@Test
public void createRichMenuTest() throws Exception {

    final RichMenu richMenuReference = RichMenu.builder().build();
    whenCall(retrofitMock.createRichMenu(any()), RICH_MENU_ID_RESPONSE);
    // Do
    final RichMenuIdResponse richMenuIdResponse = target.createRichMenu(richMenuReference).get();
    // Verify
    verify(retrofitMock, only()).createRichMenu(richMenuReference);
    assertThat(richMenuIdResponse).isEqualTo(RICH_MENU_ID_RESPONSE);
}