, deleteBranch); err != nil {
 			return err
 		}
 		scheduled = true
@@ -210,4 +211,15 @@ func handlePullRequestAutoMerge(pullID int64, sha string) {
 		// on the pull request page. But this should not be finished in a bug fix PR which will be backport to release branch.
 		return
 	}
+
+	if scheduledPRM.DeleteBranchAfterMerge {
+		deleted, err := repo_service.DeleteBranchIfUnused(ctx, pr, headGitRepo, doer)
+		if err != nil {
+			if deleted {
+				log.Info("%d branch deleted but got error during comment creation: %v", pr.ID, err)
+			} else {
+				log.Error("%d repo_service.DeleteBranchIfUnused: %v", pr.ID, err)
+			}
+		}
+	}
 }

services/repository/branch.go

@@ -26,6 +26,7 @@ import (
 	"code.gitea.io/gitea/modules/timeutil"
 	webhook_module "code.gitea.io/gitea/modules/webhook"
 	notify_service "code.gitea.io/gitea/services/notify"
+	pull_service "code.gitea.io/gitea/services/pull"
 	files_service "code.gitea.io/gitea/services/repository/files"
 
 	"xorm.io/builder"
@@ -475,6 +476,36 @@ func DeleteBranch(ctx context.Context, doer *user_model.User, repo *repo_model.R
 	return nil
 }
 
+func DeleteBranchIfUnused(ctx context.Context, pr *issues_model.PullRequest, repo *git.Repository, doer *user_model.User) (bool, error) {
+	// Don't cleanup when there are other PR's that use this branch as head branch.
+	exist, err := issues_model.HasUnmergedPullRequestsByHeadInfo(ctx, pr.HeadRepoID, pr.HeadBranch)
+	if err != nil {
+		log.Error("HasUnmergedPullRequestsByHeadInfo", err)
+		return false, err
+	}
+	if exist {
+		log.Info("%d was scheduled to automerge with branch deletion but branch is still used", pr.ID)
+		return false, nil
+	}
+
+	if err := pull_service.RetargetChildrenOnMerge(ctx, doer, pr); err != nil {
+		log.Error("RetargetChildrenOnMerge", err)
+		return false, err
+	}
+
+	if err := DeleteBranch(ctx, doer, pr.HeadRepo, repo, pr.HeadBranch); err != nil {
+		log.Error("DeleteBranch: %v", err)
+		return false, err
+	}
+
+	if err := issues_model.AddDeletePRBranchComment(ctx, doer, pr.BaseRepo, pr.Issue.ID, pr.HeadBranch); err != nil {
+		log.Error("AddDeletePRBranchComment: %v", err)
+		return true, err
+	}
+
+	return true, nil
+}
+
 type BranchSyncOptions struct {
 	RepoID int64
 }

tests/integration/actions_commit_status_test.go

@@ -34,7 +34,7 @@ func TestActionsAutomerge(t *testing.T) {
 		assert.False(t, pr.HasMerged, "PR should not be merged")
 		assert.Equal(t, issues_model.PullRequestStatusMergeable, pr.Status, "PR should be mergeable")
 
-		scheduled, err := automerge.ScheduleAutoMerge(ctx, user, pr, repo_model.MergeStyleMerge, "Dummy")
+		scheduled, err := automerge.ScheduleAutoMerge(ctx, user, pr, repo_model.MergeStyleMerge, "Dummy", false)
 
 		require.NoError(t, err, "PR should be scheduled for automerge")
 		assert.True(t, scheduled, "PR should be scheduled for automerge")

tests/integration/pull_merge_test.go

@@ -845,160 +845,99 @@ func TestPullMergeBranchProtect(t *testing.T) {
 	})
 }
 
-func TestPullAutoMergeAfterCommitStatusSucceed(t *testing.T) {
-	onGiteaRun(t, func(t *testing.T, giteaURL *url.URL) {
-		// create a pull request
-		session := loginUser(t, "user1")
-		user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
-		forkedName := "repo1-1"
-		testRepoFork(t, session, "user2", "repo1", "user1", forkedName)
-		defer func() {
-			testDeleteRepository(t, session, "user1", forkedName)
-		}()
-		testEditFile(t, session, "user1", forkedName, "master", "README.md", "Hello, World (Edited)\n")
-		testPullCreate(t, session, "user1", forkedName, false, "master", "master", "Indexer notifier test pull")
+func testPullAutoMergeAfterCommitStatusSucceed(t *testing.T, forkName string, approval bool, deleteBranch bool) {
+	// create a pull request
+	session := loginUser(t, "user1")
+	user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
+	testRepoFork(t, session, "user2", "repo1", "user1", forkName)
+	defer func() {
+		testDeleteRepository(t, session, "user1", forkName)
+	}()
+	if deleteBranch {
+		testEditFileToNewBranch(t, session, "user1", forkName, "master", "new_branch_1", "README.md", "Hello, World (Edited)\n")
+		testPullCreate(t, session, "user1", forkName, false, "master", "new_branch_1", "Indexer notifier test pull")
+	} else {
+		testEditFile(t, session, "user1", forkName, "master", "README.md", "Hello, World (Edited)\n")
+		testPullCreate(t, session, "user1", forkName, false, "master", "master", "Indexer notifier test pull")
+	}
 
-		baseRepo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{OwnerName: "user2", Name: "repo1"})
-		forkedRepo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{OwnerName: "user1", Name: forkedName})
-		pr := unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{
-			BaseRepoID: baseRepo.ID,
-			BaseBranch: "master",
-			HeadRepoID: forkedRepo.ID,
-			HeadBranch: "master",
-		})
-
-		// add protected branch for commit status
-		csrf := GetCSRF(t, session, "/user2/repo1/settings/branches")
-		// Change master branch to protected
-		req := NewRequestWithValues(t, "POST", "/user2/repo1/settings/branches/edit", map[string]string{
-			"_csrf":                 csrf,
-			"rule_name":             "master",
-			"enable_push":           "true",
-			"enable_status_check":   "true",
-			"status_check_contexts": "gitea/actions",
-		})
-		session.MakeRequest(t, req, http.StatusSeeOther)
-
-		// first time insert automerge record, return true
-		scheduled, err := automerge.ScheduleAutoMerge(db.DefaultContext, user1, pr, repo_model.MergeStyleMerge, "auto merge test")
-		require.NoError(t, err)
-		assert.True(t, scheduled)
-
-		// second time insert automerge record, return false because it does exist
-		scheduled, err = automerge.ScheduleAutoMerge(db.DefaultContext, user1, pr, repo_model.MergeStyleMerge, "auto merge test")
-		require.Error(t, err)
-		assert.False(t, scheduled)
-
-		// reload pr again
-		pr = unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{ID: pr.ID})
-		assert.False(t, pr.HasMerged)
-		assert.Empty(t, pr.MergedCommitID)
-
-		// update commit status to success, then it should be merged automatically
-		baseGitRepo, err := gitrepo.OpenRepository(db.DefaultContext, baseRepo)
-		require.NoError(t, err)
-		sha, err := baseGitRepo.GetRefCommitID(pr.GetGitRefName())
-		require.NoError(t, err)
-		masterCommitID, err := baseGitRepo.GetBranchCommitID("master")
-		require.NoError(t, err)
-
-		branches, _, err := baseGitRepo.GetBranchNames(0, 100)
-		require.NoError(t, err)
-		assert.ElementsMatch(t, []string{"sub-home-md-img-check", "home-md-img-check", "pr-to-update", "branch2", "DefaultBranch", "develop", "feature/1", "master"}, branches)
-		baseGitRepo.Close()
-		defer func() {
-			testResetRepo(t, baseRepo.RepoPath(), "master", masterCommitID)
-		}()
-
-		err = commitstatus_service.CreateCommitStatus(db.DefaultContext, baseRepo, user1, sha, &git_model.CommitStatus{
-			State:     api.CommitStatusSuccess,
-			TargetURL: "https://gitea.com",
-			Context:   "gitea/actions",
-		})
-		require.NoError(t, err)
-
-		time.Sleep(2 * time.Second)
-
-		// realod pr again
-		pr = unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{ID: pr.ID})
-		assert.True(t, pr.HasMerged)
-		assert.NotEmpty(t, pr.MergedCommitID)
-
-		unittest.AssertNotExistsBean(t, &pull_model.AutoMerge{PullID: pr.ID})
+	baseRepo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{OwnerName: "user2", Name: "repo1"})
+	forkedRepo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{OwnerName: "user1", Name: forkName})
+	pr := unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{
+		BaseRepoID: baseRepo.ID,
+		BaseBranch: "master",
+		HeadRepoID: forkedRepo.ID,
+		HeadBranch: "master",
 	})
-}
 
-func TestPullAutoMergeAfterCommitStatusSucceedAndApproval(t *testing.T) {
-	onGiteaRun(t, func(t *testing.T, giteaURL *url.URL) {
-		// create a pull request
-		session := loginUser(t, "user1")
-		user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
-		forkedName := "repo1-2"
-		testRepoFork(t, session, "user2", "repo1", "user1", forkedName)
-		defer func() {
-			testDeleteRepository(t, session, "user1", forkedName)
-		}()
-		testEditFile(t, session, "user1", forkedName, "master", "README.md", "Hello, World (Edited)\n")
-		testPullCreate(t, session, "user1", forkedName, false, "master", "master", "Indexer notifier test pull")
+	// add protected branch for commit status
+	csrf := GetCSRF(t, session, "/user2/repo1/settings/branches")
 
-		baseRepo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{OwnerName: "user2", Name: "repo1"})
-		forkedRepo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{OwnerName: "user1", Name: forkedName})
-		pr := unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{
-			BaseRepoID: baseRepo.ID,
-			BaseBranch: "master",
-			HeadRepoID: forkedRepo.ID,
-			HeadBranch: "master",
-		})
+	// Change master branch to protected
+	reqParams := map[string]string{
+		"_csrf":                 csrf,
+		"rule_name":             "master",
+		"enable_push":           "true",
+		"enable_status_check":   "true",
+		"status_check_contexts": "gitea/actions",
+	}
+	if approval {
+		reqParams["required_approvals"] = "1"
+	}
 
-		// add protected branch for commit status
-		csrf := GetCSRF(t, session, "/user2/repo1/settings/branches")
-		// Change master branch to protected
-		req := NewRequestWithValues(t, "POST", "/user2/repo1/settings/branches/edit", map[string]string{
-			"_csrf":                 csrf,
-			"rule_name":             "master",
-			"enable_push":           "true",
-			"enable_status_check":   "true",
-			"status_check_contexts": "gitea/actions",
-			"required_approvals":    "1",
-		})
-		session.MakeRequest(t, req, http.StatusSeeOther)
+	req := NewRequestWithValues(t, "POST", "/user2/repo1/settings/branches/edit", reqParams)
+	session.MakeRequest(t, req, http.StatusSeeOther)
 
-		// first time insert automerge record, return true
-		scheduled, err := automerge.ScheduleAutoMerge(db.DefaultContext, user1, pr, repo_model.MergeStyleMerge, "auto merge test")
+	if deleteBranch {
+		// check if new branch exists
+		forkedGitRepo, err := gitrepo.OpenRepository(db.DefaultContext, forkedRepo)
 		require.NoError(t, err)
-		assert.True(t, scheduled)
-
-		// second time insert automerge record, return false because it does exist
-		scheduled, err = automerge.ScheduleAutoMerge(db.DefaultContext, user1, pr, repo_model.MergeStyleMerge, "auto merge test")
-		require.Error(t, err)
-		assert.False(t, scheduled)
-
-		// reload pr again
-		pr = unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{ID: pr.ID})
-		assert.False(t, pr.HasMerged)
-		assert.Empty(t, pr.MergedCommitID)
-
-		// update commit status to success, then it should be merged automatically
-		baseGitRepo, err := gitrepo.OpenRepository(db.DefaultContext, baseRepo)
+		newBranch, err := forkedGitRepo.GetBranch("new_branch_1")
 		require.NoError(t, err)
-		sha, err := baseGitRepo.GetRefCommitID(pr.GetGitRefName())
-		require.NoError(t, err)
-		masterCommitID, err := baseGitRepo.GetBranchCommitID("master")
-		require.NoError(t, err)
-		baseGitRepo.Close()
-		defer func() {
-			testResetRepo(t, baseRepo.RepoPath(), "master", masterCommitID)
-		}()
+		assert.NotNil(t, newBranch)
+	}
 
-		err = commitstatus_service.CreateCommitStatus(db.DefaultContext, baseRepo, user1, sha, &git_model.CommitStatus{
-			State:     api.CommitStatusSuccess,
-			TargetURL: "https://gitea.com",
-			Context:   "gitea/actions",
-		})
-		require.NoError(t, err)
+	// first time insert automerge record, return true
+	scheduled, err := automerge.ScheduleAutoMerge(db.DefaultContext, user1, pr, repo_model.MergeStyleMerge, "auto merge test", false)
+	require.NoError(t, err)
+	assert.True(t, scheduled)
 
-		time.Sleep(2 * time.Second)
+	// second time insert automerge record, return false because it does exist
+	scheduled, err = automerge.ScheduleAutoMerge(db.DefaultContext, user1, pr, repo_model.MergeStyleMerge, "auto merge test", false)
+	require.Error(t, err)
+	assert.False(t, scheduled)
 
+	// reload pr again
+	pr = unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{ID: pr.ID})
+	assert.False(t, pr.HasMerged)
+	assert.Empty(t, pr.MergedCommitID)
+
+	// update commit status to success, then it should be merged automatically
+	baseGitRepo, err := gitrepo.OpenRepository(db.DefaultContext, baseRepo)
+	require.NoError(t, err)
+	sha, err := baseGitRepo.GetRefCommitID(pr.GetGitRefName())
+	require.NoError(t, err)
+	masterCommitID, err := baseGitRepo.GetBranchCommitID("master")
+	require.NoError(t, err)
+
+	branches, _, err := baseGitRepo.GetBranchNames(0, 100)
+	require.NoError(t, err)
+	assert.ElementsMatch(t, []string{"sub-home-md-img-check", "home-md-img-check", "pr-to-update", "branch2", "DefaultBranch", "develop", "feature/1", "master"}, branches)
+	baseGitRepo.Close()
+	defer func() {
+		testResetRepo(t, baseRepo.RepoPath(), "master", masterCommitID)
+	}()
+
+	err = commitstatus_service.CreateCommitStatus(db.DefaultContext, baseRepo, user1, sha, &git_model.CommitStatus{
+		State:     api.CommitStatusSuccess,
+		TargetURL: "https://gitea.com",
+		Context:   "gitea/actions",
+	})
+	require.NoError(t, err)
+
+	time.Sleep(2 * time.Second)
+
+	if approval {
 		// reload pr again
 		pr = unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{ID: pr.ID})
 		assert.False(t, pr.HasMerged)
@@ -1012,13 +951,62 @@ func TestPullAutoMergeAfterCommitStatusSucceedAndApproval(t *testing.T) {
 		testSubmitReview(t, approveSession, htmlDoc.GetCSRF(), "user2", "repo1", strconv.Itoa(int(pr.Index)), sha, "approve", http.StatusOK)
 
 		time.Sleep(2 * time.Second)
+	}
 
-		// realod pr again
-		pr = unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{ID: pr.ID})
-		assert.True(t, pr.HasMerged)
-		assert.NotEmpty(t, pr.MergedCommitID)
+	// realod pr again
+	pr = unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{ID: pr.ID})
+	assert.True(t, pr.HasMerged)
+	assert.NotEmpty(t, pr.MergedCommitID)
 
-		unittest.AssertNotExistsBean(t, &pull_model.AutoMerge{PullID: pr.ID})
+	unittest.AssertNotExistsBean(t, &pull_model.AutoMerge{PullID: pr.ID})
+
+	if deleteBranch {
+		// check if new branch got removed
+		forkedGitRepo, err := gitrepo.OpenRepository(db.DefaultContext, forkedRepo)
+		require.NoError(t, err)
+		_, err = forkedGitRepo.GetBranch("new_branch_1")
+		require.Error(t, err)
+		assert.True(t, git.IsErrBranchNotExist(err))
+	}
+}
+
+func TestPullAutoMergeAfterCommitStatusSucceed(t *testing.T) {
+	onGiteaRun(t, func(t *testing.T, giteaURL *url.URL) {
+		for _, testCase := range []struct {
+			name         string
+			forkName     string
+			approval     bool
+			deleteBranch bool
+		}{
+			{
+				name:         "TestPullAutoMergeAfterCommitStatusSucceed",
+				forkName:     "repo1-1",
+				approval:     false,
+				deleteBranch: false,
+			},
+			{
+				name:         "TestPullAutoMergeAfterCommitStatusSucceedWithBranchDeletion",
+				forkName:     "repo1-2",
+				approval:     false,
+				deleteBranch: true,
+			},
+			{
+				name:         "TestPullAutoMergeAfterCommitStatusSucceedAndApproval",
+				forkName:     "repo2-1",
+				approval:     true,
+				deleteBranch: false,
+			},
+			{
+				name:         "TestPullAutoMergeAfterCommitStatusSucceedAndApprovalWithBranchDeletion",
+				forkName:     "repo2-2",
+				approval:     true,
+				deleteBranch: true,
+			},
+		} {
+			t.Run(testCase.name, func(t *testing.T) {
+				testPullAutoMergeAfterCommitStatusSucceed(t, testCase.forkName, testCase.approval, testCase.deleteBranch)
+			})
+		}
 	})
 }
 
@@ -1093,12 +1081,12 @@ func TestPullAutoMergeAfterCommitStatusSucceedAndApprovalForAgitFlow(t *testing.
 
 		user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
 		// first time insert automerge record, return true
-		scheduled, err := automerge.ScheduleAutoMerge(db.DefaultContext, user1, pr, repo_model.MergeStyleMerge, "auto merge test")
+		scheduled, err := automerge.ScheduleAutoMerge(db.DefaultContext, user1, pr, repo_model.MergeStyleMerge, "auto merge test", false)
 		require.NoError(t, err)
 		assert.True(t, scheduled)
 
 		// second time insert automerge record, return false because it does exist
-		scheduled, err = automerge.ScheduleAutoMerge(db.DefaultContext, user1, pr, repo_model.MergeStyleMerge, "auto merge test")
+		scheduled, err = automerge.ScheduleAutoMerge(db.DefaultContext, user1, pr, repo_model.MergeStyleMerge, "auto merge test", false)
 		require.Error(t, err)
 		assert.False(t, scheduled)
 
@@ -1150,3 +1138,146 @@ func TestPullAutoMergeAfterCommitStatusSucceedAndApprovalForAgitFlow(t *testing.
 		unittest.AssertNotExistsBean(t, &pull_model.AutoMerge{PullID: pr.ID})
 	})
 }
+
+func TestPullAutoMergeWithBranchDeletionAfterCommitStatusSucceedAndApprovalForAgitFlow(t *testing.T) {
+	onGiteaRun(t, func(t *testing.T, u *url.URL) {
+		// create a pull request
+		baseAPITestContext := NewAPITestContext(t, "user2", "repo1", auth_model.AccessTokenScopeWriteRepository, auth_model.AccessTokenScopeWriteUser)
+
+		dstPath := t.TempDir()
+
+		u.Path = baseAPITestContext.GitPath()
+		u.User = url.UserPassword("user2", userPassword)
+
+		t.Run("Clone", doGitClone(dstPath, u))
+
+		err := os.WriteFile(path.Join(dstPath, "test_file"), []byte("## test content"), 0o666)
+		require.NoError(t, err)
+
+		err = git.AddChanges(dstPath, true)
+		require.NoError(t, err)
+
+		err = git.CommitChanges(dstPath, git.CommitChangesOptions{
+			Committer: &git.Signature{
+				Email: "user2@example.com",
+				Name:  "user2",
+				When:  time.Now(),
+			},
+			Author: &git.Signature{
+				Email: "user2@example.com",
+				Name:  "user2",
+				When:  time.Now(),
+			},
+			Message: "Testing commit 1",
+		})
+		require.NoError(t, err)
+
+		stderrBuf := &bytes.Buffer{}
+
+		err = git.NewCommand(git.DefaultContext, "push", "origin", "HEAD:refs/for/master", "-o").
+			AddDynamicArguments(`topic=test/head2`).
+			AddArguments("-o").
+			AddDynamicArguments(`title="create a test pull request with agit"`).
+			AddArguments("-o").
+			AddDynamicArguments(`description="This PR is a test pull request which created with agit"`).
+			Run(&git.RunOpts{Dir: dstPath, Stderr: stderrBuf})
+		require.NoError(t, err)
+
+		assert.Contains(t, stderrBuf.String(), setting.AppURL+"user2/repo1/pulls/6")
+
+		baseRepo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{OwnerName: "user2", Name: "repo1"})
+		pr := unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{
+			Flow:       issues_model.PullRequestFlowAGit,
+			BaseRepoID: baseRepo.ID,
+			BaseBranch: "master",
+			HeadRepoID: baseRepo.ID,
+			HeadBranch: "user2/test/head2",
+		})
+
+		session := loginUser(t, "user1")
+		// add protected branch for commit status
+		csrf := GetCSRF(t, session, "/user2/repo1/settings/branches")
+		// Change master branch to protected
+		req := NewRequestWithValues(t, "POST", "/user2/repo1/settings/branches/edit", map[string]string{
+			"_csrf":                 csrf,
+			"rule_name":             "master",
+			"enable_push":           "true",
+			"enable_status_check":   "true",
+			"status_check_contexts": "gitea/actions",
+			"required_approvals":    "1",
+		})
+		session.MakeRequest(t, req, http.StatusSeeOther)
+
+		// check if new branch exists
+		baseGitRepo, err := gitrepo.OpenRepository(db.DefaultContext, baseRepo)
+		require.NoError(t, err)
+		newBranch, err := baseGitRepo.GetBranch("user2/test/head2")
+		require.NoError(t, err)
+		assert.NotNil(t, newBranch)
+
+		user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
+		// first time insert automerge record, return true
+		scheduled, err := automerge.ScheduleAutoMerge(db.DefaultContext, user1, pr, repo_model.MergeStyleMerge, "auto merge test", true)
+		require.NoError(t, err)
+		assert.True(t, scheduled)
+
+		// second time insert automerge record, return false because it does exist
+		scheduled, err = automerge.ScheduleAutoMerge(db.DefaultContext, user1, pr, repo_model.MergeStyleMerge, "auto merge test", true)
+		require.Error(t, err)
+		assert.False(t, scheduled)
+
+		// reload pr again
+		pr = unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{ID: pr.ID})
+		assert.False(t, pr.HasMerged)
+		assert.Empty(t, pr.MergedCommitID)
+
+		// update commit status to success, then it should be merged automatically
+		baseGitRepo, err = gitrepo.OpenRepository(db.DefaultContext, baseRepo)
+		require.NoError(t, err)
+		sha, err := baseGitRepo.GetRefCommitID(pr.GetGitRefName())
+		require.NoError(t, err)
+		masterCommitID, err := baseGitRepo.GetBranchCommitID("master")
+		require.NoError(t, err)
+		baseGitRepo.Close()
+		defer func() {
+			testResetRepo(t, baseRepo.RepoPath(), "master", masterCommitID)
+		}()
+
+		err = commitstatus_service.CreateCommitStatus(db.DefaultContext, baseRepo, user1, sha, &git_model.CommitStatus{
+			State:     api.CommitStatusSuccess,
+			TargetURL: "https://gitea.com",
+			Context:   "gitea/actions",
+		})
+		require.NoError(t, err)
+
+		time.Sleep(2 * time.Second)
+
+		// reload pr again
+		pr = unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{ID: pr.ID})
+		assert.False(t, pr.HasMerged)
+		assert.Empty(t, pr.MergedCommitID)
+
+		// approve the PR from non-author
+		approveSession := loginUser(t, "user1")
+		req = NewRequest(t, "GET", fmt.Sprintf("/user2/repo1/pulls/%d", pr.Index))
+		resp := approveSession.MakeRequest(t, req, http.StatusOK)
+		htmlDoc := NewHTMLParser(t, resp.Body)
+		testSubmitReview(t, approveSession, htmlDoc.GetCSRF(), "user2", "repo1", strconv.Itoa(int(pr.Index)), sha, "approve", http.StatusOK)
+
+		time.Sleep(2 * time.Second)
+
+		// realod pr again
+		pr = unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{ID: pr.ID})
+		assert.True(t, pr.HasMerged)
+		assert.NotEmpty(t, pr.MergedCommitID)
+
+		unittest.AssertNotExistsBean(t, &pull_model.AutoMerge{PullID: pr.ID})
+
+		// check if new branch got removed
+		baseGitRepo, err = gitrepo.OpenRepository(db.DefaultContext, baseRepo)
+		require.NoError(t, err)
+		_, err = baseGitRepo.GetBranch("user2/test/head2")
+		require.Error(t, err)
+		assert.True(t, git.IsErrBranchNotExist(err))
+	})
+}

web_src/js/components/PullRequestMergeForm.vue

@@ -130,7 +130,7 @@ export default {
         {{ mergeForm.textCancel }}
       </button>
 
-      <div class="ui checkbox tw-ml-1" v-if="mergeForm.isPullBranchDeletable && !autoMergeWhenSucceed">
+      <div class="ui checkbox tw-ml-1" v-if="mergeForm.isPullBranchDeletable">
         <input name="delete_branch_after_merge" type="checkbox" v-model="deleteBranchAfterMerge" id="delete-branch-after-merge">
         <label for="delete-branch-after-merge">{{ mergeForm.textDeleteBranch }}</label>
       </div>