public void TestInstrumentPart_MethodsetNumberOfCopies_ArgumentNumberIsLessThanZero_ThrowsArgumentException()
        {
            //Arrange
            InstrumentPart myInstrumentPart;

            myInstrumentPart = new InstrumentPart(new Instrument("Trombone", true), 5);

            //Act
            myInstrumentPart.setNumberOfCopies(-1);
        }
        public void TestInstrumentPart_MethodSetNumberOfCopies()
        {
            //Arrange
            InstrumentPart myInstrumentPart;

            myInstrumentPart = new InstrumentPart(new Instrument("Trombone", true), 5);

            //Act
            myInstrumentPart.setNumberOfCopies(10);

            //Assert
            Assert.AreEqual(10, myInstrumentPart.NumberOfCopies);
        }