java - mockito.verify() 给出了错误的调用计数

Question

我正在尝试mockito.verify()功能，该方法仅调用一次，但verify显示调用3次。单元测试只有一个测试，以确保该测试不会受到其他影响。Mockito.verify(utilClass, Mockito.times(1)).hello();///但是调用了3次，就是错误

我尝试使用日志，它显示调用是一次。添加了多次有意调用方法 utilClass.hello() ，然后显示正确的调用次数。但是在给定的代码中，调用该方法一次时，显示为调用了 3 次。

要测试的类:

@Component
public class UtilClass {

    private static final Logger logger =  LoggerFactory.getLogger(UtilClass.class);

    public String hello() {
        logger.info("hello method invoked");
        return "Hello World,"+ hi();
    }

    private String hi() {
        logger.info("hi method invoked");
        return "Hi All";
    }
}
@Component
public class ClassWithDependency {

    @Autowired
    private UtilClass utilClass;

    public String welcome() {
        String msg = utilClass.hello();
        return msg;
    }

}

测试用例

@InjectMocks
private ClassWithDependency classWithDependency;

@Mock
private UtilClass utilClass;

@Before
public void init() throws Exception {
        PowerMockito.when(utilClass,"hi").thenReturn("Hi Java");
        PowerMockito.when(utilClass.hello()).thenCallRealMethod();
    }


    @Test
    public void testMock() throws Exception {
        final String msg = classWithDependency.welcome();

        final String msgExpected = "Hello World,Hi Java";
        logger.info("welcome method called:{}",msg);

        PowerMockito.verifyPrivate(utilClass, Mockito.times(1)).invoke("hi");
        Mockito.verify(utilClass, Mockito.times(1)).hello();

        Assert.assertTrue(msg.equals(msgExpected));
    }

我期望mockito.verify成功，但出现错误

org.mockito.exceptions.verification.TooManyActualInvocations: utilClass.hello(); Wanted 1 time: -> at com.sd.demo.powermock.test.injectmock.InjectMockTest.testMock(InjectMockTest.java:54) But was 3 times: -> at com.sd.demo.powermock.injectmock.ClassWithDependency.welcome(ClassWithDependency.java:13) -> at com.sd.demo.powermock.injectmock.ClassWithDependency.welcome(ClassWithDependency.java:13) -> at com.sd.demo.powermock.injectmock.ClassWithDependency.welcome(ClassWithDependency.java:13) at com.sd.demo.powermock.test.injectmock.InjectMockTest.testMock(InjectMockTest.java:54) at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:68) at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:89) .............

Answer 1

最后让测试工作，解决方案是“SPY”。监视util类，这样就不会告诉真正调用哪个方法。我不知道如何注入(inject) spy ，所以使用了 setter..

@InjectMocks 私有(private) ClassWithDependency classWithDependency;

private UtilClass mockUtil;

@Before
public void init() throws Exception {
    UtilClass utilClass = new UtilClass();
    mockUtil = PowerMockito.spy(utilClass);
    classWithDependency.setUtilClass(mockUtil); 
}

@Test
public void testMock() throws Exception {
    PowerMockito.when(mockUtil,"hi").thenReturn("Hi Java"); 
    final String msg = classWithDependency.welcome();
    final String msgExpected = "Hello World,Hi Java";
    logger.info("welcome method called:{}",msg);
    PowerMockito.verifyPrivate(mockUtil, Mockito.times(1)).invoke("hi");
    Mockito.verify(mockUtil, Mockito.times(1)).hello();
    Assert.assertTrue(msg.equals(msgExpected));
}