String result = normalizer.normalize("ｱｲｳ", "field", "ja");

        assertEquals("アイウ", result);
    }

    @Test
    public void test_mergeChar() throws Exception {
        assertEquals('ガ', HankakuKanaToZenkakuKana.mergeChar('ｶ', 'ﾞ'));
        assertEquals('ギ', HankakuKanaToZenkakuKana.mergeChar('ｷ', 'ﾞ'));