The Tor Browser / file comparison
comparison: js/src/tests/js1_5/Scope/regress-185485.js
js/src/tests/js1_5/Scope/regress-185485.js
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:0e8408d6bec5 |
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 /* | |
| 7 * | |
| 8 * Date: 16 Dec 2002 | |
| 9 * SUMMARY: Testing |with (x) {function f() {}}| when |x.f| already exists | |
| 10 * See http://bugzilla.mozilla.org/show_bug.cgi?id=185485 | |
| 11 * | |
| 12 * The idea is this: if |x| does not already have a property named |f|, | |
| 13 * a |with| statement cannot be used to define one. See, for example, | |
| 14 * | |
| 15 * http://bugzilla.mozilla.org/show_bug.cgi?id=159849#c11 | |
| 16 * http://bugzilla.mozilla.org/show_bug.cgi?id=184107 | |
| 17 * | |
| 18 * | |
| 19 * However, if |x| already has a property |f|, a |with| statement can be | |
| 20 * used to modify the value it contains: | |
| 21 * | |
| 22 * with (x) {f = 1;} | |
| 23 * | |
| 24 * This should work even if we use a |var| statement, like this: | |
| 25 * | |
| 26 * with (x) {var f = 1;} | |
| 27 * | |
| 28 * However, it should NOT work if we use a |function| statement, like this: | |
| 29 * | |
| 30 * with (x) {function f() {}} | |
| 31 * | |
| 32 * Instead, this should newly define a function f in global scope. | |
| 33 * See http://bugzilla.mozilla.org/show_bug.cgi?id=185485 | |
| 34 * | |
| 35 */ | |
| 36 //----------------------------------------------------------------------------- | |
| 37 var UBound = 0; | |
| 38 var BUGNUMBER = 185485; | |
| 39 var summary = 'Testing |with (x) {function f() {}}| when |x.f| already exists'; | |
| 40 var status = ''; | |
| 41 var statusitems = []; | |
| 42 var actual = ''; | |
| 43 var actualvalues = []; | |
| 44 var expect= ''; | |
| 45 var expectedvalues = []; | |
| 46 | |
| 47 var x = { f:0, g:0 }; | |
| 48 | |
| 49 with (x) | |
| 50 { | |
| 51 f = 1; | |
| 52 } | |
| 53 status = inSection(1); | |
| 54 actual = x.f; | |
| 55 expect = 1; | |
| 56 addThis(); | |
| 57 | |
| 58 with (x) | |
| 59 { | |
| 60 var f = 2; | |
| 61 } | |
| 62 status = inSection(2); | |
| 63 actual = x.f; | |
| 64 expect = 2; | |
| 65 addThis(); | |
| 66 | |
| 67 /* | |
| 68 * Use of a function statement under the with-block should not affect | |
| 69 * the local property |f|, but define a function |f| in global scope - | |
| 70 */ | |
| 71 with (x) | |
| 72 { | |
| 73 function f() {} | |
| 74 } | |
| 75 status = inSection(3); | |
| 76 actual = x.f; | |
| 77 expect = 2; | |
| 78 addThis(); | |
| 79 | |
| 80 status = inSection(4); | |
| 81 actual = typeof this.f; | |
| 82 expect = 'function'; | |
| 83 addThis(); | |
| 84 | |
| 85 | |
| 86 /* | |
| 87 * Compare use of function expression instead of function statement. | |
| 88 * Note it is important that |x.g| already exists. Otherwise, this | |
| 89 * would newly define |g| in global scope - | |
| 90 */ | |
| 91 with (x) | |
| 92 { | |
| 93 var g = function() {} | |
| 94 } | |
| 95 status = inSection(5); | |
| 96 actual = x.g.toString(); | |
| 97 expect = (function () {}).toString(); | |
| 98 addThis(); | |
| 99 | |
| 100 | |
| 101 | |
| 102 //----------------------------------------------------------------------------- | |
| 103 test(); | |
| 104 //----------------------------------------------------------------------------- | |
| 105 | |
| 106 | |
| 107 | |
| 108 function addThis() | |
| 109 { | |
| 110 statusitems[UBound] = status; | |
| 111 actualvalues[UBound] = actual; | |
| 112 expectedvalues[UBound] = expect; | |
| 113 UBound++; | |
| 114 } | |
| 115 | |
| 116 | |
| 117 function test() | |
| 118 { | |
| 119 enterFunc('test'); | |
| 120 printBugNumber(BUGNUMBER); | |
| 121 printStatus(summary); | |
| 122 | |
| 123 for (var i=0; i<UBound; i++) | |
| 124 { | |
| 125 reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]); | |
| 126 } | |
| 127 | |
| 128 exitFunc ('test'); | |
| 129 } |
