如何使起订量忽略的ref或out参数 [英] How to make Moq ignore arguments that are ref or out

问题描述

在RhinoMocks的，你可以告诉你的嘲弄来IgnoreArguments作为一个毯子声明。在起订量，现在看来，你必须指定It.IsAny（）为每一个参数。然而，这并不对ref和out参数工作。如何测试下面的方法，我需要MOQ内部服务调用返回一个特定的结果：

In RhinoMocks, you can just tell your mocks to IgnoreArguments as a blanket statement. In Moq, it seems, you have to specify It.IsAny() for each argument. However, this doesn't work for ref and out arguments. How can I test the following method where I need to Moq the internal service call to return a specific result:

public void MyMethod() {
    // DoStuff

    IList<SomeObject> errors = new List<SomeObject>();
    var result = _service.DoSomething(ref errors, ref param1, param2);

    // Do more stuff
}

测试方法：

Test method:

public void TestOfMyMethod() {
    // Setup
    var moqService = new Mock<IMyService>();
    IList<String> errors;
    var model = new MyModel();

    // This returns null, presumably becuase "errors" 
    // here does not refer to the same object as "errors" in MyMethod
    moqService.Setup(t => t.DoSomething(ref errors, ref model, It.IsAny<SomeType>()).
        Returns(new OtherType()));  
}

更​​新：那么，从裁判改变错误走出去工程。因此，它看起来像真正的问题是有，你不能注入ref参数。

UPDATE: So, changing errors from "ref" to "out" works. So it seems like the real issue is having a ref parameter that you can't inject.

推荐答案

正如你已经想通了问题是你的 REF 参数。

As you already figured out the problem is with your ref argument.

起订量目前仅支持精确匹配为 REF 参数，这意味着只调用如果你通过相同的实例您在设置用什么相匹配。所以没有一般​​匹配So It.IsAny（）将无法工作。

Moq currently only support exact matching for ref arguments, which means the call only matches if you pass the same instance what you've used in the Setup. So there is no general matching so It.IsAny() won't work.

请参阅起订量的快速入门

// ref arguments
var instance = new Bar();
// Only matches if the ref argument to the invocation is the same instance
mock.Setup(foo => foo.Submit(ref instance)).Returns(true);

和起订量的论坛：

参考匹配意味着，如果该方法是$设置只匹配b调用它与同一实例$ b。 It.IsAny返回null，所以大概
不是你要找的东西。

Ref matching means that the setup is matched only if the method is called with that same instance. It.IsAny returns null, so probably not what you're looking for.

使用相同的实例中设置为一个在实际通话和
设置将匹配。

Use the same instance in the setup as the one in the actual call, and the setup will match.

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