@Test
  public void testDoExecute() throws Exception {
    // test execution

    command.doExecute();

    verify(commandExecutor)
        .executeAsync(any(String.class), any(RequestBuilder.class), isA(CommandCallback.class));
  }
 @Before
 public void setUp() throws Exception {
   command = new ExecAsyncCommand(commandExecutor);
   command.hostId = HOST_ID;
   command.command = COMMAND;
 }