@@ -0,0 +1,448 @@
+package com.alibaba.json.bvt.issue_1100;%0A%0Aimport com.alibaba.fastjson.JSON;%0Aimport junit.framework.TestCase;%0A%0Aimport java.io.ByteArrayOutputStream;%0A%0A/**%0A * Created by wenshao on 11/04/2017.%0A */%0Apublic class Issue1140 extends TestCase %7B%0A    public void test_for_issue() throws Exception %7B%0A        String s = %22%5CuD83C%5CuDDEB%5CuD83C%5CuDDF7%22;%0A%0A        ByteArrayOutputStream out = new ByteArrayOutputStream();%0A%0A        JSON.writeJSONString(out, s);%0A    %7D%0A%7D%0A

add testcase for issue #1140