Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 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 |
| 4 | // met: |
| 5 | // |
| 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. |
| 15 | // |
| 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. |
| 27 | |
| 28 | // Flags: --allow-natives-syntax --expose-externalize-string |
| 29 | |
| 30 | // Test JSON.stringify on the global object. |
| 31 | var a = 12345; |
| 32 | assertTrue(JSON.stringify(this).indexOf('"a":12345') > 0); |
| 33 | assertTrue(JSON.stringify(this, null, 0).indexOf('"a":12345') > 0); |
| 34 | |
| 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)); |
| 39 | } |
| 40 | |
| 41 | var array_1 = []; |
| 42 | var array_2 = []; |
| 43 | array_1[1<<17] = 1; |
| 44 | array_2[1<<17] = function() { return 1; }; |
| 45 | var nulls = "null,"; |
| 46 | for (var i = 0; i < 17; i++) { |
| 47 | nulls += nulls; |
| 48 | } |
| 49 | |
| 50 | expected_1 = '[' + nulls + '1]'; |
| 51 | expected_2 = '[' + nulls + 'null]'; |
| 52 | TestStringify(expected_1, array_1); |
| 53 | TestStringify(expected_2, array_2); |
| 54 | |
| 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); |
| 60 | |
| 61 | var str_wrapper = Object('2'); |
| 62 | str_wrapper.__proto__ = { __proto__: null, |
| 63 | toString: function() { return true; } }; |
| 64 | TestStringify('"true"', str_wrapper); |
| 65 | |
| 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); |
| 71 | |
| 72 | // Test getters. |
| 73 | var counter = 0; |
| 74 | var getter_obj = { get getter() { |
| 75 | counter++; |
| 76 | return 123; |
| 77 | } }; |
| 78 | TestStringify('{"getter":123}', getter_obj); |
| 79 | assertEquals(2, counter); |
| 80 | |
| 81 | // Test toJSON function. |
| 82 | var tojson_obj = { toJSON: function() { |
| 83 | counter++; |
| 84 | return [1, 2]; |
| 85 | }, |
| 86 | a: 1}; |
| 87 | TestStringify('[1,2]', tojson_obj); |
| 88 | assertEquals(4, counter); |
| 89 | |
| 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() { |
| 93 | counter++; |
| 94 | return tojson_obj; |
| 95 | } }; |
| 96 | TestStringify('{"a":1}', tojson_proto_obj); |
| 97 | |
| 98 | // Test toJSON produced by a getter. |
| 99 | var tojson_via_getter = { get toJSON() { |
| 100 | return function(x) { |
| 101 | counter++; |
| 102 | return 321; |
| 103 | }; |
| 104 | }, |
| 105 | a: 1 }; |
| 106 | TestStringify('321', tojson_via_getter); |
| 107 | |
| 108 | assertThrows(function() { |
| 109 | JSON.stringify({ get toJSON() { throw "error"; } }); |
| 110 | }); |
| 111 | |
| 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); |
| 118 | |
| 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); }); |
| 123 | |
| 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}); |
| 127 | |
| 128 | // Test holes in arrays. |
| 129 | var fast_smi = [1, 2, 3, 4]; |
| 130 | fast_smi.__proto__ = [7, 7, 7, 7]; |
| 131 | delete fast_smi[2]; |
| 132 | assertTrue(%HasFastSmiElements(fast_smi)); |
| 133 | TestStringify("[1,2,7,4]", fast_smi); |
| 134 | |
| 135 | var fast_double = [1.1, 2, 3, 4]; |
| 136 | fast_double.__proto__ = [7, 7, 7, 7]; |
| 137 | |
| 138 | delete fast_double[2]; |
| 139 | assertTrue(%HasFastDoubleElements(fast_double)); |
| 140 | TestStringify("[1.1,2,7,4]", fast_double); |
| 141 | |
| 142 | var fast_obj = [1, 2, {}, {}]; |
| 143 | fast_obj.__proto__ = [7, 7, 7, 7]; |
| 144 | |
| 145 | delete fast_obj[2]; |
| 146 | assertTrue(%HasFastObjectElements(fast_obj)); |
| 147 | TestStringify("[1,2,7,{}]", fast_obj); |
| 148 | |
| 149 | var getter_side_effect = { a: 1, |
| 150 | get b() { |
| 151 | delete this.a; |
| 152 | delete this.c; |
| 153 | this.e = 5; |
| 154 | return 2; |
| 155 | }, |
| 156 | c: 3, |
| 157 | d: 4 }; |
| 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)); |
| 160 | |
| 161 | getter_side_effect = { a: 1, |
| 162 | get b() { |
| 163 | delete this.a; |
| 164 | delete this.c; |
| 165 | this.e = 5; |
| 166 | return 2; |
| 167 | }, |
| 168 | c: 3, |
| 169 | d: 4 }; |
| 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)); |
| 174 | |
| 175 | var non_enum = {}; |
| 176 | non_enum.a = 1; |
| 177 | Object.defineProperty(non_enum, "b", { value: 2, enumerable: false }); |
| 178 | non_enum.c = 3; |
| 179 | TestStringify('{"a":1,"c":3}', non_enum); |
| 180 | |
| 181 | var str = "external"; |
| 182 | try { |
| 183 | externalizeString(str, true); |
| 184 | } catch (e) { } |
| 185 | TestStringify("\"external\"", str, null, 0); |