Status: apps.StatefulSetStatus{Replicas: 4},
		}
		Strategy.PrepareForUpdate(ctx, validPs, ps)
		errs = Strategy.ValidateUpdate(ctx, validPs, ps)
		if len(errs) != 0 {
			t.Errorf("updating spec.Replicas and minReadySeconds is allowed on a statefulset: %v", errs)
		}
		invalidPs := ps
		invalidPs.Spec.MinReadySeconds = int32(-1)
		Strategy.PrepareForUpdate(ctx, validPs, invalidPs)
		errs = Strategy.ValidateUpdate(ctx, validPs, ps)

		},
	}

	// Nothing in Spec changes: OK
	Strategy.PrepareForUpdate(ctx, newPdb, pdb)
	errs = Strategy.ValidateUpdate(ctx, newPdb, pdb)
	if len(errs) != 0 {
		t.Errorf("Unexpected error updating PodDisruptionBudget.")
	}

	// Changing the selector?  OK
	newPdb.Spec.Selector = &metav1.LabelSelector{MatchLabels: map[string]string{"a": "bar"}}
	Strategy.PrepareForUpdate(ctx, newPdb, pdb)

			Schedule: "5 5 5 * ?",
		},
		Status: batch.CronJobStatus{
			LastScheduleTime: &now,
		},
	}

	// ensure we do not change status
	Strategy.PrepareForUpdate(ctx, updatedCronJob, cronJob)
	if updatedCronJob.Status.Active != nil {
		t.Errorf("PrepareForUpdate should have preserved prior version status")
	}
	if updatedCronJob.Generation != 2 {
		t.Errorf("expected Generation=2, got %d", updatedCronJob.Generation)
	}

	service := obj.(*api.Service)
	service.Status = api.ServiceStatus{}

	dropServiceDisabledFields(service, nil)
}

// PrepareForUpdate sets contextual defaults and clears fields that are not allowed to be set by end users on update.
func (svcStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
	newService := obj.(*api.Service)
	oldService := old.(*api.Service)
	newService.Status = oldService.Status

	}

	// Update of spec is disallowed
	newCSIDriver := csiDriver.DeepCopy()
	attachNotRequired := false
	newCSIDriver.Spec.AttachRequired = &attachNotRequired

	Strategy.PrepareForUpdate(ctx, newCSIDriver, csiDriver)

	errs = Strategy.ValidateUpdate(ctx, newCSIDriver, csiDriver)
	if len(errs) == 0 {
		t.Errorf("Expected a validation error")
	}
}

			featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.PersistentVolumeLastPhaseTransitionTime, tc.fg)

			obj := tc.newObj.DeepCopy()
			StatusStrategy.PrepareForUpdate(context.TODO(), obj, tc.oldObj.DeepCopy())
			if !reflect.DeepEqual(obj, tc.expectedObj) {
				t.Errorf("object diff: %s", cmp.Diff(obj, tc.expectedObj))
			}
		})
	}
}

			newPvcHasConditions, newPvc := newPvcInfo.hasConditions, newPvcInfo.pvc()

			t.Run(fmt.Sprintf("old pvc %s, new pvc %s", oldPvcInfo.description, newPvcInfo.description), func(t *testing.T) {
				StatusStrategy.PrepareForUpdate(ctx, newPvc, oldPvc)

				// old pvc should never be changed
				if !reflect.DeepEqual(oldPvc, oldPvcInfo.pvc()) {
					t.Errorf("old pvc changed: %v", cmp.Diff(oldPvc, oldPvcInfo.pvc()))
				}

				switch {

				},
			},
		},
	}
	StatusStrategy.PrepareForUpdate(ctx, newService, oldService)
	if newService.Status.LoadBalancer.Ingress[0].IP != "127.0.0.2" {
		t.Errorf("Service status updates should allow change of status fields")
	}
	if newService.Spec.SessionAffinity != "None" {
		t.Errorf("PrepareForUpdate should have preserved old spec")
	}

}

// DropDisabledTemplateFields removes disabled fields from the pod template metadata and spec.
// This should be called from PrepareForCreate/PrepareForUpdate for all resources containing a PodTemplateSpec
func DropDisabledTemplateFields(podTemplate, oldPodTemplate *api.PodTemplateSpec) {
	var (
		podSpec           *api.PodSpec
		podAnnotations    map[string]string

				},
				Endpoints: []discovery.Endpoint{{
					Addresses: []string{"1.2.3.4"},
				}},
			},
		},
	}

	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			Strategy.PrepareForUpdate(context.TODO(), tc.newEPS, tc.oldEPS)
			if !apiequality.Semantic.DeepEqual(tc.newEPS, tc.expectedEPS) {
				t.Errorf("Expected %+v\nGot: %+v", tc.expectedEPS, tc.newEPS)
			}
		})
	}
}