public void MusicSelection_MethodSetTitle_ArgumentTitleIsWhiteSpace_ThrowsArgumentException()
        {
            //Arrange
            Contributor        composer         = new Contributor(new Name("David", "", "Haas"), "Composer");
            MusicSelectionMock myMusicSelection =
                new MusicSelectionMock("9999991e810c19729de860ea", "507f191e810c19729de860ea", "Blest Are They", composer);

            //Act
            myMusicSelection.setTitle("   ");
        }
        public void MusicSelection_MethodSetTitle_FieldTitle_LowerCaseSetCorrectly()
        {
            //Arrange
            Contributor        composer         = new Contributor(new Name("David", "", "Haas"), "Composer");
            MusicSelectionMock myMusicSelection =
                new MusicSelectionMock("9999991e810c19729de860ea", "507f191e810c19729de860ea", "Blest Are They", composer);

            //Act
            myMusicSelection.setTitle(" You Are Mine ");

            //Assert
            Assert.AreEqual("you are mine", myMusicSelection.Title_LowerCase);
        }