如何允许实现使用自己的参数调用模拟(moq)方法?

当测试使用moq依赖项的类时,我希望该类为moq方法提供参数,而不是在测试用例中自己创建参数。

我有一个接口,它有一个方法,它接受一个参数。

public interface IMessageForwardProxy
{
    IMessage Send(IMessage request);
}

我有一个类,根据类上调用的方法,用许多不同的参数调用此方法。例如:

public class Messenger 
{
    private IMessageForwardProxy _link;

    public Messenger(IMessageForwardProxy proxy) { _link = proxy; }

    public bool DeliverSomeMessage() {
        IMessage m1 = new MessageOne();
        var response = _link.Send(m1);
        return response.Succeeded;
    }

    public bool DeliverSomeOtherMessage() {
        IMessage m2 = new MessageTwo();
        var response = _link.Send(m2);
        return response.Succeeded;
    }
}

现在如您所见,messenger类负责创建传递给接口的send方法的参数。当我测试这个信使类时,我想模拟IMessageForwardProxy的发送方法,而不在测试中提供参数。我把提供参数看作是将测试耦合到实现(和复制工作)上。

如果我想在messenger类上测试deliversomeothermessage方法,我将如何模拟IMessageForwardProxy?

[Test]
public void TestDeliverSomeOtherMessage() {
    var mockProxy = new Mock<IMessageForwardProxy>();

    // This is what I want to avoid, since the method I'm testing creates this argument
    IMessage m2 = new MessageTwo(); 
    mockProxy.Setup(m => m.Send(m2)).Returns(new ReturnMessageTwo());

    // Can I do something like this instead? Define the signature, but not the param?
    mockProxy.Setup(m => m.Send(typeof(IMessage))).Returns(new ReturnMessageTwo());

    var messenger = new Messenger(mockProxy.Object);
    Assert.True(messenger.DeliverSomeOtherMessage());

}