mockito与jMock的州有相同的习惯用语吗？ [英] Does mockito have an equivalent idiom to jMock's States?

问题描述

本书不断增长的面向对象软件在jMock中提供了几个示例，其中状态是明确的，而不是通过API公开它。我真的喜欢这个主意。有没有办法在Mockito中做到这一点？

The book Growing Object Oriented Software gives several examples in jMock where the state is made explicit without exposing it through an API. I really like this idea. Is there a way to do this in Mockito?

这是书中的一个例子

public class SniperLauncherTest {
   private final States auctionState = context.states("auction state")
                                              .startsAs("not joined");

   @Test public void addsNewSniperToCollectorAndThenJoinsAuction() {
     final String itemId = "item 123";
     context.checking(new Expectations() {{
       allowing(auctionHouse).auctionFor(itemId); will(returnValue(auction));

       oneOf(sniperCollector).addSniper(with(sniperForItem(item)));
                                   when(auctionState.is("not joined"));      
       oneOf(auction).addAuctionEventListener(with(sniperForItem(itemId)));
                                   when(auctionState.is("not joined"));
       one(auction).join(); then(auctionState.is("joined"));
     }});

     launcher.joinAuction(itemId);
   }
}

推荐答案

我使用间谍进行同样的练习：

I used a spy for the self same exercise:

http://docs.mockito.googlecode.com/hg/latest/org/mockito/Mockito.html#13

我将我的SniperListener模型改为间谍：

I changed my SniperListener mock into a spy thus:

private final SniperListener sniperListenerSpy = spy(new SniperListenerStub());
private final AuctionSniper sniper = new AuctionSniper(auction, sniperListenerSpy);

并且还创建了SniperListener的存根实现：

And also created a stubbed implementation of SniperListener:

private class SniperListenerStub implements SniperListener {
    @Override
    public void sniperLost() {
    }

    @Override
    public void sniperBidding() {
        sniperState = SniperState.bidding;
    }

    @Override
    public void sniperWinning() {
    }
}

本书使用了JMock的States，但我使用的是嵌套枚举：

The book uses JMock's "States", but I used a nested enum instead:

private SniperState sniperState = SniperState.idle;

private enum SniperState {
    idle, winning, bidding
}

然后你必须使用常规的JUnit断言来测试状态：

You then have to use regular JUnit asserts to test for the state:

@Test
public void reportsLostIfAuctionClosesWhenBidding() {
    sniper.currentPrice(123, 45, PriceSource.FromOtherBidder);
    sniper.auctionClosed();
    verify(sniperListenerSpy, atLeastOnce()).sniperLost();
    assertEquals(SniperState.bidding, sniperState);
}

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