1 // Copyright 2009 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 // Date toJSON 29 assertEquals("1970-01-01T00:00:00.000Z", new Date(0).toJSON()); 30 assertEquals("1979-01-11T08:00:00.000Z", new Date("1979-01-11 08:00 GMT").toJSON()); 31 assertEquals("2005-05-05T05:05:05.000Z", new Date("2005-05-05 05:05:05 GMT").toJSON()); 32 var n1 = new Date(10000); 33 n1.toISOString = function () { return "foo"; }; 34 assertEquals("foo", n1.toJSON()); 35 var n2 = new Date(10001); 36 n2.toISOString = null; 37 assertThrows(function () { n2.toJSON(); }, TypeError); 38 var n4 = new Date(10003); 39 n4.toISOString = function () { 40 assertEquals(0, arguments.length); 41 assertEquals(this, n4); 42 return null; 43 }; 44 assertEquals(null, n4.toJSON()); 45 46 assertTrue(Object.prototype === JSON.__proto__); 47 assertEquals("[object JSON]", Object.prototype.toString.call(JSON)); 48 49 //Test Date.prototype.toJSON as generic function. 50 var d1 = {toJSON: Date.prototype.toJSON, 51 toISOString: function() { return 42; }}; 52 assertEquals(42, d1.toJSON()); 53 54 var d2 = {toJSON: Date.prototype.toJSON, 55 valueOf: function() { return Infinity; }, 56 toISOString: function() { return 42; }}; 57 assertEquals(null, d2.toJSON()); 58 59 var d3 = {toJSON: Date.prototype.toJSON, 60 valueOf: "not callable", 61 toString: function() { return Infinity; }, 62 toISOString: function() { return 42; }}; 63 64 assertEquals(null, d3.toJSON()); 65 66 var d4 = {toJSON: Date.prototype.toJSON, 67 valueOf: "not callable", 68 toString: "not callable either", 69 toISOString: function() { return 42; }}; 70 assertThrows("d4.toJSON()", TypeError); // ToPrimitive throws. 71 72 var d5 = {toJSON: Date.prototype.toJSON, 73 valueOf: "not callable", 74 toString: function() { return "Infinity"; }, 75 toISOString: function() { return 42; }}; 76 assertEquals(42, d5.toJSON()); 77 78 var d6 = {toJSON: Date.prototype.toJSON, 79 toISOString: function() { return ["not primitive"]; }}; 80 assertEquals(["not primitive"], d6.toJSON()); 81 82 var d7 = {toJSON: Date.prototype.toJSON, 83 ISOString: "not callable"}; 84 assertThrows("d7.toJSON()", TypeError); 85 86 // DontEnum 87 for (var p in this) { 88 assertFalse(p == "JSON"); 89 } 90 91 // Parse 92 assertEquals({}, JSON.parse("{}")); 93 assertEquals({42:37}, JSON.parse('{"42":37}')); 94 assertEquals(null, JSON.parse("null")); 95 assertEquals(true, JSON.parse("true")); 96 assertEquals(false, JSON.parse("false")); 97 assertEquals("foo", JSON.parse('"foo"')); 98 assertEquals("f\no", JSON.parse('"f\\no"')); 99 assertEquals("\b\f\n\r\t\"\u2028\/\\", 100 JSON.parse('"\\b\\f\\n\\r\\t\\"\\u2028\\/\\\\"')); 101 assertEquals([1.1], JSON.parse("[1.1]")); 102 assertEquals([1], JSON.parse("[1.0]")); 103 104 assertEquals(0, JSON.parse("0")); 105 assertEquals(1, JSON.parse("1")); 106 assertEquals(0.1, JSON.parse("0.1")); 107 assertEquals(1.1, JSON.parse("1.1")); 108 assertEquals(1.1, JSON.parse("1.100000")); 109 assertEquals(1.111111, JSON.parse("1.111111")); 110 assertEquals(-0, JSON.parse("-0")); 111 assertEquals(-1, JSON.parse("-1")); 112 assertEquals(-0.1, JSON.parse("-0.1")); 113 assertEquals(-1.1, JSON.parse("-1.1")); 114 assertEquals(-1.1, JSON.parse("-1.100000")); 115 assertEquals(-1.111111, JSON.parse("-1.111111")); 116 assertEquals(11, JSON.parse("1.1e1")); 117 assertEquals(11, JSON.parse("1.1e+1")); 118 assertEquals(0.11, JSON.parse("1.1e-1")); 119 assertEquals(11, JSON.parse("1.1E1")); 120 assertEquals(11, JSON.parse("1.1E+1")); 121 assertEquals(0.11, JSON.parse("1.1E-1")); 122 123 assertEquals([], JSON.parse("[]")); 124 assertEquals([1], JSON.parse("[1]")); 125 assertEquals([1, "2", true, null], JSON.parse('[1, "2", true, null]')); 126 127 assertEquals("", JSON.parse('""')); 128 assertEquals(["", "", -0, ""], JSON.parse('[ "" , "" , -0, ""]')); 129 assertEquals("", JSON.parse('""')); 130 131 132 function GetFilter(name) { 133 function Filter(key, value) { 134 return (key == name) ? undefined : value; 135 } 136 return Filter; 137 } 138 139 var pointJson = '{"x": 1, "y": 2}'; 140 assertEquals({'x': 1, 'y': 2}, JSON.parse(pointJson)); 141 assertEquals({'x': 1}, JSON.parse(pointJson, GetFilter('y'))); 142 assertEquals({'y': 2}, JSON.parse(pointJson, GetFilter('x'))); 143 assertEquals([1, 2, 3], JSON.parse("[1, 2, 3]")); 144 assertEquals([1, undefined, 3], JSON.parse("[1, 2, 3]", GetFilter(1))); 145 assertEquals([1, 2, undefined], JSON.parse("[1, 2, 3]", GetFilter(2))); 146 147 function DoubleNumbers(key, value) { 148 return (typeof value == 'number') ? 2 * value : value; 149 } 150 151 var deepObject = '{"a": {"b": 1, "c": 2}, "d": {"e": {"f": 3}}}'; 152 assertEquals({"a": {"b": 1, "c": 2}, "d": {"e": {"f": 3}}}, 153 JSON.parse(deepObject)); 154 assertEquals({"a": {"b": 2, "c": 4}, "d": {"e": {"f": 6}}}, 155 JSON.parse(deepObject, DoubleNumbers)); 156 157 function TestInvalid(str) { 158 assertThrows(function () { JSON.parse(str); }, SyntaxError); 159 } 160 161 TestInvalid('abcdef'); 162 TestInvalid('isNaN()'); 163 TestInvalid('{"x": [1, 2, deepObject]}'); 164 TestInvalid('[1, [2, [deepObject], 3], 4]'); 165 TestInvalid('function () { return 0; }'); 166 167 TestInvalid("[1, 2"); 168 TestInvalid('{"x": 3'); 169 170 // JavaScript number literals not valid in JSON. 171 TestInvalid('[01]'); 172 TestInvalid('[.1]'); 173 TestInvalid('[1.]'); 174 TestInvalid('[1.e1]'); 175 TestInvalid('[-.1]'); 176 TestInvalid('[-1.]'); 177 178 // Plain invalid number literals. 179 TestInvalid('-'); 180 TestInvalid('--1'); 181 TestInvalid('-1e'); 182 TestInvalid('1e--1]'); 183 TestInvalid('1e+-1'); 184 TestInvalid('1e-+1'); 185 TestInvalid('1e++1'); 186 187 // JavaScript string literals not valid in JSON. 188 TestInvalid("'single quote'"); // Valid JavaScript 189 TestInvalid('"\\a invalid escape"'); 190 TestInvalid('"\\v invalid escape"'); // Valid JavaScript 191 TestInvalid('"\\\' invalid escape"'); // Valid JavaScript 192 TestInvalid('"\\x42 invalid escape"'); // Valid JavaScript 193 TestInvalid('"\\u202 invalid escape"'); 194 TestInvalid('"\\012 invalid escape"'); 195 TestInvalid('"Unterminated string'); 196 TestInvalid('"Unterminated string\\"'); 197 TestInvalid('"Unterminated string\\\\\\"'); 198 199 // Test bad JSON that would be good JavaScript (ES5). 200 TestInvalid("{true:42}"); 201 TestInvalid("{false:42}"); 202 TestInvalid("{null:42}"); 203 TestInvalid("{'foo':42}"); 204 TestInvalid("{42:42}"); 205 TestInvalid("{0:42}"); 206 TestInvalid("{-1:42}"); 207 208 // Test for trailing garbage detection. 209 TestInvalid('42 px'); 210 TestInvalid('42 .2'); 211 TestInvalid('42 2'); 212 TestInvalid('42 e1'); 213 TestInvalid('"42" ""'); 214 TestInvalid('"42" ""'); 215 TestInvalid('"" ""'); 216 TestInvalid('true ""'); 217 TestInvalid('false ""'); 218 TestInvalid('null ""'); 219 TestInvalid('null ""'); 220 TestInvalid('[] ""'); 221 TestInvalid('[true] ""'); 222 TestInvalid('{} ""'); 223 TestInvalid('{"x":true} ""'); 224 TestInvalid('"Garbage""After string"'); 225 226 // Stringify 227 228 function TestStringify(expected, input) { 229 assertEquals(expected, JSON.stringify(input)); 230 assertEquals(expected, JSON.stringify(input, null, 0)); 231 } 232 233 TestStringify("true", true); 234 TestStringify("false", false); 235 TestStringify("null", null); 236 TestStringify("false", {toJSON: function () { return false; }}); 237 TestStringify("4", 4); 238 TestStringify('"foo"', "foo"); 239 TestStringify("null", Infinity); 240 TestStringify("null", -Infinity); 241 TestStringify("null", NaN); 242 TestStringify("4", new Number(4)); 243 TestStringify('"bar"', new String("bar")); 244 245 TestStringify('"foo\\u0000bar"', "foo\0bar"); 246 TestStringify('"f\\"o\'o\\\\b\\ba\\fr\\nb\\ra\\tz"', 247 "f\"o\'o\\b\ba\fr\nb\ra\tz"); 248 249 TestStringify("[1,2,3]", [1, 2, 3]); 250 assertEquals("[\n 1,\n 2,\n 3\n]", JSON.stringify([1, 2, 3], null, 1)); 251 assertEquals("[\n 1,\n 2,\n 3\n]", JSON.stringify([1, 2, 3], null, 2)); 252 assertEquals("[\n 1,\n 2,\n 3\n]", 253 JSON.stringify([1, 2, 3], null, new Number(2))); 254 assertEquals("[\n^1,\n^2,\n^3\n]", JSON.stringify([1, 2, 3], null, "^")); 255 assertEquals("[\n^1,\n^2,\n^3\n]", 256 JSON.stringify([1, 2, 3], null, new String("^"))); 257 assertEquals("[\n 1,\n 2,\n [\n 3,\n [\n 4\n ],\n 5\n ],\n 6,\n 7\n]", 258 JSON.stringify([1, 2, [3, [4], 5], 6, 7], null, 1)); 259 assertEquals("[]", JSON.stringify([], null, 1)); 260 assertEquals("[1,2,[3,[4],5],6,7]", 261 JSON.stringify([1, 2, [3, [4], 5], 6, 7], null)); 262 assertEquals("[2,4,[6,[8],10],12,14]", 263 JSON.stringify([1, 2, [3, [4], 5], 6, 7], DoubleNumbers)); 264 TestStringify('["a","ab","abc"]', ["a","ab","abc"]); 265 TestStringify('{"a":1,"c":true}', { a : 1, 266 b : function() { 1 }, 267 c : true, 268 d : function() { 2 } }); 269 TestStringify('[1,null,true,null]', 270 [1, function() { 1 }, true, function() { 2 }]); 271 TestStringify('"toJSON 123"', 272 { toJSON : function() { return 'toJSON 123'; } }); 273 TestStringify('{"a":321}', 274 { a : { toJSON : function() { return 321; } } }); 275 var counter = 0; 276 assertEquals('{"getter":123}', 277 JSON.stringify({ get getter() { counter++; return 123; } })); 278 assertEquals(1, counter); 279 assertEquals('{"getter":123}', 280 JSON.stringify({ get getter() { counter++; return 123; } }, 281 null, 282 0)); 283 assertEquals(2, counter); 284 285 TestStringify('{"a":"abc","b":"\u1234bc"}', 286 { a : "abc", b : "\u1234bc" }); 287 288 289 var a = { a : 1, b : 2 }; 290 delete a.a; 291 TestStringify('{"b":2}', a); 292 293 var b = {}; 294 b.__proto__ = { toJSON : function() { return 321;} }; 295 TestStringify("321", b); 296 297 var array = [""]; 298 var expected = '""'; 299 for (var i = 0; i < 10000; i++) { 300 array.push(""); 301 expected = '"",' + expected; 302 } 303 expected = '[' + expected + ']'; 304 TestStringify(expected, array); 305 306 307 var circular = [1, 2, 3]; 308 circular[2] = circular; 309 assertThrows(function () { JSON.stringify(circular); }, TypeError); 310 assertThrows(function () { JSON.stringify(circular, null, 0); }, TypeError); 311 312 var singleton = []; 313 var multiOccurrence = [singleton, singleton, singleton]; 314 TestStringify("[[],[],[]]", multiOccurrence); 315 316 TestStringify('{"x":5,"y":6}', {x:5,y:6}); 317 assertEquals('{"x":5}', JSON.stringify({x:5,y:6}, ['x'])); 318 assertEquals('{\n "a": "b",\n "c": "d"\n}', 319 JSON.stringify({a:"b",c:"d"}, null, 1)); 320 assertEquals('{"y":6,"x":5}', JSON.stringify({x:5,y:6}, ['y', 'x'])); 321 322 // toJSON get string keys. 323 var checker = {}; 324 var array = [checker]; 325 checker.toJSON = function(key) { return 1 + key; }; 326 TestStringify('["10"]', array); 327 328 // The gap is capped at ten characters if specified as string. 329 assertEquals('{\n "a": "b",\n "c": "d"\n}', 330 JSON.stringify({a:"b",c:"d"}, null, 331 " /*characters after 10th*/")); 332 333 //The gap is capped at ten characters if specified as number. 334 assertEquals('{\n "a": "b",\n "c": "d"\n}', 335 JSON.stringify({a:"b",c:"d"}, null, 15)); 336 337 // Replaced wrapped primitives are unwrapped. 338 function newx(k, v) { return (k == "x") ? new v(42) : v; } 339 assertEquals('{"x":"42"}', JSON.stringify({x: String}, newx)); 340 assertEquals('{"x":42}', JSON.stringify({x: Number}, newx)); 341 assertEquals('{"x":true}', JSON.stringify({x: Boolean}, newx)); 342 343 TestStringify(undefined, undefined); 344 TestStringify(undefined, function () { }); 345 // Arrays with missing, undefined or function elements have those elements 346 // replaced by null. 347 TestStringify("[null,null,null]", [undefined,,function(){}]); 348 349 // Objects with undefined or function properties (including replaced properties) 350 // have those properties ignored. 351 assertEquals('{}', 352 JSON.stringify({a: undefined, b: function(){}, c: 42, d: 42}, 353 function(k, v) { if (k == "c") return undefined; 354 if (k == "d") return function(){}; 355 return v; })); 356 357 TestInvalid('1); throw "foo"; (1'); 358 359 var x = 0; 360 eval("(1); x++; (1)"); 361 TestInvalid('1); x++; (1'); 362 363 // Test string conversion of argument. 364 var o = { toString: function() { return "42"; } }; 365 assertEquals(42, JSON.parse(o)); 366 367 368 for (var i = 0; i < 65536; i++) { 369 var string = String.fromCharCode(i); 370 var encoded = JSON.stringify(string); 371 var expected = "uninitialized"; 372 // Following the ES5 specification of the abstraction function Quote. 373 if (string == '"' || string == '\\') { 374 // Step 2.a 375 expected = '\\' + string; 376 } else if ("\b\t\n\r\f".indexOf(string) >= 0) { 377 // Step 2.b 378 if (string == '\b') expected = '\\b'; 379 else if (string == '\t') expected = '\\t'; 380 else if (string == '\n') expected = '\\n'; 381 else if (string == '\f') expected = '\\f'; 382 else if (string == '\r') expected = '\\r'; 383 } else if (i < 32) { 384 // Step 2.c 385 if (i < 16) { 386 expected = "\\u000" + i.toString(16); 387 } else { 388 expected = "\\u00" + i.toString(16); 389 } 390 } else { 391 expected = string; 392 } 393 assertEquals('"' + expected + '"', encoded, "Codepoint " + i); 394 } 395 396 397 // Ensure that wrappers and callables are handled correctly. 398 var num37 = new Number(42); 399 num37.valueOf = function() { return 37; }; 400 401 var numFoo = new Number(42); 402 numFoo.valueOf = "not callable"; 403 numFoo.toString = function() { return "foo"; }; 404 405 var numTrue = new Number(42); 406 numTrue.valueOf = function() { return true; } 407 408 var strFoo = new String("bar"); 409 strFoo.toString = function() { return "foo"; }; 410 411 var str37 = new String("bar"); 412 str37.toString = "not callable"; 413 str37.valueOf = function() { return 37; }; 414 415 var strTrue = new String("bar"); 416 strTrue.toString = function() { return true; } 417 418 var func = function() { /* Is callable */ }; 419 420 var funcJSON = function() { /* Is callable */ }; 421 funcJSON.toJSON = function() { return "has toJSON"; }; 422 423 var re = /Is callable/; 424 425 var reJSON = /Is callable/; 426 reJSON.toJSON = function() { return "has toJSON"; }; 427 428 TestStringify('[37,null,1,"foo","37","true",null,"has toJSON",{},"has toJSON"]', 429 [num37, numFoo, numTrue, 430 strFoo, str37, strTrue, 431 func, funcJSON, re, reJSON]); 432 433 434 var oddball = Object(42); 435 oddball.__proto__ = { __proto__: null, toString: function() { return true; } }; 436 TestStringify('1', oddball); 437 438 var getCount = 0; 439 var callCount = 0; 440 var counter = { get toJSON() { getCount++; 441 return function() { callCount++; 442 return 42; }; } }; 443 444 // RegExps are not callable, so they are stringified as objects. 445 TestStringify('{}', /regexp/); 446 TestStringify('42', counter); 447 assertEquals(2, getCount); 448 assertEquals(2, callCount); 449 450 var oddball2 = Object(42); 451 var oddball3 = Object("foo"); 452 oddball3.__proto__ = { __proto__: null, 453 toString: "not callable", 454 valueOf: function() { return true; } }; 455 oddball2.__proto__ = { __proto__: null, 456 toJSON: function () { return oddball3; } } 457 TestStringify('"true"', oddball2); 458 459 460 var falseNum = Object("37"); 461 falseNum.__proto__ = Number.prototype; 462 falseNum.toString = function() { return 42; }; 463 TestStringify('"42"', falseNum); 464 465 // Parse an object value as __proto__. 466 var o1 = JSON.parse('{"__proto__":[]}'); 467 assertEquals([], o1.__proto__); 468 assertEquals(["__proto__"], Object.keys(o1)); 469 assertEquals([], Object.getOwnPropertyDescriptor(o1, "__proto__").value); 470 assertEquals(["__proto__"], Object.getOwnPropertyNames(o1)); 471 assertTrue(o1.hasOwnProperty("__proto__")); 472 assertTrue(Object.prototype.isPrototypeOf(o1)); 473 474 // Parse a non-object value as __proto__. 475 var o2 = JSON.parse('{"__proto__":5}'); 476 assertEquals(5, o2.__proto__); 477 assertEquals(["__proto__"], Object.keys(o2)); 478 assertEquals(5, Object.getOwnPropertyDescriptor(o2, "__proto__").value); 479 assertEquals(["__proto__"], Object.getOwnPropertyNames(o2)); 480 assertTrue(o2.hasOwnProperty("__proto__")); 481 assertTrue(Object.prototype.isPrototypeOf(o2)); 482 483 var json = '{"stuff before slash\\\\stuff after slash":"whatever"}'; 484 TestStringify(json, JSON.parse(json)); 485
