Add a check in ConfirmUsable() to validate the contextName

test/integration/kubectl/kubectl_test.go

@@ -49,12 +49,13 @@ func TestKubectlValidation(t *testing.T) {
 	// Enable swagger api on master.
 	components.KubeMaster.InstallSwaggerAPI()
 	cluster := clientcmdapi.NewCluster()
+
 	cluster.Server = components.ApiServer.URL
 	cluster.InsecureSkipTLSVerify = true
+	cfg.Contexts = map[string]*clientcmdapi.Context{"test": ctx}
+	cfg.CurrentContext = "test"
 	overrides := clientcmd.ConfigOverrides{
-		ClusterInfo:    *cluster,
-		Context:        *ctx,
-		CurrentContext: "test",
+		ClusterInfo: *cluster,
 	}
 	cmdConfig := clientcmd.NewNonInteractiveClientConfig(*cfg, "test", &overrides, nil)
 	factory := util.NewFactory(cmdConfig)