RhinoMocks - 在模拟接口上引发事件失败

Question

我在尝试引发 Rhino 模拟事件时收到以下错误

Invalid call, the last call has been used or no call has been made (make sure that you are calling a virtual (C#) / Overridable (VB) method)

这是一个将编译的最小示例。我做的一切都是正确的。

namespace StackOverFlow
{
    using NUnit.Framework;
    using Rhino.Mocks;
    using Rhino.Mocks.Interfaces;
    public delegate void EventHandler();
    public interface IHasEvent
    {
        event EventHandler InterfaceEvent;
    }
    public class ClassUnderTest
    {
        public ClassUnderTest(IHasEvent hasEvent)
        {
            this.EventCounter = 0;
            hasEvent.InterfaceEvent += this.IncrementCounter;
        }
        public int EventCounter { get; set; }
        private void IncrementCounter()
        {
            ++this.EventCounter;
        }
    }
    [TestFixture]
    public class RhinoMockTest
    {
        [Test]
        public void TestEventRaising()
        {
            IHasEvent mocked = MockRepository.GenerateMock<IHasEvent>();
            mocked.InterfaceEvent += null;
            LastCall.IgnoreArguments(); // <- Exception here
            IEventRaiser raiser = LastCall.GetEventRaiser();
            ClassUnderTest cut = new ClassUnderTest(mocked);
            raiser.Raise();
            Assert.AreEqual(1, cut.EventCounter);
        }
    }
}

我研究了关于stackoverflow和互联网的其他例子。我无法应用这些解决方案。我在此代码中没有看到错误。如何从模拟中引发事件？

Answer 1

您应该尝试较新的事件引发语法：

IHasEvent mocked = MockRepository.GenerateMock<IHasEvent>();
ClassUnderTest cut = new ClassUnderTest(mocked);
mocked.Raise(m => m.InterfaceEvent += null);
Assert.AreEqual(1, cut.EventCounter);