Fix default storage class tests

test/e2e/volume_provisioning.go

@@ -303,11 +303,12 @@ var _ = framework.KubeDescribe("Dynamic provisioning", func() {
 		// Modifying the default storage class can be disruptive to other tests that depend on it
 		It("should be disabled by changing the default annotation[Slow] [Serial] [Disruptive] [Volume]", func() {
 			framework.SkipUnlessProviderIs("openstack", "gce", "aws", "gke", "vsphere")
+			scName := getDefaultStorageClassName(c)
 
 			By("setting the is-default StorageClass annotation to false")
-			verifyDefaultStorageClass(c, true)
-			defer updateDefaultStorageClass(c, "true")
-			updateDefaultStorageClass(c, "false")
+			verifyDefaultStorageClass(c, scName, true)
+			defer updateDefaultStorageClass(c, scName, "true")
+			updateDefaultStorageClass(c, scName, "false")
 
 			By("creating a claim with default storageclass and expecting it to timeout")
 			claim := newClaim(ns)
@@ -327,11 +328,12 @@ var _ = framework.KubeDescribe("Dynamic provisioning", func() {
 		// Modifying the default storage class can be disruptive to other tests that depend on it
 		It("should be disabled by removing the default annotation[Slow] [Serial] [Disruptive] [Volume]", func() {
 			framework.SkipUnlessProviderIs("openstack", "gce", "aws", "gke", "vsphere")
+			scName := getDefaultStorageClassName(c)
 
 			By("removing the is-default StorageClass annotation")
-			verifyDefaultStorageClass(c, true)
-			defer updateDefaultStorageClass(c, "true")
-			updateDefaultStorageClass(c, "")
+			verifyDefaultStorageClass(c, scName, true)
+			defer updateDefaultStorageClass(c, scName, "true")
+			updateDefaultStorageClass(c, scName, "")
 
 			By("creating a claim with default storageclass and expecting it to timeout")
 			claim := newClaim(ns)
@@ -350,14 +352,35 @@ var _ = framework.KubeDescribe("Dynamic provisioning", func() {
 	})
 })
 
-func verifyDefaultStorageClass(c clientset.Interface, expectedDefault bool) {
-	sc, err := c.StorageV1().StorageClasses().Get("default", metav1.GetOptions{})
+func getDefaultStorageClassName(c clientset.Interface) string {
+	list, err := c.StorageV1().StorageClasses().List(metav1.ListOptions{})
+	if err != nil {
+		framework.Failf("Error listing storage classes: %v", err)
+	}
+	var scName string
+	for _, sc := range list.Items {
+		if storageutil.IsDefaultAnnotation(sc.ObjectMeta) {
+			if len(scName) != 0 {
+				framework.Failf("Multiple default storage classes found: %q and %q", scName, sc.Name)
+			}
+			scName = sc.Name
+		}
+	}
+	if len(scName) == 0 {
+		framework.Failf("No default storage class found")
+	}
+	framework.Logf("Default storage class: %q", scName)
+	return scName
+}
+
+func verifyDefaultStorageClass(c clientset.Interface, scName string, expectedDefault bool) {
+	sc, err := c.StorageV1().StorageClasses().Get(scName, metav1.GetOptions{})
 	Expect(err).NotTo(HaveOccurred())
 	Expect(storageutil.IsDefaultAnnotation(sc.ObjectMeta)).To(Equal(expectedDefault))
 }
 
-func updateDefaultStorageClass(c clientset.Interface, defaultStr string) {
-	sc, err := c.StorageV1().StorageClasses().Get("default", metav1.GetOptions{})
+func updateDefaultStorageClass(c clientset.Interface, scName string, defaultStr string) {
+	sc, err := c.StorageV1().StorageClasses().Get(scName, metav1.GetOptions{})
 	Expect(err).NotTo(HaveOccurred())
 
 	if defaultStr == "" {
@@ -376,7 +399,7 @@ func updateDefaultStorageClass(c clientset.Interface, defaultStr string) {
 	if defaultStr == "true" {
 		expectedDefault = true
 	}
-	verifyDefaultStorageClass(c, expectedDefault)
+	verifyDefaultStorageClass(c, scName, expectedDefault)
 }
 
 func newClaim(ns string) *v1.PersistentVolumeClaim {