Code change:
t.Errorf("RunDeleteToken() succeeded for an invalid token: %v", err) } } <del> var httpTestItr uint32 var httpSentResponse uint32 = 1 func TestRunListTokens(t *testing.T) { var err error var bufOut, bufErr bytes.Buffer tmpDir, err := ioutil.TempDir("", "kubeadm-token-test") if err != nil { t.Errorf("Unable to create temporary directory: %v", err) } defer os.RemoveAll(tmpDir) fullPath := filepath.Join(tmpDir, "test-config-file") f, err := os.Create(fullPath) if err != nil { t.Errorf("Unable to create test file %q: %v", fullPath, err) } defer f.Close() // test config without secrets; should fail if _, err = f.WriteString(testConfigToken); err != nil { t.Errorf("Unable to write test file %q: %v", fullPath, err) } client, err := getClientset(fullPath, true) if err != nil { t.Errorf("Unable to run getClientset() for test file %q: %v", fullPath, err) } if err = RunListTokens(&bufOut, &bufErr, client); err == nil { t.Errorf("RunListTokens() did not fail for a config without secrets: %v", err) } // test config without secrets but use a dummy API server that returns secrets portString := "9008" http.HandleFunc("/", httpHandler) httpServer := &http.Server{Addr: "localhost:" + portString} go func() { err := httpServer.ListenAndServe() if err != nil { t.Errorf("Failed to start dummy API server: localhost:%s", portString) } }() fmt.Printf("dummy API server listening on localhost:%sn", portString) testConfigTokenOpenPort := strings.Replace(testConfigToken, "server: localhost:8000", "server: localhost:"+portString, -1) if _, err = f.WriteString(testConfigTokenOpenPort); err != nil { t.Errorf("Unable to write test file %q: %v", fullPath, err) } client, err = getClientset(fullPath, true) if err != nil { t.Errorf("Unable to run getClientset() for test file %q: %v", fullPath, err) } // the order of these tests should match the case check // for httpTestItr in httpHandler testCases := []struct { name          string expectedError bool }{ { name:          "token-id not defined", expectedError: true, }, { name:          "secret name not formatted correctly", expectedError: true, }, { name:          "token-secret not defined", expectedError: true, }, { name:          "token expiration not formatted correctly", expectedError: true, }, { name:          "token expiration formatted correctly", expectedError: false, }, { name:          "token usage constant not true", expectedError: false, }, { name:          "token usage constant set to true", expectedError: false, }, } for _, tc := range testCases { bufErr.Reset() atomic.StoreUint32(&httpSentResponse, 0) fmt.Printf("Running HTTP test case (%d) %qn", atomic.LoadUint32(&httpTestItr), tc.name) // should always return nil here if a valid list of secrets if fetched err := RunListTokens(&bufOut, &bufErr, client) if err != nil { t.Errorf("HTTP test case %d: Was unable to fetch a list of secrets", atomic.LoadUint32(&httpTestItr)) } // wait for a response from the dummy HTTP server timeSpent := 0 * time.Millisecond timeToSleep := 50 * time.Millisecond timeMax := 2000 * time.Millisecond for { if atomic.LoadUint32(&httpSentResponse) == 1 { break } if timeSpent >= timeMax { t.Errorf("HTTP test case %d: The server did not respond within %d ms", atomic.LoadUint32(&httpTestItr), timeMax) } timeSpent += timeToSleep time.Sleep(timeToSleep) } // check if an error is written in the error buffer hasError := bufErr.Len() != 0 if hasError != tc.expectedError { t.Errorf("HTTP test case %d: RunListTokens expected error: %v, saw: %v; %v", atomic.LoadUint32(&httpTestItr), tc.expectedError, hasError, bufErr.String()) } } } // only one of these should run at a time in a goroutine func httpHandler(w http.ResponseWriter, r *http.Request) { tokenID := []byte("07401b") tokenSecret := []byte("f395accd246ae52d") tokenExpire := []byte("2012-11-01T22:08:41+00:00") badValue := "bad-value" name := bootstrapapi.BootstrapTokenSecretPrefix + string(tokenID) tokenUsageKey := bootstrapapi.BootstrapTokenUsagePrefix + "test" secret := v1.Secret{} secret.Type = bootstrapapi.SecretTypeBootstrapToken secret.TypeMeta = metav1.TypeMeta{APIVersion: "v1", Kind: "Secret"} secret.Data = map[string][]byte{} switch atomic.LoadUint32(&httpTestItr) { case 0: secret.Data[bootstrapapi.BootstrapTokenIDKey] = []byte("") case 1: secret.Data[bootstrapapi.BootstrapTokenIDKey] = tokenID secret.ObjectMeta = metav1.ObjectMeta{Name: badValue} case 2: secret.Data[bootstrapapi.BootstrapTokenIDKey] = tokenID secret.Data[bootstrapapi.BootstrapTokenSecretKey] = []byte("") secret.ObjectMeta = metav1.ObjectMeta{Name: name} case 3: secret.Data[bootstrapapi.BootstrapTokenIDKey] = tokenID secret.Data[bootstrapapi.BootstrapTokenSecretKey] = tokenSecret secret.Data[bootstrapapi.BootstrapTokenExpirationKey] = []byte(badValue) secret.ObjectMeta = metav1.ObjectMeta{Name: name} case 4: secret.Data[bootstrapapi.BootstrapTokenIDKey] = tokenID secret.Data[bootstrapapi.BootstrapTokenSecretKey] = tokenSecret secret.Data[bootstrapapi.BootstrapTokenExpirationKey] = tokenExpire secret.ObjectMeta = metav1.ObjectMeta{Name: name} case 5: secret.Data[bootstrapapi.BootstrapTokenIDKey] = tokenID secret.Data[bootstrapapi.BootstrapTokenSecretKey] = tokenSecret secret.Data[bootstrapapi.BootstrapTokenExpirationKey] = tokenExpire secret.Data[tokenUsageKey] = []byte("false") secret.ObjectMeta = metav1.ObjectMeta{Name: name} case 6: secret.Data[bootstrapapi.BootstrapTokenIDKey] = tokenID secret.Data[bootstrapapi.BootstrapTokenSecretKey] = tokenSecret secret.Data[bootstrapapi.BootstrapTokenExpirationKey] = tokenExpire secret.Data[tokenUsageKey] = []byte("true") secret.ObjectMeta = metav1.ObjectMeta{Name: name} } secretList := v1.SecretList{} secretList.Items = []v1.Secret{secret} secretList.TypeMeta = metav1.TypeMeta{APIVersion: "v1", Kind: "SecretList"} output, err := json.Marshal(secretList) if err == nil { w.Header().Set("Content-Type", "application/json") w.WriteHeader(200) w.Write([]byte(output)) } atomic.AddUint32(&httpTestItr, 1) atomic.StoreUint32(&httpSentResponse, 1) } </del>

Related discussion:
text: Just got this while running the tests:
let's please move this to /close /sig cluster-lifecycle