java如何使用Mockito模拟Spring ApplicationContext的getBean方法，用TestNG编写单元测试？

Question

我正在为下面的课程编写单元测试

待测类别：

public class RandomManager {
        @Autowired
        private ApplicationContext context;

        @Autowired
        private ClassA objectA;

        public void methodToBeTested() {
            objectA.methodToBeVerified(context.getBean(Random.class,"Yaswanth","Yaswanth"));
        }
    }

以下是测试等级：

public class RandomManagerTest {

    @Mock
    private ClassA objectA;

    @Mock
    private ApplicationContext context;

    @InjectMocks
    private RandomManager randomManager;

    @BeforeTest
    public void before() {
        MockitoAnnotations.initMocks(this);
        doReturn(any(Random.class)).when(context)
            .getBean(any(Class.class), any(), any());
    }

    @Test
    public void methodToBeTestedTest() {
        Random randomObject = new RandomObject("Yaswanth", "Yaswanth");
        randomManager.methodToBeTested();
        verify(objectA).methodToBeVerified(randomObject);
    }
}

当我尝试存根时，上述代码在before方法中失败 应用上下文模拟。我得到以下错误

You cannot use argument matchers outside of verification or stubbing. Examples of correct usage of argument matchers: when(mock.get(anyInt())).thenReturn(null); doThrow(new RuntimeException()).when(mock).someVoidMethod(anyObject()); verify(mock).someMethod(contains("foo"))

This message may appear after an NullPointerException if the last matcher is returning an object like any() but the stubbed method signature expect a primitive argument, in this case, use primitive alternatives. when(mock.get(any())); // bad use, will raise NPE when(mock.get(anyInt())); // correct usage use

Also, this error might show up because you use argument matchers with methods that cannot be mocked. Following methods cannot be stubbed/verified: final/private/equals()/hashCode(). Mocking methods declared on non-public parent classes is not supported.

有谁能帮我理解我在这个世界上做错了什么 以上代码

注意：我使用的是TestNG和Mockito。我可以延长 AbstractTestNGSpringContextTests并使用spring-test.xml，声明我的 beans和autowire应用程序上下文。我觉得这对我来说太过分了 我的用例。我需要模拟applicationContext的getBean方法

Answer 1

这个问题来自doReturn(any(Random.class))，在那里你不允许使用any()。 用一个真实的实例来代替它