java - 使用 Mockito 和 Junit 时如何自动连接 spring bean？

Question

我正在尝试设置要在 Junit 中使用的类。

但是，当我尝试执行以下操作时，出现错误。

当前测试类:

public class PersonServiceTest {

    @Autowired
    @InjectMocks
    PersonService personService;

    @Before
    public void setUp() throws Exception
    {
        MockitoAnnotations.initMocks(this);
        assertThat(PersonService, notNullValue());

    }

    //tests

错误:

org.mockito.exceptions.base.MockitoException: 
Cannot instantiate @InjectMocks field named 'personService'
You haven't provided the instance at field declaration so I tried to construct the instance.
However the constructor or the initialization block threw an exception : null

我该如何解决这个问题？

Answer 1

您没有在代码中模拟任何内容。 @InjectMocks 设置一个模拟将被注入(inject)的类。

你的代码应该是这样的

public class PersonServiceTest {

    @InjectMocks
    PersonService personService;

    @Mock
    MockedClass myMock;

    @Before
    public void setUp() throws Exception {
        MockitoAnnotations.initMocks(this);
        Mockito.doReturn("Whatever you want returned").when(myMock).mockMethod;


    }

    @Test()
      public void testPerson() {

         assertThat(personService.method, "what you expect");
      }