Golang homedir.Key函数代码示例

func TestOldInvalidsAuth(t *testing.T) {
	invalids := map[string]string{
		`username = test`: "The Auth config file is empty",
		`username
password`: "Invalid Auth config file",
		`username = test
email`: "Invalid auth configuration file",
	}

	tmpHome, err := ioutil.TempDir("", "config-test")
	if err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(tmpHome)

	homeKey := homedir.Key()
	homeVal := homedir.Get()

	defer func() { os.Setenv(homeKey, homeVal) }()
	os.Setenv(homeKey, tmpHome)

	for content, expectedError := range invalids {
		fn := filepath.Join(tmpHome, oldConfigfile)
		if err := ioutil.WriteFile(fn, []byte(content), 0600); err != nil {
			t.Fatal(err)
		}

		config, err := Load(tmpHome)
		// Use Contains instead of == since the file name will change each time
		if err == nil || !strings.Contains(err.Error(), expectedError) {
			t.Fatalf("Should have failed\nConfig: %v\nGot: %v\nExpected: %v", config, err, expectedError)
		}

	}
}

func TestOldJSONInvalid(t *testing.T) {
	tmpHome, err := ioutil.TempDir("", "config-test")
	if err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(tmpHome)

	homeKey := homedir.Key()
	homeVal := homedir.Get()

	defer func() { os.Setenv(homeKey, homeVal) }()
	os.Setenv(homeKey, tmpHome)

	fn := filepath.Join(tmpHome, oldConfigfile)
	js := `{"https://index.docker.io/v1/":{"auth":"test","email":"[email protected]"}}`
	if err := ioutil.WriteFile(fn, []byte(js), 0600); err != nil {
		t.Fatal(err)
	}

	config, err := Load(tmpHome)
	// Use Contains instead of == since the file name will change each time
	if err == nil || !strings.Contains(err.Error(), "Invalid auth configuration file") {
		t.Fatalf("Expected an error got : %v, %v", config, err)
	}
}

func (s *DockerSuite) TestConfigHttpHeader(c *check.C) {
	testRequires(c, UnixCli) // Can't set/unset HOME on windows right now
	// We either need a level of Go that supports Unsetenv (for cases
	// when HOME/USERPROFILE isn't set), or we need to be able to use
	// os/user but user.Current() only works if we aren't statically compiling

	var headers map[string][]string

	server := httptest.NewServer(http.HandlerFunc(
		func(w http.ResponseWriter, r *http.Request) {
			headers = r.Header
		}))
	defer server.Close()

	homeKey := homedir.Key()
	homeVal := homedir.Get()
	tmpDir, err := ioutil.TempDir("", "fake-home")
	c.Assert(err, check.IsNil)
	defer os.RemoveAll(tmpDir)

	dotDocker := filepath.Join(tmpDir, ".docker")
	os.Mkdir(dotDocker, 0600)
	tmpCfg := filepath.Join(dotDocker, "config.json")

	defer func() { os.Setenv(homeKey, homeVal) }()
	os.Setenv(homeKey, tmpDir)

	data := `{
		"HttpHeaders": { "MyHeader": "MyValue" }
	}`

	err = ioutil.WriteFile(tmpCfg, []byte(data), 0600)
	if err != nil {
		c.Fatalf("Err creating file(%s): %v", tmpCfg, err)
	}

	cmd := exec.Command(dockerBinary, "-H="+server.URL[7:], "ps")
	out, _, _ := runCommandWithOutput(cmd)

	if headers["User-Agent"] == nil {
		c.Fatalf("Missing User-Agent: %q\nout:%v", headers, out)
	}

	if headers["User-Agent"][0] != "Docker-Client/"+dockerversion.VERSION+" ("+runtime.GOOS+")" {
		c.Fatalf("Badly formatted User-Agent: %q\nout:%v", headers, out)
	}

	if headers["Myheader"] == nil || headers["Myheader"][0] != "MyValue" {
		c.Fatalf("Missing/bad header: %q\nout:%v", headers, out)
	}
}

func TestOldValidAuth(t *testing.T) {
	tmpHome, err := ioutil.TempDir("", "config-test")
	if err != nil {
		t.Fatal(err)
	}
	if err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(tmpHome)

	homeKey := homedir.Key()
	homeVal := homedir.Get()

	defer func() { os.Setenv(homeKey, homeVal) }()
	os.Setenv(homeKey, tmpHome)

	fn := filepath.Join(tmpHome, oldConfigfile)
	js := `username = am9lam9lOmhlbGxv
	email = [email protected]`
	if err := ioutil.WriteFile(fn, []byte(js), 0600); err != nil {
		t.Fatal(err)
	}

	config, err := Load(tmpHome)
	if err != nil {
		t.Fatal(err)
	}

	// defaultIndexserver is https://index.docker.io/v1/
	ac := config.AuthConfigs["https://index.docker.io/v1/"]
	if ac.Username != "joejoe" || ac.Password != "hello" {
		t.Fatalf("Missing data from parsing:\n%q", config)
	}

	// Now save it and make sure it shows up in new form
	configStr := saveConfigAndValidateNewFormat(t, config, tmpHome)

	expConfStr := `{
	"auths": {
		"https://index.docker.io/v1/": {
			"auth": "am9lam9lOmhlbGxv"
		}
	}
}`

	if configStr != expConfStr {
		t.Fatalf("Should have save in new form: \n%s\n not \n%s", configStr, expConfStr)
	}
}

func (s *DockerSuite) TestConfigHTTPHeader(c *check.C) {
	testRequires(c, UnixCli) // Can't set/unset HOME on windows right now
	// We either need a level of Go that supports Unsetenv (for cases
	// when HOME/USERPROFILE isn't set), or we need to be able to use
	// os/user but user.Current() only works if we aren't statically compiling

	var headers map[string][]string

	server := httptest.NewServer(http.HandlerFunc(
		func(w http.ResponseWriter, r *http.Request) {
			w.Header().Set("API-Version", api.DefaultVersion)
			headers = r.Header
		}))
	defer server.Close()

	homeKey := homedir.Key()
	homeVal := homedir.Get()
	tmpDir, err := ioutil.TempDir("", "fake-home")
	c.Assert(err, checker.IsNil)
	defer os.RemoveAll(tmpDir)

	dotDocker := filepath.Join(tmpDir, ".docker")
	os.Mkdir(dotDocker, 0600)
	tmpCfg := filepath.Join(dotDocker, "config.json")

	defer func() { os.Setenv(homeKey, homeVal) }()
	os.Setenv(homeKey, tmpDir)

	data := `{
		"HttpHeaders": { "MyHeader": "MyValue" }
	}`

	err = ioutil.WriteFile(tmpCfg, []byte(data), 0600)
	c.Assert(err, checker.IsNil)

	result := icmd.RunCommand(dockerBinary, "-H="+server.URL[7:], "ps")
	result.Assert(c, icmd.Expected{
		ExitCode: 1,
		Error:    "exit status 1",
	})

	c.Assert(headers["User-Agent"], checker.NotNil, check.Commentf("Missing User-Agent"))

	c.Assert(headers["User-Agent"][0], checker.Equals, "Docker-Client/"+dockerversion.Version+" ("+runtime.GOOS+")", check.Commentf("Badly formatted User-Agent,out:%v", result.Combined()))

	c.Assert(headers["Myheader"], checker.NotNil)
	c.Assert(headers["Myheader"][0], checker.Equals, "MyValue", check.Commentf("Missing/bad header,out:%v", result.Combined()))

}

func FixHOME(app *cli.App) {
	appBefore := app.Before

	app.Before = func(c *cli.Context) error {
		// Fix home
		if key := homedir.Key(); os.Getenv(key) == "" {
			value := homedir.Get()
			if value == "" {
				return fmt.Errorf("the %q is not set", key)
			}
			os.Setenv(key, value)
		}

		if appBefore != nil {
			return appBefore(c)
		}
		return nil
	}
}

func TestOldJson(t *testing.T) {
	if runtime.GOOS == "windows" {
		return
	}

	tmpHome, _ := ioutil.TempDir("", "config-test")
	defer os.RemoveAll(tmpHome)

	homeKey := homedir.Key()
	homeVal := homedir.Get()

	defer func() { os.Setenv(homeKey, homeVal) }()
	os.Setenv(homeKey, tmpHome)

	fn := filepath.Join(tmpHome, OLD_CONFIGFILE)
	js := `{"https://index.docker.io/v1/":{"auth":"am9lam9lOmhlbGxv","email":"[email protected]"}}`
	ioutil.WriteFile(fn, []byte(js), 0600)

	config, err := Load(tmpHome)
	if err != nil {
		t.Fatalf("Failed loading on empty json file: %q", err)
	}

	ac := config.AuthConfigs["https://index.docker.io/v1/"]
	if ac.Email != "[email protected]" || ac.Username != "joejoe" || ac.Password != "hello" {
		t.Fatalf("Missing data from parsing:\n%q", config)
	}

	// Now save it and make sure it shows up in new form
	err = config.Save()
	if err != nil {
		t.Fatalf("Failed to save: %q", err)
	}

	buf, err := ioutil.ReadFile(filepath.Join(tmpHome, CONFIGFILE))
	if !strings.Contains(string(buf), `"auths":`) ||
		!strings.Contains(string(buf), "[email protected]") {
		t.Fatalf("Should have save in new form: %s", string(buf))
	}
}

func TestOldInvalidsAuth(t *testing.T) {
	invalids := map[string]string{
		`username = test`: "The Auth config file is empty",
		`username
password
email`: "Invalid Auth config file",
		`username = test
email`: "Invalid auth configuration file",
		`username = am9lam9lOmhlbGxv
email`: "Invalid Auth config file",
	}

	tmpHome, err := ioutil.TempDir("", "config-test")
	if err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(tmpHome)

	homeKey := homedir.Key()
	homeVal := homedir.Get()

	defer func() { os.Setenv(homeKey, homeVal) }()
	os.Setenv(homeKey, tmpHome)

	for content, expectedError := range invalids {
		fn := filepath.Join(tmpHome, oldConfigfile)
		if err := ioutil.WriteFile(fn, []byte(content), 0600); err != nil {
			t.Fatal(err)
		}

		config, err := Load(tmpHome)
		if err == nil || err.Error() != expectedError {
			t.Fatalf("Should have failed, got: %q, %q", config, err)
		}

	}
}

func TestOldJson(t *testing.T) {
	tmpHome, err := ioutil.TempDir("", "config-test")
	if err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(tmpHome)

	homeKey := homedir.Key()
	homeVal := homedir.Get()

	defer func() { os.Setenv(homeKey, homeVal) }()
	os.Setenv(homeKey, tmpHome)

	fn := filepath.Join(tmpHome, oldConfigfile)
	js := `{"https://index.docker.io/v1/":{"auth":"am9lam9lOmhlbGxv","email":"[email protected]"}}`
	if err := ioutil.WriteFile(fn, []byte(js), 0600); err != nil {
		t.Fatal(err)
	}

	config, err := Load(tmpHome)
	if err != nil {
		t.Fatalf("Failed loading on empty json file: %q", err)
	}

	ac := config.AuthConfigs["https://index.docker.io/v1/"]
	if ac.Email != "[email protected]" || ac.Username != "joejoe" || ac.Password != "hello" {
		t.Fatalf("Missing data from parsing:\n%q", config)
	}

	// Now save it and make sure it shows up in new form
	configStr := saveConfigAndValidateNewFormat(t, config, tmpHome)

	if !strings.Contains(configStr, "[email protected]") {
		t.Fatalf("Should have save in new form: %s", configStr)
	}
}

// TestRunDetach checks attaching and detaching with the detach flags, making sure it overrides config file
func (s *DockerSuite) TestRunAttachDetachKeysOverrideConfig(c *check.C) {
	keyCtrlA := []byte{1}
	keyA := []byte{97}

	// Setup config
	homeKey := homedir.Key()
	homeVal := homedir.Get()
	tmpDir, err := ioutil.TempDir("", "fake-home")
	c.Assert(err, checker.IsNil)
	defer os.RemoveAll(tmpDir)

	dotDocker := filepath.Join(tmpDir, ".docker")
	os.Mkdir(dotDocker, 0600)
	tmpCfg := filepath.Join(dotDocker, "config.json")

	defer func() { os.Setenv(homeKey, homeVal) }()
	os.Setenv(homeKey, tmpDir)

	data := `{
		"detachKeys": "ctrl-e,e"
	}`

	err = ioutil.WriteFile(tmpCfg, []byte(data), 0600)
	c.Assert(err, checker.IsNil)

	// Then do the work
	name := "attach-detach"
	dockerCmd(c, "run", "--name", name, "-itd", "busybox", "cat")

	cmd := exec.Command(dockerBinary, "attach", "--detach-keys='ctrl-a,a'", name)
	stdout, err := cmd.StdoutPipe()
	if err != nil {
		c.Fatal(err)
	}
	cpty, tty, err := pty.Open()
	if err != nil {
		c.Fatal(err)
	}
	defer cpty.Close()
	cmd.Stdin = tty
	if err := cmd.Start(); err != nil {
		c.Fatal(err)
	}
	c.Assert(waitRun(name), check.IsNil)

	if _, err := cpty.Write([]byte("hello\n")); err != nil {
		c.Fatal(err)
	}

	out, err := bufio.NewReader(stdout).ReadString('\n')
	if err != nil {
		c.Fatal(err)
	}
	if strings.TrimSpace(out) != "hello" {
		c.Fatalf("expected 'hello', got %q", out)
	}

	// escape sequence
	if _, err := cpty.Write(keyCtrlA); err != nil {
		c.Fatal(err)
	}
	time.Sleep(100 * time.Millisecond)
	if _, err := cpty.Write(keyA); err != nil {
		c.Fatal(err)
	}

	ch := make(chan struct{})
	go func() {
		cmd.Wait()
		ch <- struct{}{}
	}()

	select {
	case <-ch:
	case <-time.After(10 * time.Second):
		c.Fatal("timed out waiting for container to exit")
	}

	running := inspectField(c, name, "State.Running")
	c.Assert(running, checker.Equals, "true", check.Commentf("expected container to still be running"))
}

func (s *DockerSuite) TestHelpTextVerify(c *check.C) {
	testRequires(c, DaemonIsLinux)

	// Make sure main help text fits within 80 chars and that
	// on non-windows system we use ~ when possible (to shorten things).
	// Test for HOME set to its default value and set to "/" on linux
	// Yes on windows setting up an array and looping (right now) isn't
	// necessary because we just have one value, but we'll need the
	// array/loop on linux so we might as well set it up so that we can
	// test any number of home dirs later on and all we need to do is
	// modify the array - the rest of the testing infrastructure should work
	homes := []string{homedir.Get()}

	// Non-Windows machines need to test for this special case of $HOME
	if runtime.GOOS != "windows" {
		homes = append(homes, "/")
	}

	homeKey := homedir.Key()
	baseEnvs := appendBaseEnv(true)

	// Remove HOME env var from list so we can add a new value later.
	for i, env := range baseEnvs {
		if strings.HasPrefix(env, homeKey+"=") {
			baseEnvs = append(baseEnvs[:i], baseEnvs[i+1:]...)
			break
		}
	}

	for _, home := range homes {

		// Dup baseEnvs and add our new HOME value
		newEnvs := make([]string, len(baseEnvs)+1)
		copy(newEnvs, baseEnvs)
		newEnvs[len(newEnvs)-1] = homeKey + "=" + home

		scanForHome := runtime.GOOS != "windows" && home != "/"

		// Check main help text to make sure its not over 80 chars
		helpCmd := exec.Command(dockerBinary, "help")
		helpCmd.Env = newEnvs
		out, _, err := runCommandWithOutput(helpCmd)
		c.Assert(err, checker.IsNil, check.Commentf(out))
		lines := strings.Split(out, "\n")
		foundTooLongLine := false
		for _, line := range lines {
			if !foundTooLongLine && len(line) > 80 {
				c.Logf("Line is too long:\n%s", line)
				foundTooLongLine = true
			}
			// All lines should not end with a space
			c.Assert(line, checker.Not(checker.HasSuffix), " ", check.Commentf("Line should not end with a space"))

			if scanForHome && strings.Contains(line, `=`+home) {
				c.Fatalf("Line should use '%q' instead of %q:\n%s", homedir.GetShortcutString(), home, line)
			}
			if runtime.GOOS != "windows" {
				i := strings.Index(line, homedir.GetShortcutString())
				if i >= 0 && i != len(line)-1 && line[i+1] != '/' {
					c.Fatalf("Main help should not have used home shortcut:\n%s", line)
				}
			}
		}

		// Make sure each cmd's help text fits within 90 chars and that
		// on non-windows system we use ~ when possible (to shorten things).
		// Pull the list of commands from the "Commands:" section of docker help
		helpCmd = exec.Command(dockerBinary, "help")
		helpCmd.Env = newEnvs
		out, _, err = runCommandWithOutput(helpCmd)
		c.Assert(err, checker.IsNil, check.Commentf(out))
		i := strings.Index(out, "Commands:")
		c.Assert(i, checker.GreaterOrEqualThan, 0, check.Commentf("Missing 'Commands:' in:\n%s", out))

		cmds := []string{}
		// Grab all chars starting at "Commands:"
		helpOut := strings.Split(out[i:], "\n")
		// First line is just "Commands:"
		if isLocalDaemon {
			// Replace first line with "daemon" command since it's not part of the list of commands.
			helpOut[0] = " daemon"
		} else {
			// Skip first line
			helpOut = helpOut[1:]
		}

		// Create the list of commands we want to test
		cmdsToTest := []string{}
		for _, cmd := range helpOut {
			// Stop on blank line or non-idented line
			if cmd == "" || !unicode.IsSpace(rune(cmd[0])) {
				break
			}

			// Grab just the first word of each line
			cmd = strings.Split(strings.TrimSpace(cmd), " ")[0]
			cmds = append(cmds, cmd) // Saving count for later

			cmdsToTest = append(cmdsToTest, cmd)
		}
//.........这里部分代码省略.........

func TestHelpTextVerify(t *testing.T) {
	// Make sure main help text fits within 80 chars and that
	// on non-windows system we use ~ when possible (to shorten things).
	// Test for HOME set to its default value and set to "/" on linux
	// Yes on windows setting up an array and looping (right now) isn't
	// necessary because we just have one value, but we'll need the
	// array/loop on linux so we might as well set it up so that we can
	// test any number of home dirs later on and all we need to do is
	// modify the array - the rest of the testing infrastructure should work
	homes := []string{homedir.Get()}

	// Non-Windows machines need to test for this special case of $HOME
	if runtime.GOOS != "windows" {
		homes = append(homes, "/")
	}

	homeKey := homedir.Key()
	baseEnvs := os.Environ()

	// Remove HOME env var from list so we can add a new value later.
	for i, env := range baseEnvs {
		if strings.HasPrefix(env, homeKey+"=") {
			baseEnvs = append(baseEnvs[:i], baseEnvs[i+1:]...)
			break
		}
	}

	for _, home := range homes {
		// Dup baseEnvs and add our new HOME value
		newEnvs := make([]string, len(baseEnvs)+1)
		copy(newEnvs, baseEnvs)
		newEnvs[len(newEnvs)-1] = homeKey + "=" + home

		scanForHome := runtime.GOOS != "windows" && home != "/"

		// Check main help text to make sure its not over 80 chars
		helpCmd := exec.Command(dockerBinary, "help")
		helpCmd.Env = newEnvs
		out, ec, err := runCommandWithOutput(helpCmd)
		if err != nil || ec != 0 {
			t.Fatalf("docker help should have worked\nout:%s\nec:%d", out, ec)
		}
		lines := strings.Split(out, "\n")
		for _, line := range lines {
			if len(line) > 80 {
				t.Fatalf("Line is too long(%d chars):\n%s", len(line), line)
			}

			// All lines should not end with a space
			if strings.HasSuffix(line, " ") {
				t.Fatalf("Line should not end with a space: %s", line)
			}

			if scanForHome && strings.Contains(line, `=`+home) {
				t.Fatalf("Line should use '%q' instead of %q:\n%s", homedir.GetShortcutString(), home, line)
			}
			if runtime.GOOS != "windows" {
				i := strings.Index(line, homedir.GetShortcutString())
				if i >= 0 && i != len(line)-1 && line[i+1] != '/' {
					t.Fatalf("Main help should not have used home shortcut:\n%s", line)
				}
			}
		}

		// Make sure each cmd's help text fits within 80 chars and that
		// on non-windows system we use ~ when possible (to shorten things).
		// Pull the list of commands from the "Commands:" section of docker help
		helpCmd = exec.Command(dockerBinary, "help")
		helpCmd.Env = newEnvs
		out, ec, err = runCommandWithOutput(helpCmd)
		if err != nil || ec != 0 {
			t.Fatalf("docker help should have worked\nout:%s\nec:%d", out, ec)
		}
		i := strings.Index(out, "Commands:")
		if i < 0 {
			t.Fatalf("Missing 'Commands:' in:\n%s", out)
		}

		// Grab all chars starting at "Commands:"
		// Skip first line, its "Commands:"
		cmds := []string{}
		for _, cmd := range strings.Split(out[i:], "\n")[1:] {
			// Stop on blank line or non-idented line
			if cmd == "" || !unicode.IsSpace(rune(cmd[0])) {
				break
			}

			// Grab just the first word of each line
			cmd = strings.Split(strings.TrimSpace(cmd), " ")[0]
			cmds = append(cmds, cmd)

			helpCmd := exec.Command(dockerBinary, cmd, "--help")
			helpCmd.Env = newEnvs
			out, ec, err := runCommandWithOutput(helpCmd)
			if err != nil || ec != 0 {
				t.Fatalf("Error on %q help: %s\nexit code:%d", cmd, out, ec)
			}
			lines := strings.Split(out, "\n")
			for _, line := range lines {
				if len(line) > 80 {
//.........这里部分代码省略.........

func (s *DockerSuite) TestHelpTextVerify(c *check.C) {
	testRequires(c, DaemonIsLinux)
	// Make sure main help text fits within 80 chars and that
	// on non-windows system we use ~ when possible (to shorten things).
	// Test for HOME set to its default value and set to "/" on linux
	// Yes on windows setting up an array and looping (right now) isn't
	// necessary because we just have one value, but we'll need the
	// array/loop on linux so we might as well set it up so that we can
	// test any number of home dirs later on and all we need to do is
	// modify the array - the rest of the testing infrastructure should work
	homes := []string{homedir.Get()}

	// Non-Windows machines need to test for this special case of $HOME
	if runtime.GOOS != "windows" {
		homes = append(homes, "/")
	}

	homeKey := homedir.Key()
	baseEnvs := os.Environ()

	// Remove HOME env var from list so we can add a new value later.
	for i, env := range baseEnvs {
		if strings.HasPrefix(env, homeKey+"=") {
			baseEnvs = append(baseEnvs[:i], baseEnvs[i+1:]...)
			break
		}
	}

	for _, home := range homes {
		// Dup baseEnvs and add our new HOME value
		newEnvs := make([]string, len(baseEnvs)+1)
		copy(newEnvs, baseEnvs)
		newEnvs[len(newEnvs)-1] = homeKey + "=" + home

		scanForHome := runtime.GOOS != "windows" && home != "/"

		// Check main help text to make sure its not over 80 chars
		helpCmd := exec.Command(dockerBinary, "help")
		helpCmd.Env = newEnvs
		out, _, err := runCommandWithOutput(helpCmd)
		c.Assert(err, checker.IsNil, check.Commentf(out))
		lines := strings.Split(out, "\n")
		for _, line := range lines {
			c.Assert(len(line), checker.LessOrEqualThan, 80, check.Commentf("Line is too long:\n%s", line))

			// All lines should not end with a space
			c.Assert(line, checker.Not(checker.HasSuffix), " ", check.Commentf("Line should not end with a space"))

			if scanForHome && strings.Contains(line, `=`+home) {
				c.Fatalf("Line should use '%q' instead of %q:\n%s", homedir.GetShortcutString(), home, line)
			}
			if runtime.GOOS != "windows" {
				i := strings.Index(line, homedir.GetShortcutString())
				if i >= 0 && i != len(line)-1 && line[i+1] != '/' {
					c.Fatalf("Main help should not have used home shortcut:\n%s", line)
				}
			}
		}

		// Make sure each cmd's help text fits within 90 chars and that
		// on non-windows system we use ~ when possible (to shorten things).
		// Pull the list of commands from the "Commands:" section of docker help
		helpCmd = exec.Command(dockerBinary, "help")
		helpCmd.Env = newEnvs
		out, _, err = runCommandWithOutput(helpCmd)
		c.Assert(err, checker.IsNil, check.Commentf(out))
		i := strings.Index(out, "Commands:")
		c.Assert(i, checker.GreaterOrEqualThan, 0, check.Commentf("Missing 'Commands:' in:\n%s", out))

		cmds := []string{}
		// Grab all chars starting at "Commands:"
		helpOut := strings.Split(out[i:], "\n")
		// First line is just "Commands:"
		if isLocalDaemon {
			// Replace first line with "daemon" command since it's not part of the list of commands.
			helpOut[0] = " daemon"
		} else {
			// Skip first line
			helpOut = helpOut[1:]
		}

		// Create the list of commands we want to test
		cmdsToTest := []string{}
		for _, cmd := range helpOut {
			// Stop on blank line or non-idented line
			if cmd == "" || !unicode.IsSpace(rune(cmd[0])) {
				break
			}

			// Grab just the first word of each line
			cmd = strings.Split(strings.TrimSpace(cmd), " ")[0]
			cmds = append(cmds, cmd) // Saving count for later

			cmdsToTest = append(cmdsToTest, cmd)
		}

		// Add some 'two word' commands - would be nice to automatically
		// calculate this list - somehow
		cmdsToTest = append(cmdsToTest, "volume create")
		cmdsToTest = append(cmdsToTest, "volume inspect")
//.........这里部分代码省略.........

func (s *DockerSuite) TestHelpTextVerify(c *check.C) {
	// Make sure main help text fits within 80 chars and that
	// on non-windows system we use ~ when possible (to shorten things).
	// Test for HOME set to its default value and set to "/" on linux
	// Yes on windows setting up an array and looping (right now) isn't
	// necessary because we just have one value, but we'll need the
	// array/loop on linux so we might as well set it up so that we can
	// test any number of home dirs later on and all we need to do is
	// modify the array - the rest of the testing infrastructure should work
	homes := []string{homedir.Get()}

	// Non-Windows machines need to test for this special case of $HOME
	if runtime.GOOS != "windows" {
		homes = append(homes, "/")
	}

	homeKey := homedir.Key()
	baseEnvs := os.Environ()

	// Remove HOME env var from list so we can add a new value later.
	for i, env := range baseEnvs {
		if strings.HasPrefix(env, homeKey+"=") {
			baseEnvs = append(baseEnvs[:i], baseEnvs[i+1:]...)
			break
		}
	}

	for _, home := range homes {
		// Dup baseEnvs and add our new HOME value
		newEnvs := make([]string, len(baseEnvs)+1)
		copy(newEnvs, baseEnvs)
		newEnvs[len(newEnvs)-1] = homeKey + "=" + home

		scanForHome := runtime.GOOS != "windows" && home != "/"

		// Check main help text to make sure its not over 80 chars
		helpCmd := exec.Command(dockerBinary, "help")
		helpCmd.Env = newEnvs
		out, ec, err := runCommandWithOutput(helpCmd)
		if err != nil || ec != 0 {
			c.Fatalf("docker help should have worked\nout:%s\nec:%d", out, ec)
		}
		lines := strings.Split(out, "\n")
		for _, line := range lines {
			if len(line) > 80 {
				c.Fatalf("Line is too long(%d chars):\n%s", len(line), line)
			}

			// All lines should not end with a space
			if strings.HasSuffix(line, " ") {
				c.Fatalf("Line should not end with a space: %s", line)
			}

			if scanForHome && strings.Contains(line, `=`+home) {
				c.Fatalf("Line should use '%q' instead of %q:\n%s", homedir.GetShortcutString(), home, line)
			}
			if runtime.GOOS != "windows" {
				i := strings.Index(line, homedir.GetShortcutString())
				if i >= 0 && i != len(line)-1 && line[i+1] != '/' {
					c.Fatalf("Main help should not have used home shortcut:\n%s", line)
				}
			}
		}

		// Make sure each cmd's help text fits within 80 chars and that
		// on non-windows system we use ~ when possible (to shorten things).
		// Pull the list of commands from the "Commands:" section of docker help
		helpCmd = exec.Command(dockerBinary, "help")
		helpCmd.Env = newEnvs
		out, ec, err = runCommandWithOutput(helpCmd)
		if err != nil || ec != 0 {
			c.Fatalf("docker help should have worked\nout:%s\nec:%d", out, ec)
		}
		i := strings.Index(out, "Commands:")
		if i < 0 {
			c.Fatalf("Missing 'Commands:' in:\n%s", out)
		}

		// Grab all chars starting at "Commands:"
		// Skip first line, its "Commands:"
		cmds := []string{}
		for _, cmd := range strings.Split(out[i:], "\n")[1:] {
			var stderr string

			// Stop on blank line or non-idented line
			if cmd == "" || !unicode.IsSpace(rune(cmd[0])) {
				break
			}

			// Grab just the first word of each line
			cmd = strings.Split(strings.TrimSpace(cmd), " ")[0]
			cmds = append(cmds, cmd)

			// Check the full usage text
			helpCmd := exec.Command(dockerBinary, cmd, "--help")
			helpCmd.Env = newEnvs
			out, stderr, ec, err = runCommandWithStdoutStderr(helpCmd)
			if len(stderr) != 0 {
				c.Fatalf("Error on %q help. non-empty stderr:%q", cmd, stderr)
			}
//.........这里部分代码省略.........