Question

如何使用RhinoMocks模拟以下行为？

测试方法在接口上调用ReceivePayment方法。

public void TestedMethod(){
    bool result = interface.ReceivePayment();        
}

Interface具有CashAccepted事件。如果多次（或通过条件）调用此事件，则ReceivePayment返回true。

如何完成这项任务？

更新

现在我执行以下操作：

UpayError error;
        paymentSysProvider.Stub(i => i.ReceivePayment(ticketPrice,
            App.Config.SellingMode.MaxOverpayment, uint.MaxValue, out error))
            .Do( new ReceivePaymentDel(ReceivePayment));

        paymentSysProvider.Stub(x => x.GetPayedSum()).Return(ticketPrice);

        session.StartCashReceiving(ticketPrice);

        paymentSysProvider.Raise(x => x.CashInEvent += null, cashInEventArgs);

public delegate bool ReceivePaymentDel(uint quantityToReceive, uint maxChange, uint maxTimeout, out UpayError error);
public bool ReceivePayment(uint quantityToReceive, uint maxChange, uint maxTimeout, out UpayError error) {
        Thread.Sleep(5000);
        error = null;
        return true;
    }

StartCashReceiving立即返回，因为里面有任务启动。但下一行：paymentSysProvider.Raise（...）正在等待ReceivePayment存根的完成！

Answer 1

你在测试ReceivePayment吗？如果没有，您真的不应该担心该接口是如何实现的（参见http://blinkingcaret.wordpress.com/2012/11/20/interaction-testing-fakes-mocks-and-stubs/）。

如果必须，可以使用.Do扩展方法，例如：

interface.Stub(i => i.ReceivePayment()).Do((Func<bool>) (() => if ... return true/false;));

请参阅： http://ayende.com/blog/3397/rhino-mocks-3-5-a-feature-to-be-proud-of-seamless-do http://weblogs.asp.net/psteele/archive/2011/02/02/using-lambdas-for-return-values-in-rhino-mocks.aspx

Answer 2

您可以使用WhenCalled。实际上我不明白你的问题（模拟或被测单位是否触发了事件？谁在处理事件？）

有一些示例代码：

bool fired = false;

// set a boolean when the event is fired.
eventHandler.Stub(x => x.Invoke(args)).WhenCalled(call => fired = true);

// dynamically return whether the eventhad been fired before.
mock
  .Stub(x => x.ReceivePayment())
  .WhenCalled(call => call.ReturnValue = fired)
  // make rhino validation happy, the value is overwritten by WhenCalled
  .Return(false);

当您在测试中触发事件时，您还可以在触发后重新配置模拟：

mock
  .Stub(x => x.ReceivePayment())
  .Return(false);

paymentSysProvider.Raise(x => x.CashInEvent += null, cashInEventArgs);

mock
  .Stub(x => x.ReceivePayment())
  .Return(true)
  .Repeat.Any(); // override previous return value.

如何在RhinoMocks中通过指定条件从方法返回值？

2 个答案: