13bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// Copyright 2010 the V8 project authors. All rights reserved. 23bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// Redistribution and use in source and binary forms, with or without 33bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// modification, are permitted provided that the following conditions are 43bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// met: 53bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// 63bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// * Redistributions of source code must retain the above copyright 73bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// notice, this list of conditions and the following disclaimer. 83bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// * Redistributions in binary form must reproduce the above 93bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// copyright notice, this list of conditions and the following 103bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// disclaimer in the documentation and/or other materials provided 113bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// with the distribution. 123bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// * Neither the name of Google Inc. nor the names of its 133bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// contributors may be used to endorse or promote products derived 143bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// from this software without specific prior written permission. 153bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// 163bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 173bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 183bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 193bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 203bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 213bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 223bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 233bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 243bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 253bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 263bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 273bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 283bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// Tests the Object.seal and Object.isSealed methods - ES 15.2.3.9 and 293bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// ES 15.2.3.12 303bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 313bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 323bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// Test that we throw an error if an object is not passed as argument. 333bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochvar non_objects = new Array(undefined, null, 1, -1, 0, 42.43); 343bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochfor (var key in non_objects) { 353fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch var exception = false; 363bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch try { 373bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch Object.seal(non_objects[key]); 383bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch } catch(e) { 393fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch exception = true; 403bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch assertTrue(/Object.seal called on non-object/.test(e)); 413bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch } 423fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch assertTrue(exception); 433bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch} 443bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 453bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochfor (var key in non_objects) { 463fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch exception = false; 473bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch try { 483bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch Object.isSealed(non_objects[key]); 493bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch } catch(e) { 503fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch exception = true; 513bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch assertTrue(/Object.isSealed called on non-object/.test(e)); 523bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch } 533fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch assertTrue(exception); 543bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch} 553bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 563bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// Test normal data properties. 573bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochvar obj = { x: 42, z: 'foobar' }; 583bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochvar desc = Object.getOwnPropertyDescriptor(obj, 'x'); 593bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(desc.writable); 603bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(desc.configurable); 613bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertEquals(42, desc.value); 623bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 633bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochdesc = Object.getOwnPropertyDescriptor(obj, 'z'); 643bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(desc.writable); 653bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(desc.configurable); 663bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertEquals('foobar', desc.value); 673bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 683bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(Object.isExtensible(obj)); 693bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertFalse(Object.isSealed(obj)); 703bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 713bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochObject.seal(obj); 723bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 733bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// Make sure we are no longer extensible. 743bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertFalse(Object.isExtensible(obj)); 753bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(Object.isSealed(obj)); 763bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 773bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// We should not be frozen, since we are still able to 783bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// update values. 793bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertFalse(Object.isFrozen(obj)); 803bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 813bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// We should not allow new properties to be added. 8244f0eee88ff00398ff7f715fab053374d808c90dSteve Blockobj.foo = 42; 8344f0eee88ff00398ff7f715fab053374d808c90dSteve BlockassertEquals(obj.foo, undefined); 843bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 853bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochdesc = Object.getOwnPropertyDescriptor(obj, 'x'); 863bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(desc.writable); 873bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertFalse(desc.configurable); 883bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertEquals(42, desc.value); 893bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 903bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochdesc = Object.getOwnPropertyDescriptor(obj, 'z'); 913bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(desc.writable); 923bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertFalse(desc.configurable); 933bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertEquals("foobar", desc.value); 943bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 953bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// Since writable is not affected by seal we should still be able to 963bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// update the values. 973bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochobj.x = "43"; 98257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochassertEquals("43", obj.x); 993bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1003bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// Test on accessors. 1013bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochvar obj2 = {}; 1023bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochfunction get() { return 43; }; 1033bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochfunction set() {}; 1043bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochObject.defineProperty(obj2, 'x', { get: get, set: set, configurable: true }); 1053bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1063bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochdesc = Object.getOwnPropertyDescriptor(obj2, 'x'); 1073bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(desc.configurable); 1083bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertEquals(undefined, desc.value); 1093bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertEquals(set, desc.set); 1103bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertEquals(get, desc.get); 1113bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1123bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(Object.isExtensible(obj2)); 1133bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertFalse(Object.isSealed(obj2)); 1143bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochObject.seal(obj2); 1153bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1163bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// Since this is an accessor property the object is now effectively both 1173bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// sealed and frozen (accessors has no writable attribute). 1183bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(Object.isFrozen(obj2)); 1193bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertFalse(Object.isExtensible(obj2)); 1203bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(Object.isSealed(obj2)); 1213bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1223bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochdesc = Object.getOwnPropertyDescriptor(obj2, 'x'); 1233bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertFalse(desc.configurable); 1243bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertEquals(undefined, desc.value); 1253bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertEquals(set, desc.set); 1263bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertEquals(get, desc.get); 1273bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 12844f0eee88ff00398ff7f715fab053374d808c90dSteve Blockobj2.foo = 42; 12944f0eee88ff00398ff7f715fab053374d808c90dSteve BlockassertEquals(obj2.foo, undefined); 1303bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1313bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// Test seal on arrays. 1323bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochvar arr = new Array(42,43); 1333bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1343bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochdesc = Object.getOwnPropertyDescriptor(arr, '0'); 1353bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(desc.configurable); 1363bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(desc.writable); 1373bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertEquals(42, desc.value); 1383bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1393bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochdesc = Object.getOwnPropertyDescriptor(arr, '1'); 1403bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(desc.configurable); 1413bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(desc.writable); 1423bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertEquals(43, desc.value); 1433bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1443bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(Object.isExtensible(arr)); 1453bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertFalse(Object.isSealed(arr)); 1463bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochObject.seal(arr); 1473bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(Object.isSealed(arr)); 1483bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertFalse(Object.isExtensible(arr)); 149257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch// Since the values in the array is still writable this object 1503bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// is not frozen. 1513bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertFalse(Object.isFrozen(arr)); 1523bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1533bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochdesc = Object.getOwnPropertyDescriptor(arr, '0'); 1543bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertFalse(desc.configurable); 1553bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(desc.writable); 1563bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertEquals(42, desc.value); 1573bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1583bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochdesc = Object.getOwnPropertyDescriptor(arr, '1'); 1593bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertFalse(desc.configurable); 1603bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(desc.writable); 1613bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertEquals(43, desc.value); 1623bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1633bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdocharr[0] = 'foo'; 1643bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1653bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// We should be able to overwrite the existing value. 1663bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertEquals('foo', arr[0]); 1673bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1683bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1693bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// Test that isSealed returns the correct value even if configurable 1703bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// has been set to false on all properties manually and the extensible 1713bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// flag has also been set to false manually. 1723bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochvar obj3 = { x: 42, y: 'foo' }; 1733bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1743bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertFalse(Object.isFrozen(obj3)); 1753bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1763bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochObject.defineProperty(obj3, 'x', {configurable: false, writable: true}); 1773bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochObject.defineProperty(obj3, 'y', {configurable: false, writable: false}); 1783bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochObject.preventExtensions(obj3); 1793bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1803bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertTrue(Object.isSealed(obj3)); 1813bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1823bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1833bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// Make sure that an object that has a configurable property 1843bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch// is not classified as sealed. 1853bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdochvar obj4 = {}; 1863bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochObject.defineProperty(obj4, 'x', {configurable: true, writable: false}); 1873bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochObject.defineProperty(obj4, 'y', {configurable: false, writable: false}); 1883bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochObject.preventExtensions(obj4); 1893bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben Murdoch 1903bec4d28b1f388dbc06a9c4276e1a03e86c52b04Ben MurdochassertFalse(Object.isSealed(obj4)); 191bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch 192bb769b257e753aafcbd96767abb2abc645eaa20cBen Murdoch// Make sure that Object.seal returns the sealed object. 193257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdochvar obj4 = {}; 194257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochassertTrue(obj4 === Object.seal(obj4)); 195