Add "Update Branch" button to Pull Requests (#9784)

* add Divergence

* add Update Button

* first working version

* re-use code

* split raw merge commands and db-change functions (notify, cache, ...)

* use rawMerge (remove redundant code)

* own function to get Diverging of PRs

* use FlashError

* correct Error Msg

* hook is triggerd ... so remove comment

* add "branch2" to "user2/repo1" because it unit-test "TestPullView_ReviewerMissed" use it but dont exist jet :/

* move GetPerm to IsUserAllowedToUpdate

* add Flash Success MSG

* imprufe code
- remove useless js chage

* fix-lint

* TEST: add PullRequest ID:5
Repo: user2/repo1
Base: branch1
Head: pr-to-update

* correct comments

* make PR5 outdated

* fix Tests

* WIP: add pull update test

* update revs

* update locales

* working TEST

* update UI

* misspell

* change style

* add 1s delay so rev exist

* move row up (before merge row)

* fix lint nit

* UI remove divider

* Update style

* nits

* do it right

* introduce IsSameRepo

* remove useless check

Co-authored-by: Lauris BH <lauris@nix.lv>

1 files changed, 136 insertions, 0 deletions

diff --git a/integrations/pull_update_test.go b/integrations/pull_update_test.go
new file mode 100644
index 0000000000..484390001c
--- /dev/null
+++ b/integrations/pull_update_test.go
@@ -0,0 +1,136 @@
+// Copyright 2020 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 integrations
+
+import (
+	"fmt"
+	"net/url"
+	"testing"
+	"time"
+
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/repofiles"
+	repo_module "code.gitea.io/gitea/modules/repository"
+	pull_service "code.gitea.io/gitea/services/pull"
+	repo_service "code.gitea.io/gitea/services/repository"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPullUpdate(t *testing.T) {
+	onGiteaRun(t, func(t *testing.T, giteaURL *url.URL) {
+		//Create PR to test
+		user := models.AssertExistsAndLoadBean(t, &models.User{ID: 2}).(*models.User)
+		org26 := models.AssertExistsAndLoadBean(t, &models.User{ID: 26}).(*models.User)
+		pr := createOutdatedPR(t, user, org26)
+
+		//Test GetDiverging
+		diffCount, err := pull_service.GetDiverging(pr)
+		assert.NoError(t, err)
+		assert.EqualValues(t, 1, diffCount.Behind)
+		assert.EqualValues(t, 1, diffCount.Ahead)
+
+		message := fmt.Sprintf("Merge branch '%s' into %s", pr.BaseBranch, pr.HeadBranch)
+		err = pull_service.Update(pr, user, message)
+		assert.NoError(t, err)
+
+		//Test GetDiverging after update
+		diffCount, err = pull_service.GetDiverging(pr)
+		assert.NoError(t, err)
+		assert.EqualValues(t, 0, diffCount.Behind)
+		assert.EqualValues(t, 2, diffCount.Ahead)
+
+	})
+}
+
+func createOutdatedPR(t *testing.T, actor, forkOrg *models.User) *models.PullRequest {
+	baseRepo, err := repo_service.CreateRepository(actor, actor, models.CreateRepoOptions{
+		Name:        "repo-pr-update",
+		Description: "repo-tmp-pr-update description",
+		AutoInit:    true,
+		Gitignores:  "C,C++",
+		License:     "MIT",
+		Readme:      "Default",
+		IsPrivate:   false,
+	})
+	assert.NoError(t, err)
+	assert.NotEmpty(t, baseRepo)
+
+	headRepo, err := repo_module.ForkRepository(actor, forkOrg, baseRepo, "repo-pr-update", "desc")
+	assert.NoError(t, err)
+	assert.NotEmpty(t, headRepo)
+
+	//create a commit on base Repo
+	_, err = repofiles.CreateOrUpdateRepoFile(baseRepo, actor, &repofiles.UpdateRepoFileOptions{
+		TreePath:  "File_A",
+		Message:   "Add File A",
+		Content:   "File A",
+		IsNewFile: true,
+		OldBranch: "master",
+		NewBranch: "master",
+		Author: &repofiles.IdentityOptions{
+			Name:  actor.Name,
+			Email: actor.Email,
+		},
+		Committer: &repofiles.IdentityOptions{
+			Name:  actor.Name,
+			Email: actor.Email,
+		},
+		Dates: &repofiles.CommitDateOptions{
+			Author:    time.Now(),
+			Committer: time.Now(),
+		},
+	})
+	assert.NoError(t, err)
+
+	//create a commit on head Repo
+	_, err = repofiles.CreateOrUpdateRepoFile(headRepo, actor, &repofiles.UpdateRepoFileOptions{
+		TreePath:  "File_B",
+		Message:   "Add File on PR branch",
+		Content:   "File B",
+		IsNewFile: true,
+		OldBranch: "master",
+		NewBranch: "newBranch",
+		Author: &repofiles.IdentityOptions{
+			Name:  actor.Name,
+			Email: actor.Email,
+		},
+		Committer: &repofiles.IdentityOptions{
+			Name:  actor.Name,
+			Email: actor.Email,
+		},
+		Dates: &repofiles.CommitDateOptions{
+			Author:    time.Now(),
+			Committer: time.Now(),
+		},
+	})
+	assert.NoError(t, err)
+
+	//create Pull
+	pullIssue := &models.Issue{
+		RepoID:   baseRepo.ID,
+		Title:    "Test Pull -to-update-",
+		PosterID: actor.ID,
+		Poster:   actor,
+		IsPull:   true,
+	}
+	pullRequest := &models.PullRequest{
+		HeadRepoID: headRepo.ID,
+		BaseRepoID: baseRepo.ID,
+		HeadBranch: "newBranch",
+		BaseBranch: "master",
+		HeadRepo:   headRepo,
+		BaseRepo:   baseRepo,
+		Type:       models.PullRequestGitea,
+	}
+	err = pull_service.NewPullRequest(baseRepo, pullIssue, nil, nil, pullRequest, nil)
+	assert.NoError(t, err)
+
+	issue := models.AssertExistsAndLoadBean(t, &models.Issue{Title: "Test Pull -to-update-"}).(*models.Issue)
+	pr, err := models.GetPullRequestByIssueID(issue.ID)
+	assert.NoError(t, err)
+
+	return pr
+}