public void Returns_the_correct_album_length(string tracks, string expectedDuration)
        {
            var albumDuration = new AlbumDuration();

            var result = albumDuration.CalculateDuration(tracks);

            result.Should().BeEquivalentTo(expectedDuration);
        }
        public void Should_Fail_Passes_In_Incorrect_Album_Length()
        {
            var albumnDuration = new AlbumDuration();

            var tracks   = "2:15,3:50,4:21,3:42,6:08";
            var duration = "00:20:01";

            var result = albumnDuration.CalculateDuration(tracks);

            result.Should().NotBe(duration);
        }