public void AnObjectAddedTwiceIsOnlyDisposedOnce()
{
var mock = MockRepository.GenerateMock<IDisposable>();
mock.Expect(d => d.Dispose()).Repeat.Once();
var ctx = new StandardContext();
ctx.Add(mock);
ctx.Add((object)mock);
ctx.Dispose();
mock.VerifyAllExpectations();
}
