@Test(expected = OnrampException.class)
public void internalServerError() throws Exception {

  stubFor(post(urlEqualTo("/onramp/v1/roads/" + TEST_ROAD + "/messages")).willReturn(
      aResponse().withStatus(HttpStatus.SC_INTERNAL_SERVER_ERROR).withBody(INTERNAL_SERVER_ERROR_MESSAGE)));
  SimpleModel messageModel = new SimpleModel();
  messageModel.setId(1L);
  messageModel.setStr("test message");
  underTest.sendMessage(messageModel);
}