public void GetAbsSemitonesDifferenceNotesZero()
        {
            int diff = Operators.GetAbsSemitonesDifference(Note.A, Note.A);

            Assert.AreEqual(0, diff);
        }
        public void GetAbsSemitonesDifferenceNotesMultipleSemitones()
        {
            int diff = Operators.GetAbsSemitonesDifference(Note.Fsharp, Note.Dsharp);

            Assert.AreEqual(3, diff);
        }
        public void GetAbsSemitonesDifferenceNotesNegativeMultipleSemitones()
        {
            int diff = Operators.GetAbsSemitonesDifference(Note.G, Note.B);

            Assert.AreEqual(8, diff);
        }
        public void GetAbsSemitonesDifferenceNotesNegativeOneSemitone()
        {
            int diff = Operators.GetAbsSemitonesDifference(Note.A, Note.Asharp);

            Assert.AreEqual(11, diff);
        }