1// Copyright 2014 the V8 project authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// Properties are serialized once.
6assertEquals('{"x":1}', JSON.stringify({ x : 1 }, ["x", 1, "x", 1]));
7assertEquals('{"1":1}', JSON.stringify({ 1 : 1 }, ["x", 1, "x", 1]));
8assertEquals('{"1":1}', JSON.stringify({ 1 : 1 }, ["1", 1, "1", 1]));
9assertEquals('{"1":1}', JSON.stringify({ 1 : 1 }, [1, "1", 1, "1"]));
10
11// Properties are visited at most once.
12var fired = 0;
13var getter_obj = { get x() { fired++; return 2; } };
14assertEquals('{"x":2}', JSON.stringify(getter_obj, ["x", "y", "x"]));
15assertEquals(1, fired);
16
17// Order of the replacer array is followed.
18assertEquals('{"y":4,"x":3}', JSON.stringify({ x : 3, y : 4}, ["y", "x"]));
19assertEquals('{"y":4,"1":2,"x":3}',
20             JSON.stringify({ x : 3, y : 4, 1 : 2 }, ["y", 1, "x"]));
21
22// With a replacer array the value of the property is retrieved using [[Get]]
23// ignoring own and enumerability.
24var a = { x : 8 };
25assertEquals('{"__proto__":{"__proto__":null},"x":8}',
26             JSON.stringify(a, ["__proto__", "x", "__proto__"]));
27a.__proto__ = { x : 7 };
28assertEquals('{"__proto__":{"__proto__":{"__proto__":null},"x":7},"x":8}',
29             JSON.stringify(a, ["__proto__", "x"]));
30var b = { __proto__: { x: 9 } };
31assertEquals('{}', JSON.stringify(b));
32assertEquals('{"x":9}', JSON.stringify(b, ["x"]));
33var c = {x: 10};
34Object.defineProperty(c, 'x', { enumerable: false });
35assertEquals('{}', JSON.stringify(c));
36assertEquals('{"x":10}', JSON.stringify(c, ["x"]));
37
38// Arrays are not affected by the replacer array.
39assertEquals("[9,8,7]", JSON.stringify([9, 8, 7], [1, 1]));
40var mixed_arr = [11,12,13];
41mixed_arr.x = 10;
42assertEquals('[11,12,13]', JSON.stringify(mixed_arr, [1, 0, 1]));
43
44// Array elements of objects are affected.
45var mixed_obj = { x : 3 };
46mixed_obj[0] = 6;
47mixed_obj[1] = 5;
48assertEquals('{"1":5,"0":6}', JSON.stringify(mixed_obj, [1, 0, 1]));
49
50// Nested object.
51assertEquals('{"z":{"x":3},"x":1}',
52             JSON.stringify({ x: 1, y:2, z: {x:3, b:4}}, ["z","x"]));
53
54// Objects in the replacer array are ignored.
55assertEquals('{}',
56             JSON.stringify({ x : 1, "1": 1 }, [{}]));
57assertEquals('{}',
58             JSON.stringify({ x : 1, "1": 1 }, [true, undefined, null]));
59assertEquals('{}',
60             JSON.stringify({ x : 1, "1": 1 },
61                            [{ toString: function() { return "x";} }]));
62assertEquals('{}',
63             JSON.stringify({ x : 1, "1": 1 },
64                            [{ valueOf: function() { return 1;} }]));
65
66// Make sure that property names that clash with the names of Object.prototype
67// still works.
68assertEquals('{"toString":42}', JSON.stringify({ toString: 42 }, ["toString"]));
69
70// Number wrappers and String wrappers should be unwrapped.
71assertEquals('{"1":1,"s":"s"}',
72             JSON.stringify({ 1: 1, s: "s" },
73                            [new Number(1), new String("s")]));
74