@Test
public void testPostComplete() throws Exception {

  String id = "container_01_01";
  ContainerId mockContainerId = mock(ContainerId.class);
  when(mockContainerId.toString()).thenReturn(id);
  Assert.assertNull(cGroupsBlkioResourceHandlerImpl
      .postComplete(mockContainerId));
  verify(mockCGroupsHandler, times(1)).deleteCGroup(
      CGroupsHandler.CGroupController.BLKIO, id);
}