[TestCase("タイカイ ー☆", "taikai -☆")] // it's converted by package, let's skip this checking.
        public void TestToRomaji(string text, string actual)
        {
            var romaji = JpStringUtils.ToRomaji(text);

            Assert.AreEqual(romaji, actual);
        }
        public void TestToKatakana(string text, string actual)
        {
            var katakana = JpStringUtils.ToKatakana(text);

            Assert.AreEqual(katakana, actual);
        }