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comparison: js/src/tests/ecma_5/Array/length-truncate-nonconfigurable-sparse.js
js/src/tests/ecma_5/Array/length-truncate-nonconfigurable-sparse.js
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:b86b9d747f55 |
|---|---|
| 1 /* | |
| 2 * Any copyright is dedicated to the Public Domain. | |
| 3 * http://creativecommons.org/licenses/publicdomain/ | |
| 4 * Contributor: | |
| 5 * Jeff Walden <jwalden+code@mit.edu> | |
| 6 */ | |
| 7 | |
| 8 //----------------------------------------------------------------------------- | |
| 9 var BUGNUMBER = 858381; | |
| 10 var summary = | |
| 11 "Array length redefinition behavior with non-configurable elements"; | |
| 12 | |
| 13 print(BUGNUMBER + ": " + summary); | |
| 14 | |
| 15 /************** | |
| 16 * BEGIN TEST * | |
| 17 **************/ | |
| 18 | |
| 19 function addDataProperty(obj, prop, value, enumerable, configurable, writable) | |
| 20 { | |
| 21 var desc = | |
| 22 { enumerable: enumerable, | |
| 23 configurable: configurable, | |
| 24 writable: writable, | |
| 25 value: value }; | |
| 26 Object.defineProperty(obj, prop, desc); | |
| 27 } | |
| 28 | |
| 29 function nonstrict() | |
| 30 { | |
| 31 var arr = [0, , 2, , , 5]; | |
| 32 | |
| 33 addDataProperty(arr, 31415926, "foo", true, true, true); | |
| 34 addDataProperty(arr, 123456789, "bar", true, true, false); | |
| 35 addDataProperty(arr, 8675309, "qux", false, true, true); | |
| 36 addDataProperty(arr, 1735039, "eit", false, true, false); | |
| 37 addDataProperty(arr, 987654321, "fun", false, true, false); | |
| 38 | |
| 39 // non-array indexes to spice things up | |
| 40 addDataProperty(arr, "foopy", "sdfsd", false, false, false); | |
| 41 addDataProperty(arr, 4294967296, "psych", true, false, false); | |
| 42 addDataProperty(arr, 4294967295, "psych", true, false, false); | |
| 43 | |
| 44 addDataProperty(arr, 27182818, "eep", false, false, false); | |
| 45 | |
| 46 // Truncate...but only as far as possible. | |
| 47 arr.length = 1; | |
| 48 | |
| 49 assertEq(arr.length, 27182819); | |
| 50 | |
| 51 var props = Object.getOwnPropertyNames(arr).sort(); | |
| 52 var expected = | |
| 53 ["0", "2", "5", "1735039", "8675309", "27182818", | |
| 54 "foopy", "4294967296", "4294967295", "length"].sort(); | |
| 55 | |
| 56 assertEq(props.length, expected.length); | |
| 57 for (var i = 0; i < props.length; i++) | |
| 58 assertEq(props[i], expected[i], "unexpected property: " + props[i]); | |
| 59 } | |
| 60 nonstrict(); | |
| 61 | |
| 62 function strict() | |
| 63 { | |
| 64 "use strict"; | |
| 65 | |
| 66 var arr = [0, , 2, , , 5]; | |
| 67 | |
| 68 addDataProperty(arr, 31415926, "foo", true, true, true); | |
| 69 addDataProperty(arr, 123456789, "bar", true, true, false); | |
| 70 addDataProperty(arr, 8675309, "qux", false, true, true); | |
| 71 addDataProperty(arr, 1735039, "eit", false, true, false); | |
| 72 addDataProperty(arr, 987654321, "fun", false, true, false); | |
| 73 | |
| 74 // non-array indexes to spice things up | |
| 75 addDataProperty(arr, "foopy", "sdfsd", false, false, false); | |
| 76 addDataProperty(arr, 4294967296, "psych", true, false, false); | |
| 77 addDataProperty(arr, 4294967295, "psych", true, false, false); | |
| 78 | |
| 79 addDataProperty(arr, 27182818, "eep", false, false, false); | |
| 80 | |
| 81 try | |
| 82 { | |
| 83 arr.length = 1; | |
| 84 throw new Error("didn't throw?!"); | |
| 85 } | |
| 86 catch (e) | |
| 87 { | |
| 88 assertEq(e instanceof TypeError, true, | |
| 89 "non-configurable property should trigger TypeError, got " + e); | |
| 90 } | |
| 91 | |
| 92 assertEq(arr.length, 27182819); | |
| 93 | |
| 94 var props = Object.getOwnPropertyNames(arr).sort(); | |
| 95 var expected = | |
| 96 ["0", "2", "5", "1735039", "8675309", "27182818", | |
| 97 "foopy", "4294967296", "4294967295", "length"].sort(); | |
| 98 | |
| 99 assertEq(props.length, expected.length); | |
| 100 for (var i = 0; i < props.length; i++) | |
| 101 assertEq(props[i], expected[i], "unexpected property: " + props[i]); | |
| 102 } | |
| 103 strict(); | |
| 104 | |
| 105 /******************************************************************************/ | |
| 106 | |
| 107 if (typeof reportCompare === "function") | |
| 108 reportCompare(true, true); | |
| 109 | |
| 110 print("Tests complete"); |
