java - 如何纠正 junit 给出预期的断言错误 :1 and actual:0?

Question

我有一个像这样的 junit 方法:

    public void testMyStuff() {
        IMockBuilder<BackingBean> builder = createMockBuilder(BackingBean.class);
        builder.addMockedMethod("getMyFacesContextSessionMap");
        BackingBean bean = builder.createMock();
        MyVO MyVO = new MyVO();
        List<MyVO> MyVOList = new ArrayList<MyVO>();
        HttpServletRequest req = createMock(HttpServletRequest.class);
        bean.setHttpServletRequest(req);
        MyVOList.add(buildMyVO());
        expect(bean.getMyFacesContextSessionMap()).andReturn(
                new HashMap<String, Object>());
        expect(ac.getBean("MyService")).andReturn(service);
        expect(MyFacade.getMyStuff(MyVO)).andReturn(MyVOList);
        expect(bean.getMyFacesContextSessionMap()).andReturn(
                new HashMap<String, Object>());
        replay(bean, MyFacade);
        bean.setService(service);
        String returnString = bean.myStuff();
        assertEquals("myNo", returnString);
    }

当我在 eclipse 中将其作为 junit 运行时，出现此错误:

java.lang.AssertionError: 
    Unexpected method call MyFacadeLocal.getMyStuff(MyVO@8c64cdd8):
    MyFacadeLocal.getMyStuff(MyVO@d79a467f): expected: 1, actual: 0
    at org.easymock.internal.MockInvocationHandler.invoke(MockInvocationHandler.java:44)
    at org.easymock.internal.ObjectMethodsFilter.invoke(ObjectMethodsFilter.java:85)
    at $Proxy1.getMyStuff(Unknown Source)

我不明白如何纠正这个问题。有人可以帮我吗？

Answer 1

ArgumentMatcher 示例:

public class CollectionCountMatcher implements IArgumentMatcher
{
    private int expectedCount;

    public CollectionCountMatcher(int count) {
        super();
        this.expectedCount = count;
    }

    public boolean matches(Object actual) {
         return (actual instanceof Collection) 
         && ((Collection) actual).size() == expectedCount;
    }

    public static final Integer eqObject(Integer inValue) {
        EasyMock.reportMatcher(new CollectionCountMatcher (inValue));
        return inValue;
    }

    public void appendTo(StringBuffer buffer) {
        buffer.append("collectionContains(" + expectedCount + ")");
    }
}

您创建一个 MyVOMatcher 并调用您的模拟方法，如下所示:

expect(MyFacade.getMyStuff(MyVOMatcher.eqObject(MyVO))).andReturn(MyVOList);

编辑:或者你也可以做什么，但这种工作方式不太严格，并且不会检查不同的对象，这样做是这样的:

expect(MyFacade.getMyStuff(EasyMock.anyObject(myVO.class))).andReturn(MyVOList);

这肯定有效，但当然你可以传递每个可能的参数，只要它是 MyVO 类型