Function TestServerSupportsVersion

discovery/helper_blackbox_test.go:48–113

(t *testing.T)

}

func TestServerSupportsVersion(t *testing.T) {
	tests := []struct {
		name            string
		requiredVersion schema.GroupVersion
		serverVersions  []string
		expectErr       func(err error) bool
		sendErr         error
		statusCode      int
	}{
		{
			name:            "explicit version supported",
			requiredVersion: schema.GroupVersion{Version: "v1"},
			serverVersions:  []string{"/version1", v1.SchemeGroupVersion.String()},
			statusCode:      http.StatusOK,
		},
		{
			name:            "explicit version not supported on server",
			requiredVersion: schema.GroupVersion{Version: "v1"},
			serverVersions:  []string{"version1"},
			expectErr:       func(err error) bool { return strings.Contains(err.Error(), `server does not support API version "v1"`) },
			statusCode:      http.StatusOK,
		},
		{
			name:           "connection refused error",
			serverVersions: []string{"version1"},
			sendErr:        errors.New("connection refused"),
			expectErr:      func(err error) bool { return strings.Contains(err.Error(), "connection refused") },
			statusCode:     http.StatusOK,
		},
		{
			name:            "discovery fails due to 404 Not Found errors and thus serverVersions is empty, use requested GroupVersion",
			requiredVersion: schema.GroupVersion{Version: "version1"},
			statusCode:      http.StatusNotFound,
		},
	}

	for _, test := range tests {
		fakeClient := &fake.RESTClient{
			NegotiatedSerializer: scheme.Codecs,
			Resp: &http.Response{
				StatusCode: test.statusCode,
				Body:       objBody(&metav1.APIVersions{Versions: test.serverVersions}),
			},
			Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
				if test.sendErr != nil {
					return nil, test.sendErr
				}
				header := http.Header{}
				header.Set("Content-Type", runtime.ContentTypeJSON)
				return &http.Response{StatusCode: test.statusCode, Header: header, Body: objBody(&metav1.APIVersions{Versions: test.serverVersions})}, nil
			}),
		}
		c := discovery.NewDiscoveryClientForConfigOrDie(&restclient.Config{})
		c.RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
		err := discovery.ServerSupportsVersion(c, test.requiredVersion)
		if err == nil && test.expectErr != nil {
			t.Errorf("expected error, got nil for [%s].", test.name)
		}