Use the exposed configuration of the fixtures

The fixtures now exposes the URL the API Server is listening on. We can
get this with from `Fixtures.Config.APIServerURL`.

When we start our client program in the test, we pass that API Server
URL in via a command line flag.

pkg/framework/test/democli/cmd/listPods.go

@@ -30,15 +30,25 @@ var listPodsCmd = &cobra.Command{
 	Short: "List all pods",
 	Long:  `Give a list of all pods known by the system`,
 	Run: func(cmd *cobra.Command, args []string) {
-		runGetPods()
+		apiURL, err := cmd.Flags().GetString("api-url")
+		if err != nil {
+			panic(err)
+		}
+		runGetPods(apiURL)
 	},
 }
 
-func runGetPods() {
+func runGetPods(apiURL string) {
-	config, _ := clientcmd.BuildConfigFromFlags("http://localhost:8080", "")
+	config, err := clientcmd.BuildConfigFromFlags(apiURL, "")
+	if err != nil {
+		panic(err)
+	}
 
 	// create the clientset
-	clientset, _ := kubernetes.NewForConfig(config)
+	clientset, err := kubernetes.NewForConfig(config)
+	if err != nil {
+		panic(err)
+	}
 
 	pods, err := clientset.CoreV1().Pods("").List(metav1.ListOptions{})
 	if err != nil {
@@ -55,6 +65,8 @@ func init() {
 
 	// Here you will define your flags and configuration settings.
 
+	listPodsCmd.Flags().String("api-url", "http://localhost:8080", "URL of the APIServer to connect to")
+
 	// Cobra supports Persistent Flags which will work for this command
 	// and all subcommands, e.g.:
 	// listPodsCmd.PersistentFlags().String("foo", "", "A help for foo")

pkg/framework/test/democli/integration/integration_test.go

@@ -21,7 +21,8 @@ var _ = Describe("DemoCLI Integration", func() {
 	})
 
 	It("can get a list of pods", func() {
-		command := exec.Command(pathToDemoCommand, "listPods")
+		apiURL := fixtures.Config.APIServerURL
+		command := exec.Command(pathToDemoCommand, "listPods", "--api-url", apiURL)
 		session, err := gexec.Start(command, GinkgoWriter, GinkgoWriter)
 		Expect(err).NotTo(HaveOccurred())
 		Eventually(session).Should(gexec.Exit(0))