package com.alibaba.json.bvt.jdk8; import java.util.OptionalDouble; import org.junit.Assert; import com.alibaba.fastjson.JSON; import junit.framework.TestCase; public class OptionalDouble_Test extends TestCase { public void test_optional() throws Exception { Model model = new Model(); model.value = OptionalDouble.empty(); String text = JSON.toJSONString(model); Assert.assertEquals("{\"value\":null}", text); Model model2 = JSON.parseObject(text, Model.class); Assert.assertEquals(model2.value, model.value); } public static class Model { public OptionalDouble value; } }