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291 lines
8.6 KiB
Go
291 lines
8.6 KiB
Go
// +build !providerless
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/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package awsebs
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import (
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"errors"
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"testing"
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"k8s.io/klog"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/resource"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/kubernetes/pkg/volume"
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volumetest "k8s.io/kubernetes/pkg/volume/testing"
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"k8s.io/legacy-cloud-providers/aws"
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)
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func TestGetVolumeName_Volume(t *testing.T) {
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plugin := newPlugin(t)
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name := aws.KubernetesVolumeID("my-aws-volume")
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spec := createVolSpec(name, false)
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volumeName, err := plugin.GetVolumeName(spec)
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if err != nil {
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t.Errorf("GetVolumeName error: %v", err)
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}
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if volumeName != string(name) {
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t.Errorf("GetVolumeName error: expected %s, got %s", name, volumeName)
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}
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}
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func TestGetVolumeName_PersistentVolume(t *testing.T) {
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plugin := newPlugin(t)
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name := aws.KubernetesVolumeID("my-aws-pv")
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spec := createPVSpec(name, true)
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volumeName, err := plugin.GetVolumeName(spec)
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if err != nil {
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t.Errorf("GetVolumeName error: %v", err)
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}
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if volumeName != string(name) {
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t.Errorf("GetVolumeName error: expected %s, got %s", name, volumeName)
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}
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}
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// One testcase for TestAttachDetach table test below
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type testcase struct {
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name aws.KubernetesVolumeID
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// For fake AWS:
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attach attachCall
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detach detachCall
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t *testing.T
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// Actual test to run
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test func(test *testcase) (string, error)
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// Expected return of the test
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expectedDevice string
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expectedError error
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}
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func TestAttachDetach(t *testing.T) {
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diskName := aws.KubernetesVolumeID("disk")
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nodeName := types.NodeName("instance")
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spec := createVolSpec(diskName, false)
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attachError := errors.New("Fake attach error")
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detachError := errors.New("Fake detach error")
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tests := []testcase{
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// Successful Attach call
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{
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name: "Attach_Positive",
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attach: attachCall{diskName, nodeName, "/dev/sda", nil},
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test: func(testcase *testcase) (string, error) {
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attacher := newAttacher(testcase)
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return attacher.Attach(spec, nodeName)
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},
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expectedDevice: "/dev/sda",
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},
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// Attach call fails
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{
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name: "Attach_Negative",
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attach: attachCall{diskName, nodeName, "", attachError},
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test: func(testcase *testcase) (string, error) {
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attacher := newAttacher(testcase)
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return attacher.Attach(spec, nodeName)
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},
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expectedError: attachError,
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},
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// Detach succeeds
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{
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name: "Detach_Positive",
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detach: detachCall{diskName, nodeName, "/dev/sda", nil},
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test: func(testcase *testcase) (string, error) {
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detacher := newDetacher(testcase)
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mountPath := "/mnt/" + string(diskName)
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return "", detacher.Detach(mountPath, nodeName)
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},
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},
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// Detach fails
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{
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name: "Detach_Negative",
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detach: detachCall{diskName, nodeName, "", detachError},
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test: func(testcase *testcase) (string, error) {
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detacher := newDetacher(testcase)
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mountPath := "/mnt/" + string(diskName)
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return "", detacher.Detach(mountPath, nodeName)
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},
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expectedError: detachError,
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},
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}
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for _, testcase := range tests {
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testcase.t = t
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device, err := testcase.test(&testcase)
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if err != testcase.expectedError {
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t.Errorf("%s failed: expected err=%q, got %q", testcase.name, testcase.expectedError.Error(), err.Error())
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}
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if device != testcase.expectedDevice {
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t.Errorf("%s failed: expected device=%q, got %q", testcase.name, testcase.expectedDevice, device)
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}
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t.Logf("Test %q succeeded", testcase.name)
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}
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}
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// newPlugin creates a new gcePersistentDiskPlugin with fake cloud, NewAttacher
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// and NewDetacher won't work.
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func newPlugin(t *testing.T) *awsElasticBlockStorePlugin {
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host := volumetest.NewFakeVolumeHost(t, "/tmp", nil, nil)
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plugins := ProbeVolumePlugins()
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plugin := plugins[0]
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plugin.Init(host)
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return plugin.(*awsElasticBlockStorePlugin)
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}
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func newAttacher(testcase *testcase) *awsElasticBlockStoreAttacher {
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return &awsElasticBlockStoreAttacher{
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host: nil,
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awsVolumes: testcase,
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}
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}
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func newDetacher(testcase *testcase) *awsElasticBlockStoreDetacher {
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return &awsElasticBlockStoreDetacher{
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awsVolumes: testcase,
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}
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}
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func createVolSpec(name aws.KubernetesVolumeID, readOnly bool) *volume.Spec {
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return &volume.Spec{
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Volume: &v1.Volume{
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VolumeSource: v1.VolumeSource{
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AWSElasticBlockStore: &v1.AWSElasticBlockStoreVolumeSource{
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VolumeID: string(name),
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ReadOnly: readOnly,
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},
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},
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},
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}
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}
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func createPVSpec(name aws.KubernetesVolumeID, readOnly bool) *volume.Spec {
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return &volume.Spec{
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PersistentVolume: &v1.PersistentVolume{
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Spec: v1.PersistentVolumeSpec{
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PersistentVolumeSource: v1.PersistentVolumeSource{
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AWSElasticBlockStore: &v1.AWSElasticBlockStoreVolumeSource{
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VolumeID: string(name),
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ReadOnly: readOnly,
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},
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},
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},
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},
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}
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}
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// Fake AWS implementation
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type attachCall struct {
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diskName aws.KubernetesVolumeID
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nodeName types.NodeName
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retDeviceName string
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ret error
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}
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type detachCall struct {
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diskName aws.KubernetesVolumeID
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nodeName types.NodeName
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retDeviceName string
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ret error
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}
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func (testcase *testcase) AttachDisk(diskName aws.KubernetesVolumeID, nodeName types.NodeName) (string, error) {
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expected := &testcase.attach
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if expected.diskName == "" && expected.nodeName == "" {
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// testcase.attach looks uninitialized, test did not expect to call
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// AttachDisk
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testcase.t.Errorf("Unexpected AttachDisk call!")
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return "", errors.New("unexpected AttachDisk call")
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}
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if expected.diskName != diskName {
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testcase.t.Errorf("Unexpected AttachDisk call: expected diskName %s, got %s", expected.diskName, diskName)
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return "", errors.New("Unexpected AttachDisk call: wrong diskName")
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}
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if expected.nodeName != nodeName {
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testcase.t.Errorf("Unexpected AttachDisk call: expected nodeName %s, got %s", expected.nodeName, nodeName)
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return "", errors.New("Unexpected AttachDisk call: wrong nodeName")
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}
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klog.V(4).Infof("AttachDisk call: %s, %s, returning %q, %v", diskName, nodeName, expected.retDeviceName, expected.ret)
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return expected.retDeviceName, expected.ret
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}
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func (testcase *testcase) DetachDisk(diskName aws.KubernetesVolumeID, nodeName types.NodeName) (string, error) {
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expected := &testcase.detach
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if expected.diskName == "" && expected.nodeName == "" {
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// testcase.detach looks uninitialized, test did not expect to call
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// DetachDisk
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testcase.t.Errorf("Unexpected DetachDisk call!")
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return "", errors.New("unexpected DetachDisk call")
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}
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if expected.diskName != diskName {
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testcase.t.Errorf("Unexpected DetachDisk call: expected diskName %s, got %s", expected.diskName, diskName)
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return "", errors.New("Unexpected DetachDisk call: wrong diskName")
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}
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if expected.nodeName != nodeName {
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testcase.t.Errorf("Unexpected DetachDisk call: expected nodeName %s, got %s", expected.nodeName, nodeName)
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return "", errors.New("Unexpected DetachDisk call: wrong nodeName")
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}
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klog.V(4).Infof("DetachDisk call: %s, %s, returning %q, %v", diskName, nodeName, expected.retDeviceName, expected.ret)
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return expected.retDeviceName, expected.ret
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}
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func (testcase *testcase) DiskIsAttached(diskName aws.KubernetesVolumeID, nodeName types.NodeName) (bool, error) {
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// DetachDisk no longer relies on DiskIsAttached api call
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return false, nil
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}
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func (testcase *testcase) DisksAreAttached(nodeDisks map[types.NodeName][]aws.KubernetesVolumeID) (map[types.NodeName]map[aws.KubernetesVolumeID]bool, error) {
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return nil, errors.New("Not implemented")
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}
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func (testcase *testcase) CreateDisk(volumeOptions *aws.VolumeOptions) (volumeName aws.KubernetesVolumeID, err error) {
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return "", errors.New("Not implemented")
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}
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func (testcase *testcase) DeleteDisk(volumeName aws.KubernetesVolumeID) (bool, error) {
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return false, errors.New("Not implemented")
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}
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func (testcase *testcase) GetVolumeLabels(volumeName aws.KubernetesVolumeID) (map[string]string, error) {
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return map[string]string{}, errors.New("Not implemented")
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}
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func (testcase *testcase) GetDiskPath(volumeName aws.KubernetesVolumeID) (string, error) {
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return "", errors.New("Not implemented")
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}
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func (testcase *testcase) ResizeDisk(
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volumeName aws.KubernetesVolumeID,
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oldSize resource.Quantity,
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newSize resource.Quantity) (resource.Quantity, error) {
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return oldSize, errors.New("Not implemented")
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}
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