Mocking Void Methods with Rhino Mocks

I’ve finally found a need to mock a method that has a void return option.  Here is how to do it with Rhino Mocks.

// Setup the delete methods

Expect.Call(delegate { items.Delete(_TestItems[0].Item); })

    .Throw(new System.Data.ConstraintException("duplicate row"))

    .Repeat.AtLeastOnce();

You can also have it return nothing and now throw any exceptions like so.

Expect.Call(delegate { items.Delete(_TestItems[1].Item); })

    .Repeat.AtLeastOnce();