all the refactor

pkg/discovery/discovery_test.go

@@ -1,6 +1,8 @@
 package discovery
 
 import (
+	"os"
+	"path/filepath"
 	"testing"
 	"time"
 
@@ -9,14 +11,27 @@ import (
 	"k8s.io/client-go/tools/clientcmd"
 )
 
-func TestDiscovery(t *testing.T) {
-	config, err := clientcmd.BuildConfigFromFlags("", "/home/mats/.kube/config")
+func kubeConfigPath(t *testing.T) string {
+	home, err := os.UserHomeDir()
 	if err != nil {
-		t.Errorf("Error building config: %v", err)
+		t.Skip("Skipping test: user home dir not found")
+	}
+	path := filepath.Join(home, ".kube", "config")
+	if _, err := os.Stat(path); os.IsNotExist(err) {
+		t.Skipf("Skipping test: %s not found", path)
+	}
+	return path
+}
+
+func TestDiscovery(t *testing.T) {
+	path := kubeConfigPath(t)
+	config, err := clientcmd.BuildConfigFromFlags("", path)
+	if err != nil {
+		t.Fatalf("Error building config: %v", err)
 	}
 	client, err := kubernetes.NewForConfig(config)
 	if err != nil {
-		t.Errorf("Error creating client: %v", err)
+		t.Fatalf("Error creating client: %v", err)
 	}
 	d := NewK8sDiscovery(client, metav1.ListOptions{
 		LabelSelector: "app",
@@ -31,13 +46,14 @@ func TestDiscovery(t *testing.T) {
 }
 
 func TestWatch(t *testing.T) {
-	config, err := clientcmd.BuildConfigFromFlags("", "/home/mats/.kube/config")
+	path := kubeConfigPath(t)
+	config, err := clientcmd.BuildConfigFromFlags("", path)
 	if err != nil {
-		t.Errorf("Error building config: %v", err)
+		t.Fatalf("Error building config: %v", err)
 	}
 	client, err := kubernetes.NewForConfig(config)
 	if err != nil {
-		t.Errorf("Error creating client: %v", err)
+		t.Fatalf("Error creating client: %v", err)
 	}
 	d := NewK8sDiscovery(client, metav1.ListOptions{
 		LabelSelector: "app",