Golang fake.Clientset类代码示例

func addUpdateRSReactor(fakeClient *fake.Clientset) *fake.Clientset {
	fakeClient.AddReactor("update", "replicasets", func(action core.Action) (handled bool, ret runtime.Object, err error) {
		obj := action.(core.UpdateAction).GetObject().(*extensions.ReplicaSet)
		return true, obj, nil
	})
	return fakeClient
}

func addUpdatePodsReactor(fakeClient *fake.Clientset) *fake.Clientset {
	fakeClient.AddReactor("update", "pods", func(action core.Action) (handled bool, ret runtime.Object, err error) {
		obj := action.(core.UpdateAction).GetObject().(*v1.Pod)
		return true, obj, nil
	})
	return fakeClient
}

func newVolumeReactor(client *fake.Clientset, ctrl *PersistentVolumeController, volumeSource *fcache.FakePVControllerSource, claimSource *fcache.FakePVCControllerSource, errors []reactorError) *volumeReactor {
	reactor := &volumeReactor{
		volumes:      make(map[string]*v1.PersistentVolume),
		claims:       make(map[string]*v1.PersistentVolumeClaim),
		ctrl:         ctrl,
		volumeSource: volumeSource,
		claimSource:  claimSource,
		errors:       errors,
	}
	client.AddReactor("*", "*", reactor.React)
	return reactor
}

func TestSyncBatchIgnoresNotFound(t *testing.T) {
	client := fake.Clientset{}
	syncer := newTestManager(&client)
	client.AddReactor("get", "pods", func(action core.Action) (bool, runtime.Object, error) {
		return true, nil, errors.NewNotFound(api.Resource("pods"), "test-pod")
	})
	syncer.SetPodStatus(getTestPod(), getRandomPodStatus())
	syncer.testSyncBatch()

	verifyActions(t, syncer.kubeClient, []core.Action{
		core.GetActionImpl{ActionImpl: core.ActionImpl{Verb: "get", Resource: schema.GroupVersionResource{Resource: "pods"}}},
	})
}

func addGetRSReactor(fakeClient *fake.Clientset, obj runtime.Object) *fake.Clientset {
	rsList, ok := obj.(*extensions.ReplicaSetList)
	fakeClient.AddReactor("get", "replicasets", func(action core.Action) (handled bool, ret runtime.Object, err error) {
		name := action.(core.GetAction).GetName()
		if ok {
			for _, rs := range rsList.Items {
				if rs.Name == name {
					return true, &rs, nil
				}
			}
		}
		return false, nil, fmt.Errorf("could not find the requested replica set: %s", name)

	})
	return fakeClient
}

//.........这里部分代码省略.........

			newRS:  rs("foo-v2", 6, nil, newTimestamp),
			oldRSs: []*extensions.ReplicaSet{rs("foo-v1", 6, nil, oldTimestamp)},

			expectedNew: rs("foo-v2", 11, nil, newTimestamp),
			expectedOld: []*extensions.ReplicaSet{rs("foo-v1", 11, nil, oldTimestamp)},
		},
		{
			name:          "change both surge and size",
			deployment:    newDeployment("foo", 50, nil, maxSurge(6), nil, nil),
			oldDeployment: newDeployment("foo", 10, nil, maxSurge(3), nil, nil),

			newRS:  rs("foo-v2", 5, nil, newTimestamp),
			oldRSs: []*extensions.ReplicaSet{rs("foo-v1", 8, nil, oldTimestamp)},

			expectedNew: rs("foo-v2", 22, nil, newTimestamp),
			expectedOld: []*extensions.ReplicaSet{rs("foo-v1", 34, nil, oldTimestamp)},
		},
		{
			name:          "change both size and template",
			deployment:    updatedTemplate(14),
			oldDeployment: newDeployment("foo", 10, nil, nil, nil, map[string]string{"foo": "bar"}),

			newRS:  nil,
			oldRSs: []*extensions.ReplicaSet{rs("foo-v2", 7, nil, newTimestamp), rs("foo-v1", 3, nil, oldTimestamp)},

			expectedNew: nil,
			expectedOld: []*extensions.ReplicaSet{rs("foo-v2", 10, nil, newTimestamp), rs("foo-v1", 4, nil, oldTimestamp)},
		},
	}

	for _, test := range tests {
		_ = olderTimestamp
		t.Log(test.name)
		fake := fake.Clientset{}
		dc := &DeploymentController{
			client:        &fake,
			eventRecorder: &record.FakeRecorder{},
		}

		if test.newRS != nil {
			desiredReplicas := *(test.oldDeployment.Spec.Replicas)
			if desired, ok := test.desiredReplicasAnnotations[test.newRS.Name]; ok {
				desiredReplicas = desired
			}
			deploymentutil.SetReplicasAnnotations(test.newRS, desiredReplicas, desiredReplicas+deploymentutil.MaxSurge(*test.oldDeployment))
		}
		for i := range test.oldRSs {
			rs := test.oldRSs[i]
			if rs == nil {
				continue
			}
			desiredReplicas := *(test.oldDeployment.Spec.Replicas)
			if desired, ok := test.desiredReplicasAnnotations[rs.Name]; ok {
				desiredReplicas = desired
			}
			deploymentutil.SetReplicasAnnotations(rs, desiredReplicas, desiredReplicas+deploymentutil.MaxSurge(*test.oldDeployment))
		}

		if err := dc.scale(test.deployment, test.newRS, test.oldRSs); err != nil {
			t.Errorf("%s: unexpected error: %v", test.name, err)
			continue
		}

		// Construct the nameToSize map that will hold all the sizes we got our of tests
		// Skip updating the map if the replica set wasn't updated since there will be
		// no update action for it.
		nameToSize := make(map[string]int32)
		if test.newRS != nil {
			nameToSize[test.newRS.Name] = *(test.newRS.Spec.Replicas)
		}
		for i := range test.oldRSs {
			rs := test.oldRSs[i]
			nameToSize[rs.Name] = *(rs.Spec.Replicas)
		}
		// Get all the UPDATE actions and update nameToSize with all the updated sizes.
		for _, action := range fake.Actions() {
			rs := action.(testclient.UpdateAction).GetObject().(*extensions.ReplicaSet)
			if !test.wasntUpdated[rs.Name] {
				nameToSize[rs.Name] = *(rs.Spec.Replicas)
			}
		}

		if test.expectedNew != nil && test.newRS != nil && *(test.expectedNew.Spec.Replicas) != nameToSize[test.newRS.Name] {
			t.Errorf("%s: expected new replicas: %d, got: %d", test.name, *(test.expectedNew.Spec.Replicas), nameToSize[test.newRS.Name])
			continue
		}
		if len(test.expectedOld) != len(test.oldRSs) {
			t.Errorf("%s: expected %d old replica sets, got %d", test.name, len(test.expectedOld), len(test.oldRSs))
			continue
		}
		for n := range test.oldRSs {
			rs := test.oldRSs[n]
			expected := test.expectedOld[n]
			if *(expected.Spec.Replicas) != nameToSize[rs.Name] {
				t.Errorf("%s: expected old (%s) replicas: %d, got: %d", test.name, rs.Name, *(expected.Spec.Replicas), nameToSize[rs.Name])
			}
		}
	}
}

func addListPodsReactor(fakeClient *fake.Clientset, obj runtime.Object) *fake.Clientset {
	fakeClient.AddReactor("list", "pods", func(action core.Action) (handled bool, ret runtime.Object, err error) {
		return true, obj, nil
	})
	return fakeClient
}

func TestDeploymentController_reconcileNewReplicaSet(t *testing.T) {
	tests := []struct {
		deploymentReplicas  int
		maxSurge            intstr.IntOrString
		oldReplicas         int
		newReplicas         int
		scaleExpected       bool
		expectedNewReplicas int
	}{
		{
			// Should not scale up.
			deploymentReplicas: 10,
			maxSurge:           intstr.FromInt(0),
			oldReplicas:        10,
			newReplicas:        0,
			scaleExpected:      false,
		},
		{
			deploymentReplicas:  10,
			maxSurge:            intstr.FromInt(2),
			oldReplicas:         10,
			newReplicas:         0,
			scaleExpected:       true,
			expectedNewReplicas: 2,
		},
		{
			deploymentReplicas:  10,
			maxSurge:            intstr.FromInt(2),
			oldReplicas:         5,
			newReplicas:         0,
			scaleExpected:       true,
			expectedNewReplicas: 7,
		},
		{
			deploymentReplicas: 10,
			maxSurge:           intstr.FromInt(2),
			oldReplicas:        10,
			newReplicas:        2,
			scaleExpected:      false,
		},
		{
			// Should scale down.
			deploymentReplicas:  10,
			maxSurge:            intstr.FromInt(2),
			oldReplicas:         2,
			newReplicas:         11,
			scaleExpected:       true,
			expectedNewReplicas: 10,
		},
	}

	for i := range tests {
		test := tests[i]
		t.Logf("executing scenario %d", i)
		newRS := rs("foo-v2", test.newReplicas, nil, noTimestamp)
		oldRS := rs("foo-v2", test.oldReplicas, nil, noTimestamp)
		allRSs := []*extensions.ReplicaSet{newRS, oldRS}
		maxUnavailable := intstr.FromInt(0)
		deployment := newDeployment("foo", test.deploymentReplicas, nil, &test.maxSurge, &maxUnavailable, map[string]string{"foo": "bar"})
		fake := fake.Clientset{}
		controller := &DeploymentController{
			client:        &fake,
			eventRecorder: &record.FakeRecorder{},
		}
		scaled, err := controller.reconcileNewReplicaSet(allRSs, newRS, deployment)
		if err != nil {
			t.Errorf("unexpected error: %v", err)
			continue
		}
		if !test.scaleExpected {
			if scaled || len(fake.Actions()) > 0 {
				t.Errorf("unexpected scaling: %v", fake.Actions())
			}
			continue
		}
		if test.scaleExpected && !scaled {
			t.Errorf("expected scaling to occur")
			continue
		}
		if len(fake.Actions()) != 1 {
			t.Errorf("expected 1 action during scale, got: %v", fake.Actions())
			continue
		}
		updated := fake.Actions()[0].(core.UpdateAction).GetObject().(*extensions.ReplicaSet)
		if e, a := test.expectedNewReplicas, int(*(updated.Spec.Replicas)); e != a {
			t.Errorf("expected update to %d replicas, got %d", e, a)
		}
	}
}

func TestDeploymentController_scaleDownOldReplicaSetsForRollingUpdate(t *testing.T) {
	tests := []struct {
		deploymentReplicas  int
		maxUnavailable      intstr.IntOrString
		readyPods           int
		oldReplicas         int
		scaleExpected       bool
		expectedOldReplicas int
	}{
		{
			deploymentReplicas:  10,
			maxUnavailable:      intstr.FromInt(0),
			readyPods:           10,
			oldReplicas:         10,
			scaleExpected:       true,
			expectedOldReplicas: 9,
		},
		{
			deploymentReplicas:  10,
			maxUnavailable:      intstr.FromInt(2),
			readyPods:           10,
			oldReplicas:         10,
			scaleExpected:       true,
			expectedOldReplicas: 8,
		},
		{
			deploymentReplicas: 10,
			maxUnavailable:     intstr.FromInt(2),
			readyPods:          8,
			oldReplicas:        10,
			scaleExpected:      false,
		},
		{
			deploymentReplicas: 10,
			maxUnavailable:     intstr.FromInt(2),
			readyPods:          10,
			oldReplicas:        0,
			scaleExpected:      false,
		},
		{
			deploymentReplicas: 10,
			maxUnavailable:     intstr.FromInt(2),
			readyPods:          1,
			oldReplicas:        10,
			scaleExpected:      false,
		},
	}

	for i := range tests {
		test := tests[i]
		t.Logf("executing scenario %d", i)
		oldRS := rs("foo-v2", test.oldReplicas, nil, noTimestamp)
		oldRS.Status.AvailableReplicas = int32(test.readyPods)
		allRSs := []*extensions.ReplicaSet{oldRS}
		oldRSs := []*extensions.ReplicaSet{oldRS}
		maxSurge := intstr.FromInt(0)
		deployment := newDeployment("foo", test.deploymentReplicas, nil, &maxSurge, &test.maxUnavailable, map[string]string{"foo": "bar"})
		fakeClientset := fake.Clientset{}
		controller := &DeploymentController{
			client:        &fakeClientset,
			eventRecorder: &record.FakeRecorder{},
		}
		scaled, err := controller.scaleDownOldReplicaSetsForRollingUpdate(allRSs, oldRSs, deployment)
		if err != nil {
			t.Errorf("unexpected error: %v", err)
			continue
		}
		if !test.scaleExpected {
			if scaled != 0 {
				t.Errorf("unexpected scaling: %v", fakeClientset.Actions())
			}
			continue
		}
		if test.scaleExpected && scaled == 0 {
			t.Errorf("expected scaling to occur; actions: %v", fakeClientset.Actions())
			continue
		}
		// There are both list and update actions logged, so extract the update
		// action for verification.
		var updateAction core.UpdateAction
		for _, action := range fakeClientset.Actions() {
			switch a := action.(type) {
			case core.UpdateAction:
				if updateAction != nil {
					t.Errorf("expected only 1 update action; had %v and found %v", updateAction, a)
				} else {
					updateAction = a
				}
			}
		}
		if updateAction == nil {
			t.Errorf("expected an update action")
			continue
		}
		updated := updateAction.GetObject().(*extensions.ReplicaSet)
		if e, a := test.expectedOldReplicas, int(*(updated.Spec.Replicas)); e != a {
			t.Errorf("expected update to %d replicas, got %d", e, a)
		}
	}
}

func TestDeploymentController_reconcileOldReplicaSets(t *testing.T) {
	tests := []struct {
		deploymentReplicas  int
		maxUnavailable      intstr.IntOrString
		oldReplicas         int
		newReplicas         int
		readyPodsFromOldRS  int
		readyPodsFromNewRS  int
		scaleExpected       bool
		expectedOldReplicas int
	}{
		{
			deploymentReplicas:  10,
			maxUnavailable:      intstr.FromInt(0),
			oldReplicas:         10,
			newReplicas:         0,
			readyPodsFromOldRS:  10,
			readyPodsFromNewRS:  0,
			scaleExpected:       true,
			expectedOldReplicas: 9,
		},
		{
			deploymentReplicas:  10,
			maxUnavailable:      intstr.FromInt(2),
			oldReplicas:         10,
			newReplicas:         0,
			readyPodsFromOldRS:  10,
			readyPodsFromNewRS:  0,
			scaleExpected:       true,
			expectedOldReplicas: 8,
		},
		{ // expect unhealthy replicas from old replica sets been cleaned up
			deploymentReplicas:  10,
			maxUnavailable:      intstr.FromInt(2),
			oldReplicas:         10,
			newReplicas:         0,
			readyPodsFromOldRS:  8,
			readyPodsFromNewRS:  0,
			scaleExpected:       true,
			expectedOldReplicas: 8,
		},
		{ // expect 1 unhealthy replica from old replica sets been cleaned up, and 1 ready pod been scaled down
			deploymentReplicas:  10,
			maxUnavailable:      intstr.FromInt(2),
			oldReplicas:         10,
			newReplicas:         0,
			readyPodsFromOldRS:  9,
			readyPodsFromNewRS:  0,
			scaleExpected:       true,
			expectedOldReplicas: 8,
		},
		{ // the unavailable pods from the newRS would not make us scale down old RSs in a further step
			deploymentReplicas: 10,
			maxUnavailable:     intstr.FromInt(2),
			oldReplicas:        8,
			newReplicas:        2,
			readyPodsFromOldRS: 8,
			readyPodsFromNewRS: 0,
			scaleExpected:      false,
		},
	}
	for i := range tests {
		test := tests[i]
		t.Logf("executing scenario %d", i)

		newSelector := map[string]string{"foo": "new"}
		oldSelector := map[string]string{"foo": "old"}
		newRS := rs("foo-new", test.newReplicas, newSelector, noTimestamp)
		newRS.Status.AvailableReplicas = int32(test.readyPodsFromNewRS)
		oldRS := rs("foo-old", test.oldReplicas, oldSelector, noTimestamp)
		oldRS.Status.AvailableReplicas = int32(test.readyPodsFromOldRS)
		oldRSs := []*extensions.ReplicaSet{oldRS}
		allRSs := []*extensions.ReplicaSet{oldRS, newRS}
		maxSurge := intstr.FromInt(0)
		deployment := newDeployment("foo", test.deploymentReplicas, nil, &maxSurge, &test.maxUnavailable, newSelector)
		fakeClientset := fake.Clientset{}
		controller := &DeploymentController{
			client:        &fakeClientset,
			eventRecorder: &record.FakeRecorder{},
		}

		scaled, err := controller.reconcileOldReplicaSets(allRSs, oldRSs, newRS, deployment)
		if err != nil {
			t.Errorf("unexpected error: %v", err)
			continue
		}
		if !test.scaleExpected && scaled {
			t.Errorf("unexpected scaling: %v", fakeClientset.Actions())
		}
		if test.scaleExpected && !scaled {
			t.Errorf("expected scaling to occur")
			continue
		}
		continue
	}
}