@@ -0,0 +1,716 @@
+package com.alibaba.json.bvt.bug;%0A%0Aimport org.junit.Assert;%0A%0Aimport com.alibaba.fastjson.JSON;%0Aimport com.alibaba.fastjson.JSONObject;%0Aimport com.alibaba.fastjson.serializer.SerializerFeature;%0A%0Aimport junit.framework.TestCase;%0A%0Apublic class Issue743 extends TestCase %7B%0A%0A    public void test_for_issue() throws Exception %7B%0A        String temp = %22%7B%5C%22option_1%5C%22: %5C%22%5C%5Cu4e0d%5C%5Cu5403%5C%5Cu6216%5C%5Cu5c11%5C%5Cu4e8e1%5C%5Cu6b21%5C%22%7D%22;%0A        JSONObject object = JSON.parseObject(temp);%0A        Assert.assertEquals(%22%7B%5C%22option_1%5C%22:%5C%22%E4%B8%8D%E5%90%83%E6%88%96%E5%B0%91%E4%BA%8E1%E6%AC%A1%5C%22%7D%22, JSON.toJSONString(object));%0A        Assert.assertEquals(%22%7B%5C%22option_1%5C%22:%5C%22%5C%5Cu4E0D%5C%5Cu5403%5C%5Cu6216%5C%5Cu5C11%5C%5Cu4E8E1%5C%5Cu6B21%5C%22%7D%22, JSON.toJSONString(object, SerializerFeature.BrowserCompatible));%0A    %7D%0A%7D%0A

add testcase for issue #743