### Question:
JsonConversionUtil { static Object convertToJsonValue(String value) throws JSONException { if (value == null) { return null; } else if (value.startsWith("(") && value.endsWith(")")) { return new JSONArray('[' + value.substring(1, value.length() - 1) + ']'); } else { try { JSONArray parsedArray = new JSONArray('[' + value + ']'); if (parsedArray.length() == 1) { Object obj = parsedArray.get(0); if (obj instanceof Double && !obj.toString().equals(value)) { return value; } return obj; } return parsedArray; } catch (JSONException je) { return value; } } } private  JsonConversionUtil(); @SuppressWarnings("unchecked") static JSONObject fromRequest(HttpServletRequest request); static Map<String, String> fromJson(JSONObject obj); static boolean isAllLiterals(JSONArray jsonArr);  }### Answer:
@Test public void testValueToJsonParsing() throws Exception { String longNumber = "108502345354398668456"; assertJsonEquals(JsonConversionUtil.convertToJsonValue(longNumber), longNumber); String longDoubleOverflow = "108502345354398668456.1234"; assertJsonEquals(JsonConversionUtil.convertToJsonValue(longDoubleOverflow), longDoubleOverflow); String longDoubleFractionPart = "1.108502345354398668456108502345354398668456"; assertJsonEquals(JsonConversionUtil.convertToJsonValue(longDoubleFractionPart), longDoubleFractionPart); assertJsonEquals(JsonConversionUtil.convertToJsonValue("12345"), 12345); assertJsonEquals(JsonConversionUtil.convertToJsonValue("12.345"), 12.345); assertJsonEquals(JsonConversionUtil.convertToJsonValue("abc"), "abc"); assertJsonEquals(JsonConversionUtil.convertToJsonValue("\"a,b,c\""), "a,b,c"); assertJsonEquals(JsonConversionUtil.convertToJsonValue("true"), true); assertJsonEquals(JsonConversionUtil.convertToJsonValue("false"), false); assertJsonEquals(JsonConversionUtil.convertToJsonValue("null"), JSONObject.NULL); assertJsonEquals(JsonConversionUtil.convertToJsonValue("'abc'"), "abc"); assertJsonEquals(JsonConversionUtil.convertToJsonValue("a,b,c"), new JSONArray(Lists.newArrayList("a", "b", "c"))); assertJsonEquals(JsonConversionUtil.convertToJsonValue("1,2,3,true,false,null"), new JSONArray(Lists.<Object>newArrayList(1, 2, 3, true, false, null))); assertJsonEquals(JsonConversionUtil.convertToJsonValue("(1)"), new JSONArray(Lists.newArrayList(1))); assertJsonEquals(JsonConversionUtil.convertToJsonValue("(true)"), new JSONArray(Lists.newArrayList(true))); }