}

    public void test_convertCha() {
        List<String> results = converter.convert("チャ", null);
        assertTrue(results.contains("tya"));
        assertTrue(results.contains("cha"));
    }

    public void test_convertJa() {
        List<String> results = converter.convert("ジャ", null);
        assertTrue(results.contains("zya"));
        assertTrue(results.contains("ja"));

        map.put("シュ", new String[] { "syu", "shu" });
        map.put("ショ", new String[] { "syo", "sho" });
        map.put("シェ", new String[] { "sye", "she" });

        map.put("チャ", new String[] { "tya", "cha" });
        map.put("チュ", new String[] { "tyu", "chu" });
        map.put("チョ", new String[] { "tyo", "cho" });
        map.put("チェ", new String[] { "tye", "che" });

        map.put("ニャ", new String[] { "nya" });