Easymock对象数组匹配器

Question

I have the following class:

public class Listener{

@Autowired
private Handler handler;


public void receiveMessage(Message<String> message) {
    String xmlMessage = message.getPayload().toString();

    XStream xstream = new XStream();
    xstream.processAnnotations(InfoTO.class);

    infoTO = (InfoTO) xstream.fromXML(xmlMessage);


    UserDetailTO[] userDetailTO = { new UserDetailTO(infoTO.getUserId(), null) };
    handler.sendEmail(userDetailTO);

}

}

My test method:

   @Test
public void testRecieve() {
    UserDetailTO[] userDetails={new UserDetailTO("zzzz",null)};

    Handler handlerMock=EasyMock.createMock(Handler.class);
    handlerMock.sendEmail(aryEq(userDetails));
    EasyMock.expectLastCall();
    EasyMock.replay(handlerMock);
    ReflectionTestUtils.setField(listener, "handler", handlerMock);

    String message = "Test Payload";
    Message<String> finalMessage = MessageBuilder.withPayload(message).build();
    listener.receiveMessage(finalMessage);

}

When i run this test class, i get Assertion error for Unexpected method call. Its expected because in the test class, the UserDetailTO instance inserted in the array will not match with the instance created in the Listener class.

But then, how to resolve this problem?

Answer 1

It looks like a problem with UserDetailTO.equals(Object) method. Are 2 UserDetailTO objects equal if they have the same user id and null 2nd parameter?

Also your line EasyMock.expectLastCall(); isn't needed. When a mock is in replay mode, all void methods are automatically "expected". You only need to call EasyMock.expectLastCall() if you want to perform some other behavior like throw an exception or invoke an IAnswer when that void method is called.

For example if you wanted the sendEmail method to throw an Exception:

Exception expectedException = new Exception(...);
...
handlerMock.sendEmail(aryEq(userDetails));
EasyMock.expectLastCall().andThrow(expectedException);

EasyMock.replay(handlerMock);