@Test
public void uploadRichMenuImageTest() throws Exception {

    whenCall(retrofitMock.uploadRichMenuImage(any(), any()),
             null);
    // Do
    final BotApiResponse botApiResponse =
            target.setRichMenuImage("ID", "image/jpeg", ZERO_BYTES).get();
    // Verify
    verify(retrofitMock, only())
            .uploadRichMenuImage(eq("ID"), any());
    assertThat(botApiResponse).isEqualTo(BOT_API_SUCCESS_RESPONSE);
}