Add e2e test for volume subpath mount

test/e2e/dynamic_provisioning_test.go

@@ -334,6 +334,30 @@ var _ = ginkgo.Describe("Dynamic Provisioning", func() {
 		}
 		test.Run(cs, ns)
 	})
+
+	ginkgo.It("should create a pod with volume mount subpath [smb.csi.k8s.io] [Windows]", func() {
+		pods := []testsuites.PodDetails{
+			{
+				Cmd: convertToPowershellCommandIfNecessary("echo 'hello world' > /mnt/test-1/data && grep 'hello world' /mnt/test-1/data"),
+				Volumes: []testsuites.VolumeDetails{
+					{
+						ClaimSize: "10Gi",
+						VolumeMount: testsuites.VolumeMountDetails{
+							NameGenerate:      "test-volume-",
+							MountPathGenerate: "/mnt/test-",
+						},
+					},
+				},
+				IsWindows: isWindowsCluster,
+			},
+		}
+		test := testsuites.DynamicallyProvisionedVolumeSubpathTester{
+			CSIDriver:              testDriver,
+			Pods:                   pods,
+			StorageClassParameters: storageClassCreateSubDir,
+		}
+		test.Run(cs, ns)
+	})
 })
 
 func restClient(group string, version string) (restclientset.Interface, error) {

test/e2e/testsuites/dynamically_provisioned_volume_subpath_tester.go

@@ -0,0 +1,50 @@
+/*
+Copyright 2021 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 testsuites
+
+import (
+	"github.com/kubernetes-csi/csi-driver-smb/test/e2e/driver"
+
+	"github.com/onsi/ginkgo"
+	v1 "k8s.io/api/core/v1"
+	clientset "k8s.io/client-go/kubernetes"
+)
+
+// DynamicallyProvisionedCmdVolumeTest will provision required StorageClass(es), PVC(s) and Pod(s)
+// Waiting for the PV provisioner to create a new PV
+// Testing if the Pod(s) Cmd is run with a 0 exit code
+type DynamicallyProvisionedVolumeSubpathTester struct {
+	CSIDriver              driver.DynamicPVTestDriver
+	Pods                   []PodDetails
+	StorageClassParameters map[string]string
+}
+
+func (t *DynamicallyProvisionedVolumeSubpathTester) Run(client clientset.Interface, namespace *v1.Namespace) {
+	for _, pod := range t.Pods {
+		tpod, cleanup := pod.SetupWithDynamicVolumesWithSubpath(client, namespace, t.CSIDriver, t.StorageClassParameters)
+		// defer must be called here for resources not get removed before using them
+		for i := range cleanup {
+			defer cleanup[i]()
+		}
+
+		ginkgo.By("deploying the pod")
+		tpod.Create()
+		defer tpod.Cleanup()
+		ginkgo.By("checking that the pods command exits with no error")
+		tpod.WaitForSuccess()
+	}
+}

test/e2e/testsuites/specs.go

@@ -155,6 +155,17 @@ func (pod *PodDetails) SetupDeployment(client clientset.Interface, namespace *v1
 	return tDeployment, cleanupFuncs
 }
 
+func (pod *PodDetails) SetupWithDynamicVolumesWithSubpath(client clientset.Interface, namespace *v1.Namespace, csiDriver driver.DynamicPVTestDriver, storageClassParameters map[string]string) (*TestPod, []func()) {
+	tpod := NewTestPod(client, namespace, pod.Cmd, pod.IsWindows)
+	cleanupFuncs := make([]func(), 0)
+	for n, v := range pod.Volumes {
+		tpvc, funcs := v.SetupDynamicPersistentVolumeClaim(client, namespace, csiDriver, storageClassParameters)
+		cleanupFuncs = append(cleanupFuncs, funcs...)
+		tpod.SetupVolumeMountWithSubpath(tpvc.persistentVolumeClaim, fmt.Sprintf("%s%d", v.VolumeMount.NameGenerate, n+1), fmt.Sprintf("%s%d", v.VolumeMount.MountPathGenerate, n+1), "testSubpath", v.VolumeMount.ReadOnly)
+	}
+	return tpod, cleanupFuncs
+}
+
 func (volume *VolumeDetails) SetupDynamicPersistentVolumeClaim(client clientset.Interface, namespace *v1.Namespace, csiDriver driver.DynamicPVTestDriver, storageClassParameters map[string]string) (*TestPersistentVolumeClaim, []func()) {
 	cleanupFuncs := make([]func(), 0)
 	ginkgo.By("setting up the StorageClass")

test/e2e/testsuites/testsuites.go

@@ -598,6 +598,28 @@ func (t *TestPod) Logs() ([]byte, error) {
 	return podLogs(t.client, t.pod.Name, t.namespace.Name)
 }
 
+func (t *TestPod) SetupVolumeMountWithSubpath(pvc *v1.PersistentVolumeClaim, name, mountPath string, subpath string, readOnly bool) {
+	volumeMount := v1.VolumeMount{
+		Name:      name,
+		MountPath: mountPath,
+		SubPath:   subpath,
+		ReadOnly:  readOnly,
+	}
+
+	t.pod.Spec.Containers[0].VolumeMounts = append(t.pod.Spec.Containers[0].VolumeMounts, volumeMount)
+
+	volume := v1.Volume{
+		Name: name,
+		VolumeSource: v1.VolumeSource{
+			PersistentVolumeClaim: &v1.PersistentVolumeClaimVolumeSource{
+				ClaimName: pvc.Name,
+			},
+		},
+	}
+
+	t.pod.Spec.Volumes = append(t.pod.Spec.Volumes, volume)
+}
+
 type TestSecret struct {
 	client    clientset.Interface
 	secret    *v1.Secret