Federated Namespace Controller test

federation/pkg/federation-controller/namespace/namespace_controller_test.go

@@ -0,0 +1,173 @@
+/*
+Copyright 2016 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package namespace
+
+import (
+	"fmt"
+	"testing"
+	"time"
+
+	federation_api "k8s.io/kubernetes/federation/apis/federation/v1beta1"
+	federation_release_1_4 "k8s.io/kubernetes/federation/client/clientset_generated/federation_release_1_4"
+	fake_federation_release_1_4 "k8s.io/kubernetes/federation/client/clientset_generated/federation_release_1_4/fake"
+	"k8s.io/kubernetes/federation/pkg/federation-controller/util"
+	api_v1 "k8s.io/kubernetes/pkg/api/v1"
+	"k8s.io/kubernetes/pkg/client/testing/core"
+	"k8s.io/kubernetes/pkg/runtime"
+	"k8s.io/kubernetes/pkg/watch"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNamespaceController(t *testing.T) {
+	cluster1 := mkCluster("cluster1", api_v1.ConditionTrue)
+	cluster2 := mkCluster("cluster2", api_v1.ConditionTrue)
+
+	fakeClient := &fake_federation_release_1_4.Clientset{}
+	RegisterList("clusters", fakeClient, &federation_api.ClusterList{Items: []federation_api.Cluster{*cluster1}})
+	RegisterList("namespaces", fakeClient, &api_v1.NamespaceList{Items: []api_v1.Namespace{}})
+	namespaceWatch := RegisterWatch("namespaces", fakeClient)
+	clusterWatch := RegisterWatch("clusters", fakeClient)
+
+	cluster1Client := &fake_federation_release_1_4.Clientset{}
+	cluster1Watch := RegisterWatch("namespaces", cluster1Client)
+	RegisterList("namespaces", cluster1Client, &api_v1.NamespaceList{Items: []api_v1.Namespace{}})
+	cluster1CreateChan := RegisterCopyOnCreate("namespaces", cluster1Client, cluster1Watch)
+	cluster1UpdateChan := RegisterCopyOnUpdate("namespaces", cluster1Client, cluster1Watch)
+
+	cluster2Client := &fake_federation_release_1_4.Clientset{}
+	cluster2Watch := RegisterWatch("namespaces", cluster2Client)
+	RegisterList("namespaces", cluster2Client, &api_v1.NamespaceList{Items: []api_v1.Namespace{}})
+	cluster2CreateChan := RegisterCopyOnCreate("namespaces", cluster2Client, cluster2Watch)
+
+	namespaceController := NewNamespaceController(fakeClient)
+	informer := toFederatedInformerForTestOnly(namespaceController.namespaceFederatedInformer)
+	informer.SetClientFactory(func(cluster *federation_api.Cluster) (federation_release_1_4.Interface, error) {
+		switch cluster.Name {
+		case cluster1.Name:
+			return cluster1Client, nil
+		case cluster2.Name:
+			return cluster2Client, nil
+		default:
+			return nil, fmt.Errorf("Unknown cluster")
+		}
+	})
+	namespaceController.clusterAvailableDelay = 1000 * time.Millisecond
+	namespaceController.namespaceReviewDelay = 50 * time.Millisecond
+	namespaceController.smallDelay = 20 * time.Millisecond
+	namespaceController.updateTimeout = 5 * time.Second
+	namespaceController.Start()
+
+	ns1 := api_v1.Namespace{
+		ObjectMeta: api_v1.ObjectMeta{
+			Name: "test-namespace",
+		},
+	}
+
+	// Test add federated namespace.
+	namespaceWatch.Add(&ns1)
+	createdNamespace := GetNamespaceFromChan(cluster1CreateChan)
+	assert.NotNil(t, createdNamespace)
+	assert.Equal(t, ns1.Name, createdNamespace.Name)
+
+	// Test update federated namespace.
+	ns1.Annotations = map[string]string{
+		"A": "B",
+	}
+	namespaceWatch.Modify(&ns1)
+	updatedNamespace := GetNamespaceFromChan(cluster1UpdateChan)
+	assert.NotNil(t, updatedNamespace)
+	assert.Equal(t, ns1.Name, updatedNamespace.Name)
+	// assert.Contains(t, updatedNamespace.Annotations, "A")
+
+	// Test add cluster
+	clusterWatch.Add(cluster2)
+	createdNamespace2 := GetNamespaceFromChan(cluster2CreateChan)
+	assert.NotNil(t, createdNamespace2)
+	assert.Equal(t, ns1.Name, createdNamespace2.Name)
+	// assert.Contains(t, createdNamespace2.Annotations, "A")
+
+	namespaceController.Stop()
+}
+
+func toFederatedInformerForTestOnly(informer util.FederatedInformer) util.FederatedInformerForTestOnly {
+	inter := informer.(interface{})
+	return inter.(util.FederatedInformerForTestOnly)
+}
+
+func mkCluster(name string, readyStatus api_v1.ConditionStatus) *federation_api.Cluster {
+	return &federation_api.Cluster{
+		ObjectMeta: api_v1.ObjectMeta{
+			Name: name,
+		},
+		Status: federation_api.ClusterStatus{
+			Conditions: []federation_api.ClusterCondition{
+				{Type: federation_api.ClusterReady, Status: readyStatus},
+			},
+		},
+	}
+}
+
+func RegisterWatch(resource string, client *fake_federation_release_1_4.Clientset) *watch.FakeWatcher {
+	watcher := watch.NewFake()
+	client.AddWatchReactor(resource, func(action core.Action) (bool, watch.Interface, error) { return true, watcher, nil })
+	return watcher
+}
+
+func RegisterList(resource string, client *fake_federation_release_1_4.Clientset, obj runtime.Object) {
+	client.AddReactor("list", resource, func(action core.Action) (bool, runtime.Object, error) {
+		return true, obj, nil
+	})
+}
+
+func RegisterCopyOnCreate(resource string, client *fake_federation_release_1_4.Clientset, watcher *watch.FakeWatcher) chan runtime.Object {
+	objChan := make(chan runtime.Object, 100)
+	client.AddReactor("create", resource, func(action core.Action) (bool, runtime.Object, error) {
+		createAction := action.(core.CreateAction)
+		obj := createAction.GetObject()
+		go func() {
+			watcher.Add(obj)
+			objChan <- obj
+		}()
+		return true, obj, nil
+	})
+	return objChan
+}
+
+func RegisterCopyOnUpdate(resource string, client *fake_federation_release_1_4.Clientset, watcher *watch.FakeWatcher) chan runtime.Object {
+	objChan := make(chan runtime.Object, 100)
+	client.AddReactor("update", resource, func(action core.Action) (bool, runtime.Object, error) {
+		updateAction := action.(core.UpdateAction)
+		obj := updateAction.GetObject()
+		go func() {
+			watcher.Modify(obj)
+			objChan <- obj
+		}()
+		return true, obj, nil
+	})
+	return objChan
+}
+
+func GetNamespaceFromChan(c chan runtime.Object) *api_v1.Namespace {
+	select {
+	case obj := <-c:
+		namespace := obj.(*api_v1.Namespace)
+		return namespace
+	case <-time.After(time.Minute):
+		return nil
+	}
+}