1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 // Flags: --allow-natives-syntax --expose-externalize-string
30 // Test JSON.stringify on the global object.
32 assertTrue(JSON.stringify(this).indexOf('"a":12345') > 0);
33 assertTrue(JSON.stringify(this, null, 0).indexOf('"a":12345') > 0);
35 // Test JSON.stringify of array in dictionary mode.
36 function TestStringify(expected, input) {
37 assertEquals(expected, JSON.stringify(input));
38 assertEquals(expected, JSON.stringify(input, null, 0));
44 array_2[1<<17] = function() { return 1; };
46 for (var i = 0; i < 17; i++) {
50 expected_1 = '[' + nulls + '1]';
51 expected_2 = '[' + nulls + 'null]';
52 TestStringify(expected_1, array_1);
53 TestStringify(expected_2, array_2);
55 // Test JSValue with custom prototype.
56 var num_wrapper = Object(42);
57 num_wrapper.__proto__ = { __proto__: null,
58 toString: function() { return true; } };
59 TestStringify('1', num_wrapper);
61 var str_wrapper = Object('2');
62 str_wrapper.__proto__ = { __proto__: null,
63 toString: function() { return true; } };
64 TestStringify('"true"', str_wrapper);
66 var bool_wrapper = Object(false);
67 bool_wrapper.__proto__ = { __proto__: null,
68 toString: function() { return true; } };
69 // Note that toString function is not evaluated here!
70 TestStringify('false', bool_wrapper);
74 var getter_obj = { get getter() {
78 TestStringify('{"getter":123}', getter_obj);
79 assertEquals(2, counter);
81 // Test toJSON function.
82 var tojson_obj = { toJSON: function() {
87 TestStringify('[1,2]', tojson_obj);
88 assertEquals(4, counter);
90 // Test that we don't recursively look for the toJSON function.
91 var tojson_proto_obj = { a: 'fail' };
92 tojson_proto_obj.__proto__ = { toJSON: function() {
96 TestStringify('{"a":1}', tojson_proto_obj);
98 // Test toJSON produced by a getter.
99 var tojson_via_getter = { get toJSON() {
106 TestStringify('321', tojson_via_getter);
108 assertThrows(function() {
109 JSON.stringify({ get toJSON() { throw "error"; } });
112 // Test toJSON with key.
113 tojson_obj = { toJSON: function(key) { return key + key; } };
114 var tojson_with_key_1 = { a: tojson_obj, b: tojson_obj };
115 TestStringify('{"a":"aa","b":"bb"}', tojson_with_key_1);
116 var tojson_with_key_2 = [ tojson_obj, tojson_obj ];
117 TestStringify('["00","11"]', tojson_with_key_2);
119 // Test toJSON with exception.
120 var tojson_ex = { toJSON: function(key) { throw "123" } };
121 assertThrows(function() { JSON.stringify(tojson_ex); });
122 assertThrows(function() { JSON.stringify(tojson_ex, null, 0); });
124 // Test toJSON with access to this.
125 var obj = { toJSON: function(key) { return this.a + key; }, a: "x" };
126 TestStringify('{"y":"xy"}', {y: obj});
128 // Test holes in arrays.
129 var fast_smi = [1, 2, 3, 4];
130 fast_smi.__proto__ = [7, 7, 7, 7];
132 assertTrue(%HasFastSmiElements(fast_smi));
133 TestStringify("[1,2,7,4]", fast_smi);
135 var fast_double = [1.1, 2, 3, 4];
136 fast_double.__proto__ = [7, 7, 7, 7];
138 delete fast_double[2];
139 assertTrue(%HasFastDoubleElements(fast_double));
140 TestStringify("[1.1,2,7,4]", fast_double);
142 var fast_obj = [1, 2, {}, {}];
143 fast_obj.__proto__ = [7, 7, 7, 7];
146 assertTrue(%HasFastObjectElements(fast_obj));
147 TestStringify("[1,2,7,{}]", fast_obj);
149 var getter_side_effect = { a: 1,
158 assertEquals('{"a":1,"b":2,"d":4}', JSON.stringify(getter_side_effect));
159 assertEquals('{"b":2,"d":4,"e":5}', JSON.stringify(getter_side_effect));
161 getter_side_effect = { a: 1,
170 assertEquals('{"a":1,"b":2,"d":4}',
171 JSON.stringify(getter_side_effect, null, 0));
172 assertEquals('{"b":2,"d":4,"e":5}',
173 JSON.stringify(getter_side_effect, null, 0));
177 Object.defineProperty(non_enum, "b", { value: 2, enumerable: false });
179 TestStringify('{"a":1,"c":3}', non_enum);
181 var str = "external";
183 externalizeString(str, true);
185 TestStringify("\"external\"", str, null, 0);