Allow a test suite reusing framework to register namespaces to delete

test/e2e/framework/framework.go

@@ -399,10 +399,7 @@ func (f *Framework) CreateNamespace(baseName string, labels map[string]string) (
 	ns, err := createTestingNS(baseName, f.ClientSet, labels)
 	// check ns instead of err to see if it's nil as we may
 	// fail to create serviceAccount in it.
-	// In this case, we should not forget to delete the namespace.
-	if ns != nil {
-		f.namespacesToDelete = append(f.namespacesToDelete, ns)
-	}
+	f.AddNamespacesToDelete(ns)
 
 	if err == nil && !f.SkipPrivilegedPSPBinding {
 		CreatePrivilegedPSPBinding(f, ns.Name)
@@ -411,6 +408,18 @@ func (f *Framework) CreateNamespace(baseName string, labels map[string]string) (
 	return ns, err
 }
 
+// AddNamespacesToDelete adds one or more namespaces to be deleted when the test
+// completes.
+func (f *Framework) AddNamespacesToDelete(namespaces ...*v1.Namespace) {
+	for _, ns := range namespaces {
+		if ns == nil {
+			continue
+		}
+		f.namespacesToDelete = append(f.namespacesToDelete, ns)
+
+	}
+}
+
 // WaitForPodTerminated waits for the pod to be terminated with the given reason.
 func (f *Framework) WaitForPodTerminated(podName, reason string) error {
 	return waitForPodTerminatedInNamespace(f.ClientSet, podName, reason, f.Namespace.Name)