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comparison: js/src/jit-test/tests/arrays/sort-getter-only.js
js/src/jit-test/tests/arrays/sort-getter-only.js
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:66c2b3a5d934 |
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| 1 // The property assignments in Array.prototype.sort are strict assignments. | |
| 2 | |
| 3 load(libdir + "asserts.js"); | |
| 4 | |
| 5 var a = ["A", , "B", "C", "D"]; | |
| 6 var normalArrayElementDesc = Object.getOwnPropertyDescriptor(a, 0); | |
| 7 var getterDesc = { | |
| 8 configurable: false, | |
| 9 enumerable: true, | |
| 10 get: function () { return "F"; }, | |
| 11 set: undefined | |
| 12 }; | |
| 13 Object.defineProperty(a, 1, getterDesc); | |
| 14 | |
| 15 // a.sort is permitted to try to delete a[1] or to try to assign a[1], but it | |
| 16 // must try one or the other. Either one will fail, throwing a TypeError. | |
| 17 assertThrowsInstanceOf(() => a.sort(), TypeError); | |
| 18 | |
| 19 // a.sort() is not permitted to delete the nonconfigurable property. | |
| 20 assertDeepEq(Object.getOwnPropertyDescriptor(a, 1), getterDesc); | |
| 21 | |
| 22 // The values left in the other elements of a are unspecified; some or all may | |
| 23 // have been deleted. | |
| 24 for (var i = 0; i < a.length; i++) { | |
| 25 if (i !== 1 && a.hasOwnProperty(i)) { | |
| 26 normalArrayElementDesc.value = a[i]; | |
| 27 assertDeepEq(Object.getOwnPropertyDescriptor(a, i), normalArrayElementDesc); | |
| 28 } | |
| 29 } |
