我无法将Mockito单元测试改写为Spock规范

Question

@Service
public class UserDetailsServiceImpl implements UserDetailsService {

    private final UserRepository userRepository;

    @Autowired
    public UserDetailsServiceImpl(UserRepository userRepository) {
        this.userRepository = userRepository;
    }

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        final UserEntity user = userRepository.findByUsername(username);

        if (user == null) {
            throw new UsernameNotFoundException("Cannot find user with username " + username);
        }

        return new User(user);
    }
}

并且我使用JUnit和Mockito为该方法编写了一个单元测试。这些测试正在工作：

@RunWith(SpringRunner.class)
@DirtiesContext
public class UserDetailsServiceTest {

    @Autowired
    private UserDetailsService userDetailsService;

    @Test
    public void shouldFindUser() throws Exception {
        // given
        final UserEntity user = new UserEntity(
                1L,
                "username",
                "[e-mail]",
                "password",
                new ArrayList<>() // list of roles
        );

        when(UserDetailsServiceTestContext.userRepository.findByUsername(user.getUsername()))
                .thenReturn(user);

        // when
        final UserDetails result = userDetailsService.loadUserByUsername(user.getUsername());

        // then
        assertThat(result).isEqualTo(UserFactory.create(user));
        verify(UserDetailsServiceTestContext.userRepository)
                .findByUsername(user.getUsername());
    }

    @Test(expected = UsernameNotFoundException.class)
    public void shouldNotFindUser() throws Exception {
        // given
        when(UserDetailsServiceTestContext.userRepository.findByUsername(anyString()))
                .thenReturn(null);

        // when
        final UserDetails result = userDetailsService.loadUserByUsername(new String());
    }

    @TestConfiguration
    static class UserDetailsServiceTestContext {

        @MockBean
        private static UserRepository userRepository;

        @Bean
        UserDetailsService userDetailsService() {
            return new UserDetailsServiceImpl(userRepository);
        }
    }

}

现在我尝试使用Groovy和Spock框架编写这些测试。我写了如下规范：

def 'should find user'() {
        given:
            def user = new UserEntity(
                1L,
                "username",
                "[e-mail]",
                "password"
                new ArrayList<>() // list of roles
            )

            userRepository.findByUsername(user.username) >> user
            // userRepository.findByUsername(_ as String) >> user // also working

        when:
            def result = userDetailsService.loadUserByUsername(user.username)

        then:
            result == new User(user)
    }

这个测试起作用了。但是，当我想通过在节中添加验证userRepository的调用时:语句1*userRepository.findByUserName(user.userName)或1*userRepository.findByUserName(_as String)我得到一个错误UserDetailsServiceSpec.should find user并返回新用户：36？UserNameNotFound。第36行位于节中，此时:

Answer 1

您需要在一个步骤中完成剪切和验证

then:
1 * userRepository.findByUsername(user.username) >> user

关于细节，这里是我从Spock中预定义的模拟响应中得到的答案：

请参阅文档

setup:
subscriber.receive("message1") >> "ok"

when:
publisher.send("message1")

then:
1 * subscriber.receive("message1")