e2e-tests: fix test to ensure networkpolicies protection for webhooks

The current implementation is not accurate. The changes of this
commit fix the respective check.

test/e2e/v4/plugin_cluster_test.go

@@ -314,24 +314,31 @@ func Run(kbc *utils.TestContext, hasWebhook, isToUseInstaller, hasMetrics bool,
 
 	if hasWebhook && hasNetworkPolicies {
 		By("validating that webhooks from namespace without the label will fail")
-
-		// Define the namespace name and CR sample file path
 		namespace := "test-namespace-without-webhook-label"
-		sampleFile := "path/to/your/sample-file.yaml"
 
-		// Create the namespace
 		By("creating a namespace without the webhook: enabled label")
 		_, err := kbc.Kubectl.Command("create", "namespace", namespace)
 		Expect(err).NotTo(HaveOccurred(), "namespace should be created successfully")
 
-		// Apply the Custom Resource in the new namespace and expect it to fail
 		By("applying the CR in the namespace without the webhook: enabled label and expecting it to fail")
 		EventuallyWithOffset(1, func() error {
 			_, err = kbc.Kubectl.Apply(false, "-n", namespace, "-f", sampleFile)
 			return err
-		}, time.Minute, time.Second).Should(HaveOccurred(), "applying the CR should fail due to webhook call timeout")
+		}, time.Minute, time.Second).ShouldNot(HaveOccurred(), "should apply the CR")
+
+		By("validating that mutating webhooks will not work due missing webhook namespace label")
+		cnt, err := kbc.Kubectl.Get(
+			false,
+			"-n", namespace,
+			"-f", sampleFile,
+			"-o", "go-template={{ .spec.count }}")
+		ExpectWithOffset(1, err).NotTo(HaveOccurred())
+
+		count, err := strconv.Atoi(cnt)
+		ExpectWithOffset(1, err).NotTo(HaveOccurred())
+		ExpectWithOffset(1, count).To(BeNumerically("==", 1),
+			"the mutating webhook should set the count to 1 since namespace has no label")
 
-		// Cleanup: Remove the namespace
 		By("removing the namespace")
 		_, err = kbc.Kubectl.Command("delete", "namespace", namespace)
 		Expect(err).NotTo(HaveOccurred(), "namespace should be removed successfully")