public void TestReverseConversion(string inputYttFilePath)
        {
            SubtitleDocument yttDoc = new YttDocument(inputYttFilePath);
            SubtitleDocument assDoc = new AssDocument(yttDoc);

            try
            {
                assDoc.Save("actual.ass");

                assDoc = new AssDocument("actual.ass", AssStyleOptionsList.LoadFromString(Resources.DefaultStyleOptions));
                yttDoc = new YttDocument(assDoc);
                yttDoc.Save("actual.ytt");

                string actual   = File.ReadAllText("actual.ytt");
                string expected = RoundYttTimestamps(File.ReadAllText(inputYttFilePath));
                Assert.That(actual, Is.EqualTo(expected));
            }
            finally
            {
                File.Delete("actual.ass");
                File.Delete("actual.ytt");
            }
        }