Moq：为方法引发，返回Task

Question

将Foo的返回类型从void更改为Task后：

interface A {
  event EventHandler<EventArgs> Created;
  Task FooAsync();
}

测试代码未编译（我希望在调用FooAsync之后引发事件）：

aMock.Setup(x=>x.FooAsync()).Raises(x => x.Created+= null, EventArgs.Empty);

如何解决这个问题？

Answer 1

这对我有用。

    [TestMethod]
    public async Task Test()
    {
        var task = Task.CompletedTask;
        var a = new Mock<A>();
        a.Setup(x => x.FooAsync()).Returns(task).Raises(x => x.Created += null, EventArgs.Empty);
        a.Object.Created += (s, e) =>
        {
        };

        await a.Object.FooAsync();
    }