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comparison: js/src/tests/ecma_5/strict/15.4.5.1.js
js/src/tests/ecma_5/strict/15.4.5.1.js
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| -1:000000000000 | 0:6f45f3d4b122 |
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 | |
| 3 /* | |
| 4 * Any copyright is dedicated to the Public Domain. | |
| 5 * http://creativecommons.org/licenses/publicdomain/ | |
| 6 */ | |
| 7 | |
| 8 var out = {}; | |
| 9 | |
| 10 function arr() { | |
| 11 return Object.defineProperty([1, 2, 3, 4], 2, {configurable: false}); | |
| 12 } | |
| 13 | |
| 14 function nonStrict1(out) | |
| 15 { | |
| 16 var a = out.array = arr(); | |
| 17 a.length = 2; | |
| 18 } | |
| 19 | |
| 20 function strict1(out) | |
| 21 { | |
| 22 "use strict"; | |
| 23 var a = out.array = arr(); | |
| 24 a.length = 2; | |
| 25 return a; | |
| 26 } | |
| 27 | |
| 28 out.array = null; | |
| 29 nonStrict1(out); | |
| 30 assertEq(deepEqual(out.array, [1, 2, 3]), true); | |
| 31 | |
| 32 out.array = null; | |
| 33 try | |
| 34 { | |
| 35 strict1(out); | |
| 36 throw "no error"; | |
| 37 } | |
| 38 catch (e) | |
| 39 { | |
| 40 assertEq(e instanceof TypeError, true, "expected TypeError, got " + e); | |
| 41 } | |
| 42 assertEq(deepEqual(out.array, [1, 2, 3]), true); | |
| 43 | |
| 44 // Internally, SpiderMonkey has two representations for arrays: | |
| 45 // fast-but-inflexible, and slow-but-flexible. Adding a non-index property | |
| 46 // to an array turns it into the latter. We should test on both kinds. | |
| 47 function addx(obj) { | |
| 48 obj.x = 5; | |
| 49 return obj; | |
| 50 } | |
| 51 | |
| 52 function nonStrict2(out) | |
| 53 { | |
| 54 var a = out.array = addx(arr()); | |
| 55 a.length = 2; | |
| 56 } | |
| 57 | |
| 58 function strict2(out) | |
| 59 { | |
| 60 "use strict"; | |
| 61 var a = out.array = addx(arr()); | |
| 62 a.length = 2; | |
| 63 } | |
| 64 | |
| 65 out.array = null; | |
| 66 nonStrict2(out); | |
| 67 assertEq(deepEqual(out.array, addx([1, 2, 3])), true); | |
| 68 | |
| 69 out.array = null; | |
| 70 try | |
| 71 { | |
| 72 strict2(out); | |
| 73 throw "no error"; | |
| 74 } | |
| 75 catch (e) | |
| 76 { | |
| 77 assertEq(e instanceof TypeError, true, "expected TypeError, got " + e); | |
| 78 } | |
| 79 assertEq(deepEqual(out.array, addx([1, 2, 3])), true); | |
| 80 | |
| 81 if (typeof reportCompare === "function") | |
| 82 reportCompare(true, true); | |
| 83 | |
| 84 print("Tests complete"); |
