The Tor Browser / file comparison
comparison: js/src/tests/ecma_5/extensions/proxy-array-target-length-definition.js
js/src/tests/ecma_5/extensions/proxy-array-target-length-definition.js
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| -1:000000000000 | 0:4af210fec865 |
|---|---|
| 1 /* | |
| 2 * Any copyright is dedicated to the Public Domain. | |
| 3 * http://creativecommons.org/licenses/publicdomain/ | |
| 4 */ | |
| 5 | |
| 6 var gTestfile = 'proxy-array-target-length-definition.js'; | |
| 7 var BUGNUMBER = 905947; | |
| 8 var summary = | |
| 9 "Redefining an array's |length| property when redefining the |length| " + | |
| 10 "property on a proxy with an array as target"; | |
| 11 | |
| 12 print(BUGNUMBER + ": " + summary); | |
| 13 | |
| 14 /************** | |
| 15 * BEGIN TEST * | |
| 16 **************/ | |
| 17 | |
| 18 var arr = []; | |
| 19 var p = new Proxy(arr, {}); | |
| 20 | |
| 21 // This really should throw a TypeError, but we're buggy just yet, and this | |
| 22 // silently does nothing. | |
| 23 Object.defineProperty(p, "length", { value: 17, configurable: true }); | |
| 24 | |
| 25 // Same here. | |
| 26 Object.defineProperty(p, "length", { value: 42, enumerable: true }); | |
| 27 | |
| 28 // But at least we can check the property went unchanged. | |
| 29 var pd = Object.getOwnPropertyDescriptor(p, "length"); | |
| 30 assertEq(pd.value, 0); | |
| 31 assertEq(pd.writable, true); | |
| 32 assertEq(pd.enumerable, false); | |
| 33 assertEq(pd.configurable, false); | |
| 34 | |
| 35 var ad = Object.getOwnPropertyDescriptor(arr, "length"); | |
| 36 assertEq(ad.value, 0); | |
| 37 assertEq(ad.writable, true); | |
| 38 assertEq(ad.enumerable, false); | |
| 39 assertEq(ad.configurable, false); | |
| 40 | |
| 41 /******************************************************************************/ | |
| 42 | |
| 43 if (typeof reportCompare === "function") | |
| 44 reportCompare(true, true); | |
| 45 | |
| 46 print("Tests complete"); |
