@Test
public void deleteRichMenuTest() throws Exception {

    whenCall(retrofitMock.deleteRichMenu(any()),
             null);
    // Do
    final BotApiResponse botApiResponse = target.deleteRichMenu("ID").get();
    // Verify
    verify(retrofitMock, only()).deleteRichMenu("ID");
    assertThat(botApiResponse).isEqualTo(BOT_API_SUCCESS_RESPONSE);
}