xUnit:如何断言其他类型的事件然后 EventHandler<EventArgs> [英] xUnit: how to Assert other event of types then EventHandler&lt;EventArgs&gt;

问题描述

我是单元测试的初学者，我已经在网上搜索了几个小时，但仍然找不到我的简单问题的答案.

I'm a beginner in unit testing and I've been searching the net for couple of hours now and I still can't find the answer to my simple question.

我有一堂课有以下事件:

I have a class with the following event:

event Action<ITagData> OnTagHandled

现在我想编写一个单元测试来断言事件是否已引发，但是当我编写如下内容时:

Now I want to write a unit test to assert if the event has been raised but when I write something like:

Assert.Raises<EventArgs>(handler => m_rssiHander.OnTagHandled += handler,
    handler => m_rssiHander.OnTagHandled -= handler, () => { });

我收到如下错误:

不能将类型 System.EventHandler 隐式转换为 System.Action

Cannot implicitly convert type System.EventHandler to System.Action

谁能告诉我如何断言 Action 类型的事件?

Can someone tell me how I can assert an event of type Action<T>?

推荐答案

最后我决定这样做:

 bool wasEventRaised = false;
 m_rssiHandler.OnTagHandled += data => { wasEventRaised = true;};

 // Act
 m_rssiHandler.ProcessTag(m_tag);

 // Assert
 Assert.True(wasEventRaised);

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