Add unit tests for MountVolume() of operation executor

pkg/volume/util/nestedpendingoperations/nestedpendingoperations.go

@@ -154,10 +154,6 @@ func (grm *nestedPendingOperations) IsOperationPending(
 	return false
 }
 
-func (grm *nestedPendingOperations) GetOperations() []operation {
-	return grm.operations
-}
-
 // This is an internal function and caller should acquire and release the lock
 func (grm *nestedPendingOperations) isOperationExists(
 	volumeName v1.UniqueVolumeName,

pkg/volume/util/operationexecutor/operation_executor.go

@@ -469,10 +469,6 @@ func (oe *operationExecutor) VerifyControllerAttachedVolume(
 		volumeToMount.VolumeName, "" /* podName */, verifyControllerAttachedVolumeFunc)
 }
 
-func (oe *operationExecutor) GetNestedPendingOperations() nestedpendingoperations.NestedPendingOperations {
-	return oe.pendingOperations
-}
-
 // TODO: this is a workaround for the unmount device issue caused by gci mounter.
 // In GCI cluster, if gci mounter is used for mounting, the container started by mounter
 // script will cause additional mounts created in the container. Since these mounts are

pkg/volume/util/operationexecutor/operation_executor_test.go

@@ -54,7 +54,8 @@ func TestOperationExecutor_MountVolume_ParallelMountForNonAttachablePlugins(t *t
 	}
 
 	// Assert
-	loop: for {
+loop:
+	for {
 		select {
 		case <-ch:
 			numMountOperationsStarted++
@@ -93,7 +94,8 @@ func TestOperationExecutor_MountVolume_ParallelMountForAttachablePlugins(t *test
 	}
 
 	// Assert
-	loop: for {
+loop:
+	for {
 		select {
 		case <-ch:
 			numMountOperationsStarted++