String result = normalizer.normalize("ａｂｃ", "field", "en", "ja");

        assertEquals("abc", result);
    }

    @Test
    public void test_japaneseCharactersUnchanged() throws Exception {
        FullWidthToHalfWidthAlphabetNormalizer normalizer = new FullWidthToHalfWidthAlphabetNormalizer();

        String result = normalizer.normalize("日本語", "field");