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// Copyright 2019 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package vcs
import (
"fmt"
"os"
"path/filepath"
"strings"
"testing"
"time"
"github.com/google/syzkaller/pkg/osutil"
)
const (
userEmail = `test@syzkaller.com`
userName = `Test Syzkaller`
extractFixTagsEmail = `"syzbot" <syzbot@my.mail.com>`
)
type TestRepo struct {
t *testing.T
Dir string
name string
Commits map[string]map[string]*Commit
repo *gitRepo
}
func (repo *TestRepo) Git(args ...string) {
repo.t.Helper()
cmd := osutil.Command("git", args...)
cmd.Dir = repo.Dir
cmd.Env = filterEnv()
if _, err := osutil.Run(time.Minute, cmd); err != nil {
repo.t.Fatal(err)
}
}
func MakeTestRepo(t *testing.T, dir string) *TestRepo {
if err := osutil.MkdirAll(dir); err != nil {
t.Fatal(err)
}
ignoreCC := map[string]bool{
"stable@vger.kernel.org": true,
}
repo := &TestRepo{
t: t,
Dir: dir,
name: filepath.Base(dir),
Commits: make(map[string]map[string]*Commit),
repo: newGitRepo(dir, ignoreCC, []RepoOpt{OptPrecious, OptDontSandbox}),
}
repo.Git("init")
repo.Git("config", "--add", "user.email", userEmail)
repo.Git("config", "--add", "user.name", userName)
return repo
}
func (repo *TestRepo) CommitFileChange(branch, change string) {
id := fmt.Sprintf("%v-%v-%v", repo.name, branch, change)
file := filepath.Join(repo.Dir, "file")
if err := osutil.WriteFile(file, []byte(id)); err != nil {
repo.t.Fatal(err)
}
repo.Git("add", file)
repo.Git("commit", "-m", id)
if repo.Commits[branch] == nil {
repo.Commits[branch] = make(map[string]*Commit)
}
com, err := repo.repo.Commit(HEAD)
if err != nil {
repo.t.Fatal(err)
}
repo.Commits[branch][change] = com
}
func (repo *TestRepo) CommitChange(description string) *Commit {
return repo.commitChangeset(description)
}
type writeFile struct {
File string
Content string
}
func (wf *writeFile) Apply(repo *TestRepo) error {
err := os.WriteFile(filepath.Join(repo.Dir, wf.File), []byte(wf.Content), 0644)
if err != nil {
return err
}
repo.Git("add", wf.File)
return nil
}
func (repo *TestRepo) commitChangeset(description string, actions ...writeFile) *Commit {
for i, action := range actions {
if err := action.Apply(repo); err != nil {
repo.t.Fatalf("failed to apply action %d: %v", i, err)
}
}
repo.Git("commit", "--allow-empty", "-m", description)
com, err := repo.repo.Commit(HEAD)
if err != nil {
repo.t.Fatal(err)
}
repo.t.Logf("%q's hash is %s", description, com.Hash)
return com
}
func (repo *TestRepo) SetTag(tag string) {
repo.Git("tag", tag)
}
func (repo *TestRepo) SupportsBisection() bool {
// Detect too old git binary. --no-contains appeared in git 2.13.
_, err := repo.repo.previousReleaseTags("HEAD", true, false, false)
return err == nil ||
!strings.Contains(err.Error(), "usage: git tag") &&
!strings.Contains(err.Error(), "error: unknown option")
}
func CreateTestRepo(t *testing.T, baseDir, name string) *TestRepo {
repo := MakeTestRepo(t, filepath.Join(baseDir, name))
repo.Git("checkout", "-b", "master")
repo.CommitFileChange("master", "0")
for _, branch := range []string{"branch1", "branch2"} {
repo.Git("checkout", "-b", branch, "master")
repo.CommitFileChange(branch, "0")
repo.CommitFileChange(branch, "1")
}
repo.Git("checkout", "master")
repo.CommitFileChange("master", "1")
return repo
}
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