Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 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 | |
| 24 | description( |
| 25 | "This page tests that a RegExp object's lastIndex behaves like a regular property." |
| 26 | ); |
| 27 | |
| 28 | // lastIndex is not configurable |
| 29 | shouldBeFalse("delete /x/.lastIndex"); |
| 30 | shouldThrow("'use strict'; delete /x/.lastIndex"); |
| 31 | |
| 32 | // lastIndex is not enumerable |
| 33 | shouldBeTrue("'lastIndex' in /x/"); |
| 34 | shouldBeTrue("for (property in /x/) if (property === 'lastIndex') throw false; true"); |
| 35 | |
| 36 | // lastIndex is writable |
| 37 | shouldBeTrue("var re = /x/; re.lastIndex = re; re.lastIndex === re"); |
| 38 | |
| 39 | // Cannot redefine lastIndex as an accessor |
| 40 | shouldThrow("Object.defineProperty(/x/, {get:function(){}})"); |
| 41 | |
| 42 | // Cannot redefine lastIndex as enumerable |
| 43 | shouldThrow("Object.defineProperty(/x/, 'lastIndex', {enumerable:true}); true"); |
| 44 | shouldBeTrue("Object.defineProperty(/x/, 'lastIndex', {enumerable:false}); true"); |
| 45 | |
| 46 | // Cannot redefine lastIndex as configurable |
| 47 | shouldThrow("Object.defineProperty(/x/, 'lastIndex', {configurable:true}); true"); |
| 48 | shouldBeTrue("Object.defineProperty(/x/, 'lastIndex', {configurable:false}); true"); |
| 49 | |
| 50 | // Can redefine lastIndex as read-only |
| 51 | shouldBe("var re = Object.defineProperty(/x/, 'lastIndex', {writable:true}); re.lastIndex = 42; re.lastIndex", '42'); |
| 52 | shouldBe("var re = Object.defineProperty(/x/, 'lastIndex', {writable:false}); re.lastIndex = 42; re.lastIndex", '0'); |
| 53 | |
| 54 | // Can redefine the value |
| 55 | shouldBe("var re = Object.defineProperty(/x/, 'lastIndex', {value:42}); re.lastIndex", '42'); |
| 56 | |
| 57 | // Cannot redefine read-only lastIndex as writable |
| 58 | shouldThrow("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 |
| 61 | shouldThrow("Object.defineProperty(Object.defineProperty(/x/, 'lastIndex', {writable:false}), 'lastIndex', {value:42}); true"); |
| 62 | shouldBeTrue("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 |
| 65 | shouldBe("Object.defineProperty(/x/, 'lastIndex', {writable:false}).exec('')", 'null'); |
| 66 | shouldBe("Object.defineProperty(/x/, 'lastIndex', {writable:false}).exec('x')", '["x"]'); |
| 67 | shouldThrow("Object.defineProperty(/x/g, 'lastIndex', {writable:false}).exec('')"); |
| 68 | shouldThrow("Object.defineProperty(/x/g, 'lastIndex', {writable:false}).exec('x')"); |
| 69 | |
| 70 | // Should be able to freeze a regular expression object. |
| 71 | shouldBeTrue("var re = /x/; Object.freeze(re); Object.isFrozen(re);"); |