java - 如何使用 JUnit Mockito 验证检查方法是否未被调用

Question

我正在为一个类编写 JUnit 测试。我正在尝试测试是否从未调用过特定方法。

public class CountryProcess extends AbstractCountryProcess {

    private static final Logger log = LoggerFactory.getLogger(CountryProcessor.class);
    private static final Long MAX_FILE = 20l;

    @Override
    protected boolean processCountry(Region region, City city) {
        Long maxFile = region.getRequiredLongValue(SIZE);

        if (maxFile < MAX_FILE) {
            cntDao.addCountryLandMark(city);
        }
        else {
            log.warn("File size was big");
        }

        return true;
}

测试类是:

public class CountryProcessTest {

    @Rule
    public final JUnitRuleMockery context = new JUnitRuleMockery();
    private final CntDao cntDao = context.mock(CntDao.class);

    @Before
    public void setup() {
        Injector injector = Guice.createInjector(new AbstractModule() {
            @Override
            protected void configure() {
                bind(cntDao.class).toInstance(cntDao);
            }
        });
    }

    @Test
    public void shouldIgnoreIfFileSizeBiggerThanPermitted() {
        //some code to make it trigger ELSE statement above...
        verify(cntDao, never()).addCountryLandMark(anyString());
    }
}

但这会返回以下错误:

org.mockito.exceptions.misusing.NotAMockException:

Argument passed to verify() is of type $Proxy4 and is not a mock!

Make sure you place the parenthesis correctly!

See the examples of correct verifications:

verify(mock).someMethod();

verify(mock, times(10)).someMethod();

verify(mock, atLeastOnce()).someMethod();

知道如何在当前情况下解决这个问题。请使用当前代码给出一个示例，以便我得到更好的想法？

Answer 1

您正在混合两个模拟框架:

• jMock - JUnitRuleMockery
• Mockito - 验证方法

显然，它们彼此不兼容。您的验证调用看起来没问题，我相信一旦收到使用 Mockito 创建的模拟(使用 Mockito.mock(CntDao.class))，它就会立即工作

作为never的替代方案，您可以使用Mockito.verifyNoMoreInteractions或Mockito.verifyZeroInteractions，但它们不太具体。