java - 使用 Mockito NotaMockException 进行 Junit 测试

Question

我在 Mockito junit 测试中遇到问题。我是新手，对问题有点困惑。对此的任何帮助将不胜感激。

这些是我打算写的类(class)

public class B extends QuartzJobBean {

private B b;
        @Override
        protected void executeInternal(JobExecutionContext context) throws JobExecutionException {
                try {
                b.expireContract();
            } catch (BusinessServiceException e) {
                LOGGER.error("BusinessServiceException in B : " +
                    e.getMessage());
                LOGGER.debug("BusinessServiceException in B : ", e);
            } catch (Exception e) {
                LOGGER.error("Exception in B : " +
                    e.getMessage());
                LOGGER.debug("Exception in B : ", e);
            }
        }



public class C {

@Autowired
        private D d;
        public boolean expireTime() throws BusinessServiceException
        {

            try {
                contractBusinessService.expireContract();
                return true;
            } catch (Exception e)
            {
                 e.getMessage();
             return false;
            }
        }

出现以下异常:

*org.mockito.exceptions.misusing.NotAMockException: 
 Argument passed to when() is not a mock!*

这是我的junit测试代码

class BTest(){

  B b;

@Before
        public void setUp() {
         b= Mockito.spy(new B());
         c= PowerMock.createMock(C.class);
         b.setC(c);
        }

     @Test
        public void testExpireContract() {
           Mockito.doNothing().when(c).expireTime();

            try {
            b.executeInternal(j);


            fail("BusinessServiceException should have thrown.");
            } catch (Exception wse) {
                assertEquals("BusinessServiceException should be same.", "BusinessServiceException", wse.getMessage());
            }
            verify(b).expireTime();
            Assert.assertNotNull("value should not be null.", b);

        }

Answer 1

测试使用两个不同的模拟库 问题就在这里c= PowerMock.createMock(C.class);

您尝试使用 c 对象(PowerMock 模拟对象)，就好像它是 Mockito 模拟一样，这就是您收到异常的原因。

// Instead of PowerMock just use Mockito to create a mock
c = Mockito.mock(C.class);

// Then you can pass it to `Mockito.when()` method as an argument
Mockito.doNothing().when(c).expireTime();

实际上，可以use PowerMock along with Mockito ，但需要更多配置。将 PowerMock 与 Mockito 结合使用可提供额外的高级功能，例如模拟静态方法。