Mock.Of and function parameters in setup

[Standa K.]

Hello,

just today I discovered this Mock.Of<Type>() style of creating mocks when I was searching for a fluent Moq interface (that is, one which would allow me to create the mock and specify its behavior in one step unlike the Setup() method I've been using so far).

However, I can't figure out how to specify a behavior of a mock's method call which depends on a parameter.

I've read through the "Mock.Of - how to specify behavior?" thread, but all of the examples given there were constant functions (their output didn't depend on the actual parameters passed).

Is there way to use parameters when using Mock.Of?

[Daniel Cazzulino]

Don't think that's supported, nop... 

If you can guess a syntax that would compile where you could use the parameters, we can spike implementing it :)

/kzu

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Daniel Cazzulino

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[Ale Miralles]

Hi Standa, you mean something like this:

public interface IFoo {

    int Bar(string arg);

}

[Test]

public void ResultBasedOnInputParams() {

    var mock = Mock.Of<IFoo>(f => 

           f.Bar("foo") == 123 

        && f.Bar("bar") == 456 

        && f.Bar("baz") == 789);

    Assert.AreEqual(123, mock.Bar("foo"));

    Assert.AreEqual(456, mock.Bar("bar"));

    Assert.AreEqual(789, mock.Bar("baz"));

    Assert.AreEqual(0, mock.Bar("anything else"));

}

 

Not sure if it is what you are looking for, but this way you can specify different results based on the value of an input params….

 

Ale Miralles.

http://amiralles.com.ar

http://blog.amiralles.com.ar