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);"); 72
