@@ -0,0 +1,508 @@
+package com.alibaba.json.bvt.issue_1400;%0A%0Aimport com.alibaba.fastjson.JSON;%0Aimport junit.framework.TestCase;%0A%0Aimport java.time.LocalDateTime;%0A%0Apublic class Issue1450 extends TestCase %7B%0A    public void test_for_issue() throws Exception %7B%0A        LocalDateTime localDateTime = LocalDateTime.of(2018, 8, 31, 15, 26, 37, 1);%0A        String json = JSON.toJSONStringWithDateFormat(localDateTime, %22yyyy-MM-dd HH:mm:ss%22);//2018-08-31T15:26:37.000000001%0A        assertEquals(%22%5C%222018-08-31 15:26:37%5C%22%22, json);%0A    %7D%0A%7D%0A

add testcase for issue #1450