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gitea/integrations/pull_merge_test.go
zeripath e4e411821d
Abort merge if head has been updated before pressing merge (#18032) 
* Abort merge if head has been updated before pressing merge

It is possible that a PR head may be pushed to between the merge page being shown
and the merge button being pressed. Pass the current expected head in as a parameter
and cancel the merge if it has changed.

Fix #18028

Signed-off-by: Andrew Thornton <art27@cantab.net>

* adjust swagger

Signed-off-by: Andrew Thornton <art27@cantab.net>

* fix test

Signed-off-by: Andrew Thornton <art27@cantab.net>

* placate lint

Signed-off-by: Andrew Thornton <art27@cantab.net>
2021-12-20 08:32:54 +08:00

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// Copyright 2017 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 (
"bytes"
"fmt"
"net/http"
"net/http/httptest"
"net/url"
"os"
"path"
"strings"
"testing"
"time"
"code.gitea.io/gitea/models"
repo_model "code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/models/unittest"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/models/webhook"
"code.gitea.io/gitea/modules/git"
api "code.gitea.io/gitea/modules/structs"
"code.gitea.io/gitea/modules/test"
"code.gitea.io/gitea/services/pull"
"github.com/stretchr/testify/assert"
"github.com/unknwon/i18n"
)
func testPullMerge(t *testing.T, session *TestSession, user, repo, pullnum string, mergeStyle repo_model.MergeStyle) *httptest.ResponseRecorder {
req := NewRequest(t, "GET", path.Join(user, repo, "pulls", pullnum))
resp := session.MakeRequest(t, req, http.StatusOK)
// Click the little green button to create a pull
htmlDoc := NewHTMLParser(t, resp.Body)
link, exists := htmlDoc.doc.Find(".ui.form." + string(mergeStyle) + "-fields > form").Attr("action")
assert.True(t, exists, "The template has changed")
req = NewRequestWithValues(t, "POST", link, map[string]string{
"_csrf": htmlDoc.GetCSRF(),
"do": string(mergeStyle),
})
resp = session.MakeRequest(t, req, http.StatusFound)
return resp
}
func testPullCleanUp(t *testing.T, session *TestSession, user, repo, pullnum string) *httptest.ResponseRecorder {
req := NewRequest(t, "GET", path.Join(user, repo, "pulls", pullnum))
resp := session.MakeRequest(t, req, http.StatusOK)
// Click the little green button to create a pull
htmlDoc := NewHTMLParser(t, resp.Body)
link, exists := htmlDoc.doc.Find(".timeline-item .delete-button").Attr("data-url")
assert.True(t, exists, "The template has changed")
req = NewRequestWithValues(t, "POST", link, map[string]string{
"_csrf": htmlDoc.GetCSRF(),
})
resp = session.MakeRequest(t, req, http.StatusOK)
return resp
}
func TestPullMerge(t *testing.T) {
onGiteaRun(t, func(t *testing.T, giteaURL *url.URL) {
hookTasks, err := webhook.HookTasks(1, 1) //Retrieve previous hook number
assert.NoError(t, err)
hookTasksLenBefore := len(hookTasks)
session := loginUser(t, "user1")
testRepoFork(t, session, "user2", "repo1", "user1", "repo1")
testEditFile(t, session, "user1", "repo1", "master", "README.md", "Hello, World (Edited)\n")
resp := testPullCreate(t, session, "user1", "repo1", "master", "This is a pull title")
elem := strings.Split(test.RedirectURL(resp), "/")
assert.EqualValues(t, "pulls", elem[3])
testPullMerge(t, session, elem[1], elem[2], elem[4], repo_model.MergeStyleMerge)
hookTasks, err = webhook.HookTasks(1, 1)
assert.NoError(t, err)
assert.Len(t, hookTasks, hookTasksLenBefore+1)
})
}
func TestPullRebase(t *testing.T) {
onGiteaRun(t, func(t *testing.T, giteaURL *url.URL) {
hookTasks, err := webhook.HookTasks(1, 1) //Retrieve previous hook number
assert.NoError(t, err)
hookTasksLenBefore := len(hookTasks)
session := loginUser(t, "user1")
testRepoFork(t, session, "user2", "repo1", "user1", "repo1")
testEditFile(t, session, "user1", "repo1", "master", "README.md", "Hello, World (Edited)\n")
resp := testPullCreate(t, session, "user1", "repo1", "master", "This is a pull title")
elem := strings.Split(test.RedirectURL(resp), "/")
assert.EqualValues(t, "pulls", elem[3])
testPullMerge(t, session, elem[1], elem[2], elem[4], repo_model.MergeStyleRebase)
hookTasks, err = webhook.HookTasks(1, 1)
assert.NoError(t, err)
assert.Len(t, hookTasks, hookTasksLenBefore+1)
})
}
func TestPullRebaseMerge(t *testing.T) {
onGiteaRun(t, func(t *testing.T, giteaURL *url.URL) {
hookTasks, err := webhook.HookTasks(1, 1) //Retrieve previous hook number
assert.NoError(t, err)
hookTasksLenBefore := len(hookTasks)
session := loginUser(t, "user1")
testRepoFork(t, session, "user2", "repo1", "user1", "repo1")
testEditFile(t, session, "user1", "repo1", "master", "README.md", "Hello, World (Edited)\n")
resp := testPullCreate(t, session, "user1", "repo1", "master", "This is a pull title")
elem := strings.Split(test.RedirectURL(resp), "/")
assert.EqualValues(t, "pulls", elem[3])
testPullMerge(t, session, elem[1], elem[2], elem[4], repo_model.MergeStyleRebaseMerge)
hookTasks, err = webhook.HookTasks(1, 1)
assert.NoError(t, err)
assert.Len(t, hookTasks, hookTasksLenBefore+1)
})
}
func TestPullSquash(t *testing.T) {
onGiteaRun(t, func(t *testing.T, giteaURL *url.URL) {
hookTasks, err := webhook.HookTasks(1, 1) //Retrieve previous hook number
assert.NoError(t, err)
hookTasksLenBefore := len(hookTasks)
session := loginUser(t, "user1")
testRepoFork(t, session, "user2", "repo1", "user1", "repo1")
testEditFile(t, session, "user1", "repo1", "master", "README.md", "Hello, World (Edited)\n")
testEditFile(t, session, "user1", "repo1", "master", "README.md", "Hello, World (Edited!)\n")
resp := testPullCreate(t, session, "user1", "repo1", "master", "This is a pull title")
elem := strings.Split(test.RedirectURL(resp), "/")
assert.EqualValues(t, "pulls", elem[3])
testPullMerge(t, session, elem[1], elem[2], elem[4], repo_model.MergeStyleSquash)
hookTasks, err = webhook.HookTasks(1, 1)
assert.NoError(t, err)
assert.Len(t, hookTasks, hookTasksLenBefore+1)
})
}
func TestPullCleanUpAfterMerge(t *testing.T) {
onGiteaRun(t, func(t *testing.T, giteaURL *url.URL) {
session := loginUser(t, "user1")
testRepoFork(t, session, "user2", "repo1", "user1", "repo1")
testEditFileToNewBranch(t, session, "user1", "repo1", "master", "feature/test", "README.md", "Hello, World (Edited - TestPullCleanUpAfterMerge)\n")
resp := testPullCreate(t, session, "user1", "repo1", "feature/test", "This is a pull title")
elem := strings.Split(test.RedirectURL(resp), "/")
assert.EqualValues(t, "pulls", elem[3])
testPullMerge(t, session, elem[1], elem[2], elem[4], repo_model.MergeStyleMerge)
// Check PR branch deletion
resp = testPullCleanUp(t, session, elem[1], elem[2], elem[4])
respJSON := struct {
Redirect string
}{}
DecodeJSON(t, resp, &respJSON)
assert.NotEmpty(t, respJSON.Redirect, "Redirected URL is not found")
elem = strings.Split(respJSON.Redirect, "/")
assert.EqualValues(t, "pulls", elem[3])
// Check branch deletion result
req := NewRequest(t, "GET", respJSON.Redirect)
resp = session.MakeRequest(t, req, http.StatusOK)
htmlDoc := NewHTMLParser(t, resp.Body)
resultMsg := htmlDoc.doc.Find(".ui.message>p").Text()
assert.EqualValues(t, "Branch 'user1/feature/test' has been deleted.", resultMsg)
})
}
func TestCantMergeWorkInProgress(t *testing.T) {
onGiteaRun(t, func(t *testing.T, giteaURL *url.URL) {
session := loginUser(t, "user1")
testRepoFork(t, session, "user2", "repo1", "user1", "repo1")
testEditFile(t, session, "user1", "repo1", "master", "README.md", "Hello, World (Edited)\n")
resp := testPullCreate(t, session, "user1", "repo1", "master", "[wip] This is a pull title")
req := NewRequest(t, "GET", resp.Header().Get("Location"))
resp = session.MakeRequest(t, req, http.StatusOK)
htmlDoc := NewHTMLParser(t, resp.Body)
text := strings.TrimSpace(htmlDoc.doc.Find(".merge-section > .item").Last().Text())
assert.NotEmpty(t, text, "Can't find WIP text")
assert.Contains(t, text, i18n.Tr("en", "repo.pulls.cannot_merge_work_in_progress"), "Unable to find WIP text")
assert.Contains(t, text, "[wip]", "Unable to find WIP text")
})
}
func TestCantMergeConflict(t *testing.T) {
onGiteaRun(t, func(t *testing.T, giteaURL *url.URL) {
session := loginUser(t, "user1")
testRepoFork(t, session, "user2", "repo1", "user1", "repo1")
testEditFileToNewBranch(t, session, "user1", "repo1", "master", "conflict", "README.md", "Hello, World (Edited Once)\n")
testEditFileToNewBranch(t, session, "user1", "repo1", "master", "base", "README.md", "Hello, World (Edited Twice)\n")
// Use API to create a conflicting pr
token := getTokenForLoggedInUser(t, session)
req := NewRequestWithJSON(t, http.MethodPost, fmt.Sprintf("/api/v1/repos/%s/%s/pulls?token=%s", "user1", "repo1", token), &api.CreatePullRequestOption{
Head: "conflict",
Base: "base",
Title: "create a conflicting pr",
})
session.MakeRequest(t, req, 201)
// Now this PR will be marked conflict - or at least a race will do - so drop down to pure code at this point...
user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{
Name: "user1",
}).(*user_model.User)
repo1 := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{
OwnerID: user1.ID,
Name: "repo1",
}).(*repo_model.Repository)
pr := unittest.AssertExistsAndLoadBean(t, &models.PullRequest{
HeadRepoID: repo1.ID,
BaseRepoID: repo1.ID,
HeadBranch: "conflict",
BaseBranch: "base",
}).(*models.PullRequest)
gitRepo, err := git.OpenRepository(repo_model.RepoPath(user1.Name, repo1.Name))
assert.NoError(t, err)
err = pull.Merge(pr, user1, gitRepo, repo_model.MergeStyleMerge, "", "CONFLICT")
assert.Error(t, err, "Merge should return an error due to conflict")
assert.True(t, models.IsErrMergeConflicts(err), "Merge error is not a conflict error")
err = pull.Merge(pr, user1, gitRepo, repo_model.MergeStyleRebase, "", "CONFLICT")
assert.Error(t, err, "Merge should return an error due to conflict")
assert.True(t, models.IsErrRebaseConflicts(err), "Merge error is not a conflict error")
gitRepo.Close()
})
}
func TestCantMergeUnrelated(t *testing.T) {
onGiteaRun(t, func(t *testing.T, giteaURL *url.URL) {
session := loginUser(t, "user1")
testRepoFork(t, session, "user2", "repo1", "user1", "repo1")
testEditFileToNewBranch(t, session, "user1", "repo1", "master", "base", "README.md", "Hello, World (Edited Twice)\n")
// Now we want to create a commit on a branch that is totally unrelated to our current head
// Drop down to pure code at this point
user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{
Name: "user1",
}).(*user_model.User)
repo1 := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{
OwnerID: user1.ID,
Name: "repo1",
}).(*repo_model.Repository)
path := repo_model.RepoPath(user1.Name, repo1.Name)
_, err := git.NewCommand("read-tree", "--empty").RunInDir(path)
assert.NoError(t, err)
stdin := bytes.NewBufferString("Unrelated File")
var stdout strings.Builder
err = git.NewCommand("hash-object", "-w", "--stdin").RunInDirFullPipeline(path, &stdout, nil, stdin)
assert.NoError(t, err)
sha := strings.TrimSpace(stdout.String())
_, err = git.NewCommand("update-index", "--add", "--replace", "--cacheinfo", "100644", sha, "somewher-over-the-rainbow").RunInDir(path)
assert.NoError(t, err)
treeSha, err := git.NewCommand("write-tree").RunInDir(path)
assert.NoError(t, err)
treeSha = strings.TrimSpace(treeSha)
commitTimeStr := time.Now().Format(time.RFC3339)
doerSig := user1.NewGitSig()
env := append(os.Environ(),
"GIT_AUTHOR_NAME="+doerSig.Name,
"GIT_AUTHOR_EMAIL="+doerSig.Email,
"GIT_AUTHOR_DATE="+commitTimeStr,
"GIT_COMMITTER_NAME="+doerSig.Name,
"GIT_COMMITTER_EMAIL="+doerSig.Email,
"GIT_COMMITTER_DATE="+commitTimeStr,
)
messageBytes := new(bytes.Buffer)
_, _ = messageBytes.WriteString("Unrelated")
_, _ = messageBytes.WriteString("\n")
stdout.Reset()
err = git.NewCommand("commit-tree", treeSha).RunInDirTimeoutEnvFullPipeline(env, -1, path, &stdout, nil, messageBytes)
assert.NoError(t, err)
commitSha := strings.TrimSpace(stdout.String())
_, err = git.NewCommand("branch", "unrelated", commitSha).RunInDir(path)
assert.NoError(t, err)
testEditFileToNewBranch(t, session, "user1", "repo1", "master", "conflict", "README.md", "Hello, World (Edited Once)\n")
// Use API to create a conflicting pr
token := getTokenForLoggedInUser(t, session)
req := NewRequestWithJSON(t, http.MethodPost, fmt.Sprintf("/api/v1/repos/%s/%s/pulls?token=%s", "user1", "repo1", token), &api.CreatePullRequestOption{
Head: "unrelated",
Base: "base",
Title: "create an unrelated pr",
})
session.MakeRequest(t, req, 201)
// Now this PR could be marked conflict - or at least a race may occur - so drop down to pure code at this point...
gitRepo, err := git.OpenRepository(path)
assert.NoError(t, err)
pr := unittest.AssertExistsAndLoadBean(t, &models.PullRequest{
HeadRepoID: repo1.ID,
BaseRepoID: repo1.ID,
HeadBranch: "unrelated",
BaseBranch: "base",
}).(*models.PullRequest)
err = pull.Merge(pr, user1, gitRepo, repo_model.MergeStyleMerge, "", "UNRELATED")
assert.Error(t, err, "Merge should return an error due to unrelated")
assert.True(t, models.IsErrMergeUnrelatedHistories(err), "Merge error is not a unrelated histories error")
gitRepo.Close()
})
}
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