📖 Update test examples not to set Status on create (#4016)

Update test examples not to set Status on create

Author: hsadoyan

docs/book/src/cronjob-tutorial/testdata/project/internal/controller/cronjob_controller_test.go

@@ -163,9 +163,6 @@ var _ = Describe("CronJob controller", func() {
 						},
 					},
 				},
-				Status: batchv1.JobStatus{
-					Active: 2,
-				},
 			}
 
 			// Note that your CronJob’s GroupVersionKind is required to set up this owner reference.
@@ -175,6 +172,13 @@ var _ = Describe("CronJob controller", func() {
 			controllerRef := metav1.NewControllerRef(createdCronjob, gvk)
 			testJob.SetOwnerReferences([]metav1.OwnerReference{*controllerRef})
 			Expect(k8sClient.Create(ctx, testJob)).Should(Succeed())
+			// Note that you can not manage the status values while creating the resource. 
+			// The status field is managed separately to reflect the current state of the resource. 
+			// Therefore, it should be updated using a PATCH or PUT operation after the resource has been created.
+			// Additionally, it is recommended to use StatusConditions to manage the status. For further information see: 
+			// https://github.com/kubernetes/community/blob/master/contributors/devel/sig-architecture/api-conventions.md#spec-and-status
+			testJob.Status.Active = 2
+			Expect(k8sClient.Status().Update(ctx, testJob)).Should(Succeed())
 			/*
 				Adding this Job to our test CronJob should trigger our controller’s reconciler logic.
 				After that, we can write a test that evaluates whether our controller eventually updates our CronJob’s Status field as expected!

hack/docs/internal/cronjob-tutorial/writing_tests_controller.go

@@ -182,9 +182,6 @@ var _ = Describe("CronJob controller", func() {
 						},
 					},
 				},
-				Status: batchv1.JobStatus{
-					Active: 2,
-				},
 			}
 
 			// Note that your CronJob’s GroupVersionKind is required to set up this owner reference.
@@ -194,6 +191,13 @@ var _ = Describe("CronJob controller", func() {
 			controllerRef := metav1.NewControllerRef(createdCronjob, gvk)
 			testJob.SetOwnerReferences([]metav1.OwnerReference{*controllerRef})
 			Expect(k8sClient.Create(ctx, testJob)).Should(Succeed())
+			// Note that you can not manage the status values while creating the resource. 
+			// The status field is managed separately to reflect the current state of the resource. 
+			// Therefore, it should be updated using a PATCH or PUT operation after the resource has been created.
+			// Additionally, it is recommended to use StatusConditions to manage the status. For further information see: 
+			// https://github.com/kubernetes/community/blob/master/contributors/devel/sig-architecture/api-conventions.md#spec-and-status
+			testJob.Status.Active = 2
+			Expect(k8sClient.Status().Update(ctx, testJob)).Should(Succeed())
 			/*
 				Adding this Job to our test CronJob should trigger our controller’s reconciler logic.
 				After that, we can write a test that evaluates whether our controller eventually updates our CronJob’s Status field as expected!