c# - 如何通过 RhinoMocks 中的指定条件从方法返回值？

Question

如何使用 RhinoMocks 模拟以下行为？

被测试的方法在接口(interface)上调用 ReceivePayment 方法。

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

接口(interface)有 CashAccepted 事件。如果此事件已被多次调用(或由条件调用)，则 ReceivePayment 应返回 true。

如何完成这样的任务？

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。但是下一行:paymentSysProvider.Raise(...) 正在等待 ReceivePayment stub 的完成!

Answer 1

您可以使用WhenCalled。其实我不明白你的问题(事件是由模拟触发的还是被测单元触发的？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.