Saturday, September 5, 2009

The other way of faking it

I’ve added a new way to create fake objects in FakeItEasy. You might call the “traditional” way of doing it in FakeItEasy is the “Rhino-style”:

public static void TraditionalWay()
    var foo = A.Fake<IFoo>();
    foo.Configure().CallsTo(x => x.Baz()).Returns(10);

    int value = foo.Baz();

    Fake.Assert(foo).WasCalled(x => x.Baz());

When creating fakes in this way the returned faked object is of the type specified in the A.Fake-call, faking an IFoo returns an IFoo. When creating a fake the new way, which we might call the “Moq-style” you instead create a fake object that provides an api for configuring the faked object as well as a reference to the faked object:

public static void TheOtherWay()
    var foo = new Fake<IFoo>();
    foo.CallsTo(x => x.Baz()).Returns(10);

    int value = foo.FakedObject.Baz();

    foo.Assert().WasCalled(x => x.Baz());

Both styles are equally supported so that the developer can choose what ever style he/she is most comfortable with.

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