func doServiceAccountAPIRequests(t *testing.T, c *client.Client, ns string, authenticated bool, canRead bool, canWrite bool) {
	testSecret := &api.Secret{
		ObjectMeta: api.ObjectMeta{Name: "testSecret"},
		Data:       map[string][]byte{"test": []byte("data")},
	}

	readOps := []testOperation{
		func() error { _, err := c.Secrets(ns).List(labels.Everything(), fields.Everything()); return err },
		func() error { _, err := c.Pods(ns).List(labels.Everything(), fields.Everything()); return err },
	}
	writeOps := []testOperation{
		func() error { _, err := c.Secrets(ns).Create(testSecret); return err },
		func() error { return c.Secrets(ns).Delete(testSecret.Name) },
	}

	for _, op := range readOps {
		err := op()
		unauthorizedError := errors.IsUnauthorized(err)
		forbiddenError := errors.IsForbidden(err)

		switch {
		case !authenticated && !unauthorizedError:
			t.Fatalf("expected unauthorized error, got %v", err)
		case authenticated && unauthorizedError:
			t.Fatalf("unexpected unauthorized error: %v", err)
		case authenticated && canRead && forbiddenError:
			t.Fatalf("unexpected forbidden error: %v", err)
		case authenticated && !canRead && !forbiddenError:
			t.Fatalf("expected forbidden error, got: %v", err)
		}
	}

	for _, op := range writeOps {
		err := op()
		unauthorizedError := errors.IsUnauthorized(err)
		forbiddenError := errors.IsForbidden(err)

		switch {
		case !authenticated && !unauthorizedError:
			t.Fatalf("expected unauthorized error, got %v", err)
		case authenticated && unauthorizedError:
			t.Fatalf("unexpected unauthorized error: %v", err)
		case authenticated && canWrite && forbiddenError:
			t.Fatalf("unexpected forbidden error: %v", err)
		case authenticated && !canWrite && !forbiddenError:
			t.Fatalf("expected forbidden error, got: %v", err)
		}
	}
}

func verifyOpenShiftUser(client *client.Client) error {
	if _, err := client.Users().Get("~"); err != nil {
		log.Errorf("Get user failed with error: %s", err)
		if kerrors.IsUnauthorized(err) || kerrors.IsForbidden(err) {
			return ErrOpenShiftAccessDenied
		}
		return err
	}

	return nil
}

// NewCmdLogin implements the OpenShift cli login command
func NewCmdLogin(fullName string, f *osclientcmd.Factory, reader io.Reader, out io.Writer) *cobra.Command {
	options := &LoginOptions{
		Reader: reader,
		Out:    out,
	}

	cmds := &cobra.Command{
		Use:     "login [URL]",
		Short:   "Log in to an OpenShift server",
		Long:    loginLong,
		Example: fmt.Sprintf(loginExample, fullName),
		Run: func(cmd *cobra.Command, args []string) {
			if err := options.Complete(f, cmd, args); err != nil {
				kcmdutil.CheckErr(err)
			}

			if err := options.Validate(args, kcmdutil.GetFlagString(cmd, "server")); err != nil {
				kcmdutil.CheckErr(err)
			}

			err := RunLogin(cmd, options)

			if kapierrors.IsUnauthorized(err) {
				fmt.Fprintln(out, "Login failed (401 Unauthorized)")

				if err, isStatusErr := err.(*kapierrors.StatusError); isStatusErr {
					if details := err.Status().Details; details != nil {
						for _, cause := range details.Causes {
							fmt.Fprintln(out, cause.Message)
						}
					}
				}

				os.Exit(1)

			} else {
				kcmdutil.CheckErr(err)
			}
		},
	}

	// Login is the only command that can negotiate a session token against the auth server using basic auth
	cmds.Flags().StringVarP(&options.Username, "username", "u", "", "Username, will prompt if not provided")
	cmds.Flags().StringVarP(&options.Password, "password", "p", "", "Password, will prompt if not provided")

	return cmds
}

func verifyPruneAccess(client *client.Client) error {
	sar := authorizationapi.SubjectAccessReview{
		Verb:     "delete",
		Resource: "images",
	}
	response, err := client.ClusterSubjectAccessReviews().Create(&sar)
	if err != nil {
		log.Errorf("OpenShift client error: %s", err)
		if kerrors.IsUnauthorized(err) || kerrors.IsForbidden(err) {
			return ErrOpenShiftAccessDenied
		}
		return err
	}
	if !response.Allowed {
		log.Errorf("OpenShift access denied: %s", response.Reason)
		return ErrOpenShiftAccessDenied
	}
	return nil
}

func verifyImageStreamAccess(namespace, imageRepo, verb string, client *client.Client) error {
	sar := authorizationapi.SubjectAccessReview{
		Verb:         verb,
		Resource:     "imagestreams/layers",
		ResourceName: imageRepo,
	}
	response, err := client.SubjectAccessReviews(namespace).Create(&sar)
	if err != nil {
		log.Errorf("OpenShift client error: %s", err)
		if kerrors.IsUnauthorized(err) || kerrors.IsForbidden(err) {
			return ErrOpenShiftAccessDenied
		}
		return err
	}
	if !response.Allowed {
		log.Errorf("OpenShift access denied: %s", response.Reason)
		return ErrOpenShiftAccessDenied
	}
	return nil
}

func TestRequestWatch(t *testing.T) {
	testCases := []struct {
		Request *Request
		Err     bool
		ErrFn   func(error) bool
		Empty   bool
	}{
		{
			Request: &Request{err: errors.New("bail")},
			Err:     true,
		},
		{
			Request: &Request{baseURL: &url.URL{}, path: "%"},
			Err:     true,
		},
		{
			Request: &Request{
				client: clientFunc(func(req *http.Request) (*http.Response, error) {
					return nil, errors.New("err")
				}),
				baseURL: &url.URL{},
			},
			Err: true,
		},
		{
			Request: &Request{
				codec: testapi.Codec(),
				client: clientFunc(func(req *http.Request) (*http.Response, error) {
					return &http.Response{StatusCode: http.StatusForbidden}, nil
				}),
				baseURL: &url.URL{},
			},
			Err: true,
			ErrFn: func(err error) bool {
				return apierrors.IsForbidden(err)
			},
		},
		{
			Request: &Request{
				codec: testapi.Codec(),
				client: clientFunc(func(req *http.Request) (*http.Response, error) {
					return &http.Response{StatusCode: http.StatusUnauthorized}, nil
				}),
				baseURL: &url.URL{},
			},
			Err: true,
			ErrFn: func(err error) bool {
				return apierrors.IsUnauthorized(err)
			},
		},
		{
			Request: &Request{
				codec: testapi.Codec(),
				client: clientFunc(func(req *http.Request) (*http.Response, error) {
					return &http.Response{
						StatusCode: http.StatusUnauthorized,
						Body: ioutil.NopCloser(bytes.NewReader([]byte(runtime.EncodeOrDie(testapi.Codec(), &api.Status{
							Status: api.StatusFailure,
							Reason: api.StatusReasonUnauthorized,
						})))),
					}, nil
				}),
				baseURL: &url.URL{},
			},
			Err: true,
			ErrFn: func(err error) bool {
				return apierrors.IsUnauthorized(err)
			},
		},
		{
			Request: &Request{
				client: clientFunc(func(req *http.Request) (*http.Response, error) {
					return nil, io.EOF
				}),
				baseURL: &url.URL{},
			},
			Empty: true,
		},
		{
			Request: &Request{
				client: clientFunc(func(req *http.Request) (*http.Response, error) {
					return nil, &url.Error{Err: io.EOF}
				}),
				baseURL: &url.URL{},
			},
			Empty: true,
		},
		{
			Request: &Request{
				client: clientFunc(func(req *http.Request) (*http.Response, error) {
					return nil, errors.New("http: can't write HTTP request on broken connection")
				}),
				baseURL: &url.URL{},
			},
			Empty: true,
		},
		{
			Request: &Request{
				client: clientFunc(func(req *http.Request) (*http.Response, error) {
					return nil, errors.New("foo: connection reset by peer")
//.........这里部分代码省略.........

func TestTransformResponse(t *testing.T) {
	invalid := []byte("aaaaa")
	uri, _ := url.Parse("http://localhost")
	testCases := []struct {
		Response *http.Response
		Data     []byte
		Created  bool
		Error    bool
		ErrFn    func(err error) bool
	}{
		{Response: &http.Response{StatusCode: 200}, Data: []byte{}},
		{Response: &http.Response{StatusCode: 201}, Data: []byte{}, Created: true},
		{Response: &http.Response{StatusCode: 199}, Error: true},
		{Response: &http.Response{StatusCode: 500}, Error: true},
		{Response: &http.Response{StatusCode: 422}, Error: true},
		{Response: &http.Response{StatusCode: 409}, Error: true},
		{Response: &http.Response{StatusCode: 404}, Error: true},
		{Response: &http.Response{StatusCode: 401}, Error: true},
		{
			Response: &http.Response{
				StatusCode: 401,
				Header:     http.Header{"Content-Type": []string{"application/json"}},
				Body:       ioutil.NopCloser(bytes.NewReader(invalid)),
			},
			Error: true,
			ErrFn: func(err error) bool {
				return err.Error() != "aaaaa" && apierrors.IsUnauthorized(err)
			},
		},
		{
			Response: &http.Response{
				StatusCode: 401,
				Header:     http.Header{"Content-Type": []string{"text/any"}},
				Body:       ioutil.NopCloser(bytes.NewReader(invalid)),
			},
			Error: true,
			ErrFn: func(err error) bool {
				return strings.Contains(err.Error(), "server has asked for the client to provide") && apierrors.IsUnauthorized(err)
			},
		},
		{Response: &http.Response{StatusCode: 403}, Error: true},
		{Response: &http.Response{StatusCode: 200, Body: ioutil.NopCloser(bytes.NewReader(invalid))}, Data: invalid},
		{Response: &http.Response{StatusCode: 200, Body: ioutil.NopCloser(bytes.NewReader(invalid))}, Data: invalid},
	}
	for i, test := range testCases {
		r := NewRequest(nil, "", uri, testapi.Version(), testapi.Codec())
		if test.Response.Body == nil {
			test.Response.Body = ioutil.NopCloser(bytes.NewReader([]byte{}))
		}
		result := r.transformResponse(test.Response, &http.Request{})
		response, created, err := result.body, result.statusCode == http.StatusCreated, result.err
		hasErr := err != nil
		if hasErr != test.Error {
			t.Errorf("%d: unexpected error: %t %v", i, test.Error, err)
		} else if hasErr && test.Response.StatusCode > 399 {
			status, ok := err.(APIStatus)
			if !ok {
				t.Errorf("%d: response should have been transformable into APIStatus: %v", i, err)
				continue
			}
			if status.Status().Code != test.Response.StatusCode {
				t.Errorf("%d: status code did not match response: %#v", i, status.Status())
			}
		}
		if test.ErrFn != nil && !test.ErrFn(err) {
			t.Errorf("%d: error function did not match: %v", i, err)
		}
		if !(test.Data == nil && response == nil) && !api.Semantic.DeepDerivative(test.Data, response) {
			t.Errorf("%d: unexpected response: %#v %#v", i, test.Data, response)
		}
		if test.Created != created {
			t.Errorf("%d: expected created %t, got %t", i, test.Created, created)
		}
	}
}

// Negotiate a bearer token with the auth server, or try to reuse one based on the
// information already present. In case of any missing information, ask for user input
// (usually username and password, interactive depending on the Reader).
func (o *LoginOptions) gatherAuthInfo() error {
	directClientConfig, err := o.getClientConfig()
	if err != nil {
		return err
	}

	// make a copy and use it to avoid mutating the original
	t := *directClientConfig
	clientConfig := &t

	// if a token were explicitly provided, try to use it
	if o.tokenProvided() {
		clientConfig.BearerToken = o.Token
		if osClient, err := client.New(clientConfig); err == nil {
			me, err := whoAmI(osClient)
			if err == nil {
				o.Username = me.Name
				o.Config = clientConfig

				fmt.Fprintf(o.Out, "Logged into %q as %q using the token provided.\n\n", o.Config.Host, o.Username)
				return nil
			}

			if !kerrors.IsUnauthorized(err) {
				return err
			}

			fmt.Fprintln(o.Out, "The token provided is invalid (probably expired).\n")
		}
	}

	// if a token was provided try to make use of it
	// make sure we have a username before continuing
	if !o.usernameProvided() {
		if cmdutil.IsTerminal(o.Reader) {
			for !o.usernameProvided() {
				o.Username = cmdutil.PromptForString(o.Reader, "Username: ")
			}
		}
	}

	// search all valid contexts with matching server stanzas to see if we have a matching user stanza
	kubeconfig := *o.StartingKubeConfig
	matchingClusters := getMatchingClusters(*clientConfig, kubeconfig)

	for key, context := range o.StartingKubeConfig.Contexts {
		if matchingClusters.Has(context.Cluster) {
			clientcmdConfig := kclientcmd.NewDefaultClientConfig(kubeconfig, &kclientcmd.ConfigOverrides{CurrentContext: key})
			if kubeconfigClientConfig, err := clientcmdConfig.ClientConfig(); err == nil {
				if osClient, err := client.New(kubeconfigClientConfig); err == nil {
					if me, err := whoAmI(osClient); err == nil && (o.Username == me.Name) {
						clientConfig.BearerToken = kubeconfigClientConfig.BearerToken
						clientConfig.CertFile = kubeconfigClientConfig.CertFile
						clientConfig.CertData = kubeconfigClientConfig.CertData
						clientConfig.KeyFile = kubeconfigClientConfig.KeyFile
						clientConfig.KeyData = kubeconfigClientConfig.KeyData

						o.Config = clientConfig

						if key == o.StartingKubeConfig.CurrentContext {
							fmt.Fprintf(o.Out, "Already logged into %q as %q.\n\n", o.Config.Host, o.Username)
						}

						return nil
					}
				}
			}
		}
	}

	// if kubeconfig doesn't already have a matching user stanza...
	clientConfig.BearerToken = ""
	clientConfig.CertData = []byte{}
	clientConfig.KeyData = []byte{}
	clientConfig.CertFile = o.CertFile
	clientConfig.KeyFile = o.KeyFile
	token, err := tokencmd.RequestToken(o.Config, o.Reader, o.Username, o.Password)
	if err != nil {
		return err
	}
	clientConfig.BearerToken = token

	osClient, err := client.New(clientConfig)
	if err != nil {
		return err
	}

	me, err := whoAmI(osClient)
	if err != nil {
		return err
	}
	o.Username = me.Name
	o.Config = clientConfig
	fmt.Fprintln(o.Out, "Login successful.\n")

	return nil
}