犀牛制品：对存根的方法重新分配一个新的结果 [英] Rhino Mocks: Re-assign a new result for a method on a stub

问题描述

我知道我能做到这一点：

I know I can do this:

IDateTimeFactory dtf = MockRepository.GenerateStub<IDateTimeFactory>();
dtf.Now = new DateTime();
DoStuff(dtf); // dtf.Now can be called arbitrary number of times, will always return the same value
dtf.Now = new DateTime()+new TimeSpan(0,1,0);  // 1 minute later
DoStuff(dtf); //ditto from above

如果代替 IDateTimeFactory.Now 作为一个属性是一个方法的 IDateTimeFactory.GetNow（），我怎么做同样的事情？

What if instead of IDateTimeFactory.Now being a property it is a method IDateTimeFactory.GetNow(), how do I do the same thing?

根据犹大的建议，下面我已经重写我的SetDateTime helper方法如下：

As per Judah's suggestion below I have rewritten my SetDateTime helper method as follows:

	private void SetDateTime(DateTime dt) {
		Expect.Call(_now_factory.GetNow()).Repeat.Any();
		LastCall.Do((Func<DateTime>)delegate() { return dt; });
	}

但它仍然抛出的结果ICurrentDateTimeFactory.GetNow（）;已经被设置。错误。

but it still throws "The result for ICurrentDateTimeFactory.GetNow(); has already been setup." errors.

另外它还是不会有存根工作....

Plus its still not going to work with a stub....

推荐答案

乔治

使用更新后的code，我得到这个工作：

Using your updated code, I got this to work:

MockRepository mocks = new MockRepository();

[Test]
public void Test()
{
    IDateTimeFactory dtf = mocks.DynamicMock<IDateTimeFactory>();

    DateTime desiredNowTime = DateTime.Now;
    using (mocks.Record())
    {
        SetupResult.For(dtf.GetNow()).Do((Func<DateTime>)delegate { return desiredNowTime; });
    }
    using (mocks.Playback())
    {
        DoStuff(dtf); // Prints the current time    
        desiredNowTime += TimeSpan.FromMinutes(1);  // 1 minute later    
        DoStuff(dtf); // Prints the time 1 minute from now
    }
}

void DoStuff(IDateTimeFactory factory)
{
    DateTime time = factory.GetNow();
    Console.WriteLine(time);
}

FWIW，我不相信你可以做到这一点使用存根;你需要使用一个模拟代替。

FWIW, I don't believe you can accomplish this using stubs; you need to use a mock instead.

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