kubernetes/pkg/volume/csi/csi_util_test.go
Hemant Kumar 8d1e2e0faa Do not return err if CSIdriver is not found
while checking for selinux support
2022-09-16 15:53:03 -04:00

206 lines
5.5 KiB
Go

/*
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 csi
import (
"bytes"
"encoding/json"
"flag"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"testing"
"time"
api "k8s.io/api/core/v1"
storagev1 "k8s.io/api/storage/v1"
"k8s.io/apimachinery/pkg/api/resource"
meta "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/klog/v2"
"k8s.io/kubernetes/pkg/volume"
)
// TestMain starting point for all tests.
// Surfaces klog flags by default to enable
// go test -v ./ --args <klog flags>
func TestMain(m *testing.M) {
klog.InitFlags(flag.CommandLine)
os.Exit(m.Run())
}
func makeTestPVWithMountOptions(name string, sizeGig int, driverName, volID string, mountOptions []string) *api.PersistentVolume {
pv := makeTestPV(name, sizeGig, driverName, volID)
pv.Spec.MountOptions = mountOptions
return pv
}
func makeTestPV(name string, sizeGig int, driverName, volID string) *api.PersistentVolume {
return &api.PersistentVolume{
ObjectMeta: meta.ObjectMeta{
Name: name,
},
Spec: api.PersistentVolumeSpec{
AccessModes: []api.PersistentVolumeAccessMode{api.ReadWriteOnce},
Capacity: api.ResourceList{
api.ResourceName(api.ResourceStorage): resource.MustParse(
fmt.Sprintf("%dGi", sizeGig),
),
},
PersistentVolumeSource: api.PersistentVolumeSource{
CSI: &api.CSIPersistentVolumeSource{
Driver: driverName,
VolumeHandle: volID,
ReadOnly: false,
},
},
},
}
}
func makeTestVol(name string, driverName string) *api.Volume {
ro := false
return &api.Volume{
Name: name,
VolumeSource: api.VolumeSource{
CSI: &api.CSIVolumeSource{
Driver: driverName,
ReadOnly: &ro,
},
},
}
}
func getTestCSIDriver(name string, podInfoMount *bool, attachable *bool, volumeLifecycleModes []storagev1.VolumeLifecycleMode) *storagev1.CSIDriver {
defaultFSGroupPolicy := storagev1.ReadWriteOnceWithFSTypeFSGroupPolicy
seLinuxMountSupport := true
noSElinuxMountSupport := false
driver := &storagev1.CSIDriver{
ObjectMeta: meta.ObjectMeta{
Name: name,
},
Spec: storagev1.CSIDriverSpec{
PodInfoOnMount: podInfoMount,
AttachRequired: attachable,
VolumeLifecycleModes: volumeLifecycleModes,
FSGroupPolicy: &defaultFSGroupPolicy,
},
}
switch driver.Name {
case "supports_selinux":
driver.Spec.SELinuxMount = &seLinuxMountSupport
case "no_selinux":
driver.Spec.SELinuxMount = &noSElinuxMountSupport
}
return driver
}
func TestSaveVolumeData(t *testing.T) {
plug, tmpDir := newTestPlugin(t, nil)
defer os.RemoveAll(tmpDir)
testCases := []struct {
name string
data map[string]string
shouldFail bool
}{
{name: "test with data ok", data: map[string]string{"key0": "val0", "_key1": "val1", "key2": "val2"}},
{name: "test with data ok 2 ", data: map[string]string{"_key0_": "val0", "&key1": "val1", "key2": "val2"}},
}
for i, tc := range testCases {
t.Logf("test case: %s", tc.name)
specVolID := fmt.Sprintf("spec-volid-%d", i)
targetPath := getTargetPath(testPodUID, specVolID, plug.host)
mountDir := filepath.Join(targetPath, "mount")
if err := os.MkdirAll(mountDir, 0755); err != nil && !os.IsNotExist(err) {
t.Errorf("failed to create dir [%s]: %v", mountDir, err)
}
err := saveVolumeData(targetPath, volDataFileName, tc.data)
if !tc.shouldFail && err != nil {
t.Errorf("unexpected failure: %v", err)
}
// did file get created
dataDir := getTargetPath(testPodUID, specVolID, plug.host)
file := filepath.Join(dataDir, volDataFileName)
if _, err := os.Stat(file); err != nil {
t.Errorf("failed to create data dir: %v", err)
}
// validate content
data, err := ioutil.ReadFile(file)
if !tc.shouldFail && err != nil {
t.Errorf("failed to read data file: %v", err)
}
jsonData := new(bytes.Buffer)
if err := json.NewEncoder(jsonData).Encode(tc.data); err != nil {
t.Errorf("failed to encode json: %v", err)
}
if string(data) != jsonData.String() {
t.Errorf("expecting encoded data %v, got %v", string(data), jsonData)
}
}
}
func TestCreateCSIOperationContext(t *testing.T) {
testCases := []struct {
name string
spec *volume.Spec
migrated string
}{
{
name: "test volume spec nil",
spec: nil,
migrated: "false",
},
{
name: "test volume normal spec with migrated true",
spec: &volume.Spec{
Migrated: true,
},
migrated: "true",
},
{
name: "test volume normal spec with migrated false",
spec: &volume.Spec{
Migrated: false,
},
migrated: "false",
},
}
for _, tc := range testCases {
t.Logf("test case: %s", tc.name)
timeout := time.Minute
ctx, _ := createCSIOperationContext(tc.spec, timeout)
additionalInfoVal := ctx.Value(additionalInfoKey)
if additionalInfoVal == nil {
t.Error("Could not load additional info from context")
}
additionalInfoV, ok := additionalInfoVal.(additionalInfo)
if !ok {
t.Errorf("Additional info type assertion fail, additionalInfo object: %v", additionalInfoVal)
}
migrated := additionalInfoV.Migrated
if migrated != tc.migrated {
t.Errorf("Expect migrated value: %v, got: %v", tc.migrated, migrated)
}
}
}