add unit test coverage for v1beta1

pkg/validation-webhook/webhook_test.go

@@ -14,22 +14,8 @@ import (
 	"os"
 	"testing"
 	"time"
-
-	v1 "github.com/kubernetes-csi/external-snapshotter/client/v4/apis/volumesnapshot/v1"
-	"k8s.io/apimachinery/pkg/labels"
 )
 
-type fakeSnapshotLister struct {
-}
-
-func (f *fakeSnapshotLister) List(selector labels.Selector) (ret []*v1.VolumeSnapshotClass, err error) {
-	return nil, nil
-}
-
-func (f *fakeSnapshotLister) Get(name string) (*v1.VolumeSnapshotClass, error) {
-	return nil, nil
-}
-
 func TestWebhookCertReload(t *testing.T) {
 	// Initialize test space
 	tmpDir := os.TempDir() + "/webhook-cert-tests"
@@ -46,9 +32,6 @@ func TestWebhookCertReload(t *testing.T) {
 			t.Errorf("unexpected error occurred while deleting certs: %v", err)
 		}
 	}()
-
-	//Create a fake lister
-
 	generateTestCertKeyPair(t, certFile, keyFile)
 
 	// Start test server