public void Defers_Scoring_To_Scorer() { const int mockedScore = 555; WrappedBitmap wb = new WrappedBitmap(new Bitmap(1, 1)); _scorer.Score(null).ReturnsForAnyArgs(mockedScore); var score = _recogniser.Score(wb); _scorer.Received(1).Score(wb); Assert.AreEqual(mockedScore, score); }