test2.java

@Test
public void 골뱅이_있지만_유효하지않는_format_400() throws Exception {
  UserSaveDto userSaveDto = new UserSaveDto();
  userSaveDto.setUsername("hjh");
  userSaveDto.setAddress("seoul");
  userSaveDto.setPassword("123456");
  userSaveDto.setEmail("hjh544@g");
  userSaveDto.setProvider(Provider.create("test"));

  this.mockMvc.perform(
      post("/user/signup")
          .contentType(MediaType.APPLICATION_JSON_UTF8)
          .content(objectMapper.writeValueAsString(userSaveDto)))
      .andExpect(status().isBadRequest());
}