package gitutils import ( "fmt" "io/ioutil" "net/http" "net/http/httptest" "net/url" "os" "path/filepath" "reflect" "runtime" "testing" ) func TestCloneArgsSmartHttp(t *testing.T) { mux := http.NewServeMux() server := httptest.NewServer(mux) serverURL, _ := url.Parse(server.URL) serverURL.Path = "/repo.git" gitURL := serverURL.String() mux.HandleFunc("/repo.git/info/refs", func(w http.ResponseWriter, r *http.Request) { q := r.URL.Query().Get("service") w.Header().Set("Content-Type", fmt.Sprintf("application/x-%s-advertisement", q)) }) args := cloneArgs(serverURL, "/tmp") exp := []string{"clone", "--recursive", "--depth", "1", gitURL, "/tmp"} if !reflect.DeepEqual(args, exp) { t.Fatalf("Expected %v, got %v", exp, args) } } func TestCloneArgsDumbHttp(t *testing.T) { mux := http.NewServeMux() server := httptest.NewServer(mux) serverURL, _ := url.Parse(server.URL) serverURL.Path = "/repo.git" gitURL := serverURL.String() mux.HandleFunc("/repo.git/info/refs", func(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", "text/plain") }) args := cloneArgs(serverURL, "/tmp") exp := []string{"clone", "--recursive", gitURL, "/tmp"} if !reflect.DeepEqual(args, exp) { t.Fatalf("Expected %v, got %v", exp, args) } } func TestCloneArgsGit(t *testing.T) { u, _ := url.Parse("git://github.com/docker/docker") args := cloneArgs(u, "/tmp") exp := []string{"clone", "--recursive", "--depth", "1", "git://github.com/docker/docker", "/tmp"} if !reflect.DeepEqual(args, exp) { t.Fatalf("Expected %v, got %v", exp, args) } } func TestCloneArgsStripFragment(t *testing.T) { u, _ := url.Parse("git://github.com/docker/docker#test") args := cloneArgs(u, "/tmp") exp := []string{"clone", "--recursive", "git://github.com/docker/docker", "/tmp"} if !reflect.DeepEqual(args, exp) { t.Fatalf("Expected %v, got %v", exp, args) } } func TestCheckoutGit(t *testing.T) { root, err := ioutil.TempDir("", "docker-build-git-checkout") if err != nil { t.Fatal(err) } defer os.RemoveAll(root) eol := "\n" if runtime.GOOS == "windows" { eol = "\r\n" } gitDir := filepath.Join(root, "repo") _, err = git("init", gitDir) if err != nil { t.Fatal(err) } if _, err = gitWithinDir(gitDir, "config", "user.email", "test@docker.com"); err != nil { t.Fatal(err) } if _, err = gitWithinDir(gitDir, "config", "user.name", "Docker test"); err != nil { t.Fatal(err) } if err = ioutil.WriteFile(filepath.Join(gitDir, "Dockerfile"), []byte("FROM scratch"), 0644); err != nil { t.Fatal(err) } subDir := filepath.Join(gitDir, "subdir") if err = os.Mkdir(subDir, 0755); err != nil { t.Fatal(err) } if err = ioutil.WriteFile(filepath.Join(subDir, "Dockerfile"), []byte("FROM scratch\nEXPOSE 5000"), 0644); err != nil { t.Fatal(err) } if runtime.GOOS != "windows" { if err = os.Symlink("../subdir", filepath.Join(gitDir, "parentlink")); err != nil { t.Fatal(err) } if err = os.Symlink("/subdir", filepath.Join(gitDir, "absolutelink")); err != nil { t.Fatal(err) } } if _, err = gitWithinDir(gitDir, "add", "-A"); err != nil { t.Fatal(err) } if _, err = gitWithinDir(gitDir, "commit", "-am", "First commit"); err != nil { t.Fatal(err) } if _, err = gitWithinDir(gitDir, "checkout", "-b", "test"); err != nil { t.Fatal(err) } if err = ioutil.WriteFile(filepath.Join(gitDir, "Dockerfile"), []byte("FROM scratch\nEXPOSE 3000"), 0644); err != nil { t.Fatal(err) } if err = ioutil.WriteFile(filepath.Join(subDir, "Dockerfile"), []byte("FROM busybox\nEXPOSE 5000"), 0644); err != nil { t.Fatal(err) } if _, err = gitWithinDir(gitDir, "add", "-A"); err != nil { t.Fatal(err) } if _, err = gitWithinDir(gitDir, "commit", "-am", "Branch commit"); err != nil { t.Fatal(err) } if _, err = gitWithinDir(gitDir, "checkout", "master"); err != nil { t.Fatal(err) } type singleCase struct { frag string exp string fail bool } cases := []singleCase{ {"", "FROM scratch", false}, {"master", "FROM scratch", false}, {":subdir", "FROM scratch" + eol + "EXPOSE 5000", false}, {":nosubdir", "", true}, // missing directory error {":Dockerfile", "", true}, // not a directory error {"master:nosubdir", "", true}, {"master:subdir", "FROM scratch" + eol + "EXPOSE 5000", false}, {"master:../subdir", "", true}, {"test", "FROM scratch" + eol + "EXPOSE 3000", false}, {"test:", "FROM scratch" + eol + "EXPOSE 3000", false}, {"test:subdir", "FROM busybox" + eol + "EXPOSE 5000", false}, } if runtime.GOOS != "windows" { // Windows GIT (2.7.1 x64) does not support parentlink/absolutelink. Sample output below // git --work-tree .\repo --git-dir .\repo\.git add -A // error: readlink("absolutelink"): Function not implemented // error: unable to index file absolutelink // fatal: adding files failed cases = append(cases, singleCase{frag: "master:absolutelink", exp: "FROM scratch" + eol + "EXPOSE 5000", fail: false}) cases = append(cases, singleCase{frag: "master:parentlink", exp: "FROM scratch" + eol + "EXPOSE 5000", fail: false}) } for _, c := range cases { r, err := checkoutGit(c.frag, gitDir) fail := err != nil if fail != c.fail { t.Fatalf("Expected %v failure, error was %v\n", c.fail, err) } if c.fail { continue } b, err := ioutil.ReadFile(filepath.Join(r, "Dockerfile")) if err != nil { t.Fatal(err) } if string(b) != c.exp { t.Fatalf("Expected %v, was %v\n", c.exp, string(b)) } } }