我正在使用 springMVC,我想测试我的服务,但是我的 @Mock 存储库不工作,所以我永远不会得到我的用户,因为我的存储库是空的,我该如何解决这个问题?我在注释中做错了什么吗?
存储库接口(interface):
package br.com.api.model.data;
import br.com.api.model.resources.User;
import java.util.List;
public interface UserDao {
User findByLoginAndPassword(String login, String password);
List<User> listAll();
}
存储库实现:
package br.com.api.model.repository;
import br.com.api.model.data.UserDao;
import br.com.api.model.resources.User;
import org.springframework.stereotype.Repository;
import java.util.ArrayList;
import java.util.List;
@Repository
public class UserRepository implements UserDao {
public User findByLoginAndPassword(String login, String password) {
System.out.println("lets find:");
User userMatch = new User();
List<User> users = usersMockup();
for (User user : users) {
if(user.getLogin().equals(login)
&& user.getPassword().equals(password)){
userMatch = user;
}
}
return userMatch;
}
public List<User> listAll() {
List<User> users = usersMockup();
return users;
}
private List<User> usersMockup(){
List<User> users = new ArrayList<User>();
User first = new User();
first.setLogin("first");
first.setPassword("teste");
User scnd = new User();
scnd.setLogin("second");
scnd.setPassword("teste");
users.add(first);
users.add(scnd);
return users;
}
}
这是我的服务:
package br.com.api.model.services;
import br.com.api.model.data.UserDao;
import br.com.api.model.resources.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class UserService {
@Autowired
private UserDao userRepository;
public User findUser(String login, String password) {
User userMatch;
userMatch = userRepository.findByLoginAndPassword(login, password);
return userMatch;
}
}
这是我的测试:
package br.com.api.model.services;
import br.com.api.model.repository.UserRepository;
import br.com.api.model.resources.User;
import org.junit.runner.RunWith;
import org.mockito.MockitoAnnotations;
import org.mockito.Mock;
import org.junit.Before;
import org.junit.Test;
import org.mockito.InjectMocks;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import static org.mockito.Mockito.when;
@RunWith(SpringJUnit4ClassRunner.class)
public class UserServiceTest {
@Mock
UserDao userRepository;
@InjectMocks
UserService userService;
@Before
public void setUp(){
MockitoAnnotations.initMocks(this);
}
@Test
public void findUser(){
User user;
user = userService.findUser("first", "teste");
assertNotNull(user.getLogin());
}
}
最佳答案
我相信您错过了单元测试和模拟的整个概念。
- 当您对
UserService
进行单元测试时,您不想使用真正的UserRepository
实现。 - 您模拟了一个
UserRepository
,您不希望模拟对象立即表现得像真实对象一样。您需要弥补它的行为(又名 stub )。 - 您应该很少需要在单元测试中使用 Spring Runner。
为了决定模拟对象的行为,您必须知道被测系统(SUT,在您的情况下是 UserService
)及其依赖项(UserRepository
)
在你的情况下,测试应该看起来像(还没有编译,只是告诉你这个想法)
public class UserServiceTest {
@InjectMocks
UserService userService;
@Mock
UserDao mockUserRepository;
@Before
public void setUp(){
MockitoAnnotations.initMocks(this);
}
@Test
public void testFindUser(){
// Given
User dummyUser = new User();
when(mockUserRepository.findByLoginAndPassword(anyString(), anyString()).thenReturn(dummyUser);
// When
User result = userService.findUser("first", "teste");
// Then
// you are expecting service to return whatever returned by repo
assertThat("result", result, is(sameInstance(dummUser)));
// you are expecting repo to be called once with correct param
verify(mockUserRepository).findByLoginAndPassword("first", "teste");
}
}
关于java - 模拟存储库返回 null,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/36001201/