mirror of https://github.com/k3s-io/k3s
365 lines
11 KiB
Go
365 lines
11 KiB
Go
/*
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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 gce_pd
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import (
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"errors"
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"fmt"
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"testing"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/volume"
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volumetest "k8s.io/kubernetes/pkg/volume/testing"
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"github.com/golang/glog"
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)
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func TestGetDeviceName_Volume(t *testing.T) {
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plugin := newPlugin()
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name := "my-pd-volume"
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spec := createVolSpec(name, false)
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deviceName, err := plugin.GetVolumeName(spec)
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if err != nil {
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t.Errorf("GetDeviceName error: %v", err)
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}
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if deviceName != name {
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t.Errorf("GetDeviceName error: expected %s, got %s", name, deviceName)
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}
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}
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func TestGetDeviceName_PersistentVolume(t *testing.T) {
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plugin := newPlugin()
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name := "my-pd-pv"
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spec := createPVSpec(name, true)
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deviceName, err := plugin.GetVolumeName(spec)
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if err != nil {
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t.Errorf("GetDeviceName error: %v", err)
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}
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if deviceName != name {
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t.Errorf("GetDeviceName error: expected %s, got %s", name, deviceName)
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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 string
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// For fake GCE:
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attach attachCall
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detach detachCall
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diskIsAttached diskIsAttachedCall
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t *testing.T
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// Actual test to run
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test func(test *testcase) error
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// Expected return of the test
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expectedReturn error
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}
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func TestAttachDetach(t *testing.T) {
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diskName := "disk"
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instanceID := "instance"
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readOnly := false
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spec := createVolSpec(diskName, readOnly)
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attachError := errors.New("Fake attach error")
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detachError := errors.New("Fake detach error")
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diskCheckError := errors.New("Fake DiskIsAttached 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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diskIsAttached: diskIsAttachedCall{diskName, instanceID, false, nil},
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attach: attachCall{diskName, instanceID, readOnly, nil},
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test: func(testcase *testcase) error {
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attacher := newAttacher(testcase)
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devicePath, err := attacher.Attach(spec, instanceID)
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if devicePath != "/dev/disk/by-id/google-disk" {
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return fmt.Errorf("devicePath incorrect. Expected<\"/dev/disk/by-id/google-disk\"> Actual: <%q>", devicePath)
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}
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return err
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},
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},
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// Disk is already attached
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{
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name: "Attach_Positive_AlreadyAttached",
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diskIsAttached: diskIsAttachedCall{diskName, instanceID, true, nil},
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test: func(testcase *testcase) error {
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attacher := newAttacher(testcase)
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devicePath, err := attacher.Attach(spec, instanceID)
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if devicePath != "/dev/disk/by-id/google-disk" {
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return fmt.Errorf("devicePath incorrect. Expected<\"/dev/disk/by-id/google-disk\"> Actual: <%q>", devicePath)
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}
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return err
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},
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},
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// DiskIsAttached fails and Attach succeeds
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{
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name: "Attach_Positive_CheckFails",
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diskIsAttached: diskIsAttachedCall{diskName, instanceID, false, diskCheckError},
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attach: attachCall{diskName, instanceID, readOnly, nil},
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test: func(testcase *testcase) error {
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attacher := newAttacher(testcase)
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devicePath, err := attacher.Attach(spec, instanceID)
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if devicePath != "/dev/disk/by-id/google-disk" {
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return fmt.Errorf("devicePath incorrect. Expected<\"/dev/disk/by-id/google-disk\"> Actual: <%q>", devicePath)
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}
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return err
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},
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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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diskIsAttached: diskIsAttachedCall{diskName, instanceID, false, diskCheckError},
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attach: attachCall{diskName, instanceID, readOnly, attachError},
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test: func(testcase *testcase) error {
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attacher := newAttacher(testcase)
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devicePath, err := attacher.Attach(spec, instanceID)
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if devicePath != "" {
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return fmt.Errorf("devicePath incorrect. Expected<\"\"> Actual: <%q>", devicePath)
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}
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return err
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},
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expectedReturn: 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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diskIsAttached: diskIsAttachedCall{diskName, instanceID, true, nil},
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detach: detachCall{diskName, instanceID, nil},
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test: func(testcase *testcase) error {
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detacher := newDetacher(testcase)
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return detacher.Detach(diskName, instanceID)
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},
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},
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// Disk is already detached
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{
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name: "Detach_Positive_AlreadyDetached",
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diskIsAttached: diskIsAttachedCall{diskName, instanceID, false, nil},
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test: func(testcase *testcase) error {
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detacher := newDetacher(testcase)
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return detacher.Detach(diskName, instanceID)
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},
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},
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// Detach succeeds when DiskIsAttached fails
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{
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name: "Detach_Positive_CheckFails",
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diskIsAttached: diskIsAttachedCall{diskName, instanceID, false, diskCheckError},
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detach: detachCall{diskName, instanceID, nil},
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test: func(testcase *testcase) error {
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detacher := newDetacher(testcase)
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return detacher.Detach(diskName, instanceID)
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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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diskIsAttached: diskIsAttachedCall{diskName, instanceID, false, diskCheckError},
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detach: detachCall{diskName, instanceID, detachError},
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test: func(testcase *testcase) error {
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detacher := newDetacher(testcase)
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return detacher.Detach(diskName, instanceID)
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},
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expectedReturn: 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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err := testcase.test(&testcase)
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if err != testcase.expectedReturn {
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t.Errorf("%s failed: expected err=%q, got %q", testcase.name, testcase.expectedReturn.Error(), err.Error())
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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() *gcePersistentDiskPlugin {
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host := volumetest.NewFakeVolumeHost(
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"/tmp", /* rootDir */
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nil, /* kubeClient */
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nil, /* plugins */
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"" /* rootContext */)
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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.(*gcePersistentDiskPlugin)
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}
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func newAttacher(testcase *testcase) *gcePersistentDiskAttacher {
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return &gcePersistentDiskAttacher{
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host: nil,
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gceDisks: testcase,
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}
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}
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func newDetacher(testcase *testcase) *gcePersistentDiskDetacher {
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return &gcePersistentDiskDetacher{
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gceDisks: testcase,
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}
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}
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func createVolSpec(name string, readOnly bool) *volume.Spec {
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return &volume.Spec{
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Volume: &api.Volume{
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VolumeSource: api.VolumeSource{
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GCEPersistentDisk: &api.GCEPersistentDiskVolumeSource{
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PDName: 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 string, readOnly bool) *volume.Spec {
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return &volume.Spec{
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PersistentVolume: &api.PersistentVolume{
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Spec: api.PersistentVolumeSpec{
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PersistentVolumeSource: api.PersistentVolumeSource{
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GCEPersistentDisk: &api.GCEPersistentDiskVolumeSource{
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PDName: 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 GCE implementation
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type attachCall struct {
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diskName string
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instanceID string
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readOnly bool
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ret error
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}
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type detachCall struct {
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devicePath string
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instanceID string
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ret error
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}
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type diskIsAttachedCall struct {
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diskName, instanceID string
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isAttached bool
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ret error
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}
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func (testcase *testcase) AttachDisk(diskName, instanceID string, readOnly bool) error {
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expected := &testcase.attach
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if expected.diskName == "" && expected.instanceID == "" {
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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.instanceID != instanceID {
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testcase.t.Errorf("Unexpected AttachDisk call: expected instanceID %s, got %s", expected.instanceID, instanceID)
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return errors.New("Unexpected AttachDisk call: wrong instanceID")
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}
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if expected.readOnly != readOnly {
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testcase.t.Errorf("Unexpected AttachDisk call: expected readOnly %v, got %v", expected.readOnly, readOnly)
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return errors.New("Unexpected AttachDisk call: wrong readOnly")
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}
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glog.V(4).Infof("AttachDisk call: %s, %s, %v, returning %v", diskName, instanceID, readOnly, expected.ret)
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return expected.ret
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}
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func (testcase *testcase) DetachDisk(devicePath, instanceID string) error {
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expected := &testcase.detach
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if expected.devicePath == "" && expected.instanceID == "" {
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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.devicePath != devicePath {
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testcase.t.Errorf("Unexpected DetachDisk call: expected devicePath %s, got %s", expected.devicePath, devicePath)
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return errors.New("Unexpected DetachDisk call: wrong diskName")
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}
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if expected.instanceID != instanceID {
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testcase.t.Errorf("Unexpected DetachDisk call: expected instanceID %s, got %s", expected.instanceID, instanceID)
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return errors.New("Unexpected DetachDisk call: wrong instanceID")
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}
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glog.V(4).Infof("DetachDisk call: %s, %s, returning %v", devicePath, instanceID, expected.ret)
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return expected.ret
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}
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func (testcase *testcase) DiskIsAttached(diskName, instanceID string) (bool, error) {
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expected := &testcase.diskIsAttached
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if expected.diskName == "" && expected.instanceID == "" {
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// testcase.diskIsAttached looks uninitialized, test did not expect to
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// call DiskIsAttached
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testcase.t.Errorf("Unexpected DiskIsAttached call!")
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return false, errors.New("Unexpected DiskIsAttached call!")
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}
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if expected.diskName != diskName {
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testcase.t.Errorf("Unexpected DiskIsAttached call: expected diskName %s, got %s", expected.diskName, diskName)
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return false, errors.New("Unexpected DiskIsAttached call: wrong diskName")
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}
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if expected.instanceID != instanceID {
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testcase.t.Errorf("Unexpected DiskIsAttached call: expected instanceID %s, got %s", expected.instanceID, instanceID)
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return false, errors.New("Unexpected DiskIsAttached call: wrong instanceID")
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}
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glog.V(4).Infof("DiskIsAttached call: %s, %s, returning %v, %v", diskName, instanceID, expected.isAttached, expected.ret)
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return expected.isAttached, expected.ret
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}
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func (testcase *testcase) CreateDisk(name string, zone string, sizeGb int64, tags map[string]string) error {
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return errors.New("Not implemented")
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}
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func (testcase *testcase) DeleteDisk(diskToDelete string) error {
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return errors.New("Not implemented")
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}
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func (testcase *testcase) GetAutoLabelsForPD(name string, zone string) (map[string]string, error) {
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return map[string]string{}, errors.New("Not implemented")
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}
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