Add code to handle in-tree to CSI migration for resizing

pkg/controller/volume/expand/expand_controller_test.go

@@ -0,0 +1,47 @@
+/*
+Copyright 2019 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 expand
+
+import (
+	"testing"
+
+	"k8s.io/client-go/informers"
+	"k8s.io/kubernetes/pkg/controller"
+	controllervolumetesting "k8s.io/kubernetes/pkg/controller/volume/attachdetach/testing"
+)
+
+func TestSyncHandler(t *testing.T) {
+	fakeKubeClient := controllervolumetesting.CreateTestClient()
+	informerFactory := informers.NewSharedInformerFactory(fakeKubeClient, controller.NoResyncPeriodFunc())
+	pvcInformer := informerFactory.Core().V1().PersistentVolumeClaims()
+	pvInformer := informerFactory.Core().V1().PersistentVolumes()
+	storageClassInformer := informerFactory.Storage().V1().StorageClasses()
+
+	expc, err := NewExpandController(fakeKubeClient, pvcInformer, pvInformer, storageClassInformer, nil, nil)
+	if err != nil {
+		t.Fatalf("error creating expand controller : %v", err)
+	}
+
+	var expController *expandController
+	expController, _ = expc.(*expandController)
+
+	err = expController.syncHandler("default/foo")
+	if err != nil {
+		t.Fatalf("error running sync handler : %v", err)
+	}
+
+}