“面向对象软件”这本书在jMock中提供了几个例子,其中状态是显式的,而不会通过API暴露.我真的很喜欢这个想法.有没有办法在Mockito这样做？
这是这本书的一个例子
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);
}
}
解决方法
我用间谍进行自我相同的练习：
http://docs.mockito.googlecode.com/hg/latest/org/mockito/Mockito.html#13
我把我的SniperListener模拟器变成一个间谍：
private final SniperListener sniperListenerSpy = spy(new SniperListenerStub()); private final AuctionSniper sniper = new AuctionSniper(auction,sniperListenerSpy);
并且还创建了SniperListener的一个stubbed实现：
private class SniperListenerStub implements SniperListener {
@Override
public void sniperLost() {
}
@Override
public void sniperBidding() {
sniperState = SniperState.bidding;
}
@Override
public void sniperWinning() {
}
}
这本书使用JMock的“States”,但是我使用了一个嵌套的枚举：
private SniperState sniperState = SniperState.idle;
private enum SniperState {
idle,winning,bidding
}
然后,您必须使用常规JUnit断言来测试状态：
@Test
public void reportsLostIfAuctionClosesWhenBidding() {
sniper.currentPrice(123,45,PriceSource.FromOtherBidder);
sniper.auctionClosed();
verify(sniperListenerSpy,atLeastOnce()).sniperLost();
assertEquals(SniperState.bidding,sniperState);
}
