Refactor flocker volume plugin

* Support provisioning
* Support deletion
* Use bind mounts instead of /flocker in containers
* support ownership management or SELinux relabeling.

pkg/volume/flocker/flocker_util_test.go

@@ -0,0 +1,57 @@
+/*
+Copyright 2015 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 flocker
+
+import (
+	"fmt"
+	"testing"
+
+	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/api/resource"
+	"k8s.io/kubernetes/pkg/volume"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestFlockerUtil_CreateVolume(t *testing.T) {
+	assert := assert.New(t)
+
+	// test CreateVolume happy path
+	options := volume.VolumeOptions{
+		Capacity: resource.MustParse("3Gi"),
+		AccessModes: []api.PersistentVolumeAccessMode{
+			api.ReadWriteOnce,
+		},
+		PersistentVolumeReclaimPolicy: api.PersistentVolumeReclaimDelete,
+	}
+
+	fakeFlockerClient := newFakeFlockerClient()
+	provisioner := newTestableProvisioner(assert, options).(*flockerVolumeProvisioner)
+	provisioner.flockerClient = fakeFlockerClient
+
+	flockerUtil := &FlockerUtil{}
+
+	datasetID, size, _, err := flockerUtil.CreateVolume(provisioner)
+	assert.NoError(err)
+	assert.Equal(datasetOneID, datasetID)
+	assert.Equal(3, size)
+
+	// test error during CreateVolume
+	fakeFlockerClient.Error = fmt.Errorf("Do not feel like provisioning")
+	_, _, _, err = flockerUtil.CreateVolume(provisioner)
+	assert.Equal(fakeFlockerClient.Error.Error(), err.Error())
+}