1// Copyright 2013 the V8 project authors. All rights reserved. 2// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 3// 4// Redistribution and use in source and binary forms, with or without 5// modification, are permitted provided that the following conditions 6// are met: 7// 1. Redistributions of source code must retain the above copyright 8// notice, this list of conditions and the following disclaimer. 9// 2. Redistributions in binary form must reproduce the above copyright 10// notice, this list of conditions and the following disclaimer in the 11// documentation and/or other materials provided with the distribution. 12// 13// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 24description( 25"This page tests that a RegExp object's lastIndex behaves like a regular property." 26); 27 28// lastIndex is not configurable 29shouldBeFalse("delete /x/.lastIndex"); 30shouldThrow("'use strict'; delete /x/.lastIndex"); 31 32// lastIndex is not enumerable 33shouldBeTrue("'lastIndex' in /x/"); 34shouldBeTrue("for (property in /x/) if (property === 'lastIndex') throw false; true"); 35 36// lastIndex is writable 37shouldBeTrue("var re = /x/; re.lastIndex = re; re.lastIndex === re"); 38 39// Cannot redefine lastIndex as an accessor 40shouldThrow("Object.defineProperty(/x/, {get:function(){}})"); 41 42// Cannot redefine lastIndex as enumerable 43shouldThrow("Object.defineProperty(/x/, 'lastIndex', {enumerable:true}); true"); 44shouldBeTrue("Object.defineProperty(/x/, 'lastIndex', {enumerable:false}); true"); 45 46// Cannot redefine lastIndex as configurable 47shouldThrow("Object.defineProperty(/x/, 'lastIndex', {configurable:true}); true"); 48shouldBeTrue("Object.defineProperty(/x/, 'lastIndex', {configurable:false}); true"); 49 50// Can redefine lastIndex as read-only 51shouldBe("var re = Object.defineProperty(/x/, 'lastIndex', {writable:true}); re.lastIndex = 42; re.lastIndex", '42'); 52shouldBe("var re = Object.defineProperty(/x/, 'lastIndex', {writable:false}); re.lastIndex = 42; re.lastIndex", '0'); 53 54// Can redefine the value 55shouldBe("var re = Object.defineProperty(/x/, 'lastIndex', {value:42}); re.lastIndex", '42'); 56 57// Cannot redefine read-only lastIndex as writable 58shouldThrow("Object.defineProperty(Object.defineProperty(/x/, 'lastIndex', {writable:false}), 'lastIndex', {writable:true}); true"); 59 60// Can only redefine the value of a read-only lastIndex as the current value 61shouldThrow("Object.defineProperty(Object.defineProperty(/x/, 'lastIndex', {writable:false}), 'lastIndex', {value:42}); true"); 62shouldBeTrue("Object.defineProperty(Object.defineProperty(/x/, 'lastIndex', {writable:false}), 'lastIndex', {value:0}); true"); 63 64// Trying to run a global regular expression should throw, if lastIndex is read-only 65shouldBe("Object.defineProperty(/x/, 'lastIndex', {writable:false}).exec('')", 'null'); 66shouldBe("Object.defineProperty(/x/, 'lastIndex', {writable:false}).exec('x')", '["x"]'); 67shouldThrow("Object.defineProperty(/x/g, 'lastIndex', {writable:false}).exec('')"); 68shouldThrow("Object.defineProperty(/x/g, 'lastIndex', {writable:false}).exec('x')"); 69 70// Should be able to freeze a regular expression object. 71shouldBeTrue("var re = /x/; Object.freeze(re); Object.isFrozen(re);"); 72