add testcase for issue #736

core/src/test/java/com/alibaba/fastjson2/issues/Issue736.kt

@@ -0,0 +1,54 @@
+package com.alibaba.fastjson2.issues
+
+import com.alibaba.fastjson2.JSON
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Test
+import java.util.*
+
+class Issue736 {
+    @Test
+    fun test() {
+        var bean = Bean(
+            "","","",1,2,3
+        )
+        var json = JSON.toJSONString(bean)
+        var bean1 = JSON.parseObject(json, Bean::class.java)
+        assertEquals(bean.a, bean1.a)
+    }
+}
+
+data class Bean (
+    var a: String,
+    var b: String,
+    var c: String,
+    var d: Int = 1,
+    var e: Int = 9999,
+    var f: Int = 0,
+    var g: Calendar = Calendar.getInstance(),
+    var h: Calendar = Calendar.getInstance(),
+    var i: Calendar = Calendar.getInstance(),
+    var j: String = "",
+    var k: String = "",
+    var l: String = "",
+    var m: Int = 0,
+    var n: String = "",
+    var o: Int = 0,
+    var p: Float = 0f,
+    var q: Float = 0f,
+    var r: Boolean = false,
+    var s: Boolean = false,
+    var t: Boolean = false,
+    var u: String = "",
+    var v: Int = 0,
+    var w: Int = 0,
+    var x: Int = 0,
+    var y: String = "",
+    var z: String = "",
+    var a1: Int = 1,
+    var a2: Calendar = Calendar.getInstance(),
+    var a3: Int = 0
+) {
+    var a4: String = ""
+    var a5: String = ""
+    var a6: Int = 0
+}