The Tor Browser / file comparison
comparison: js/src/tests/ecma_6/Proxy/proxy-__proto__.js
js/src/tests/ecma_6/Proxy/proxy-__proto__.js
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:1406df625a87 |
|---|---|
| 1 /* | |
| 2 * Any copyright is dedicated to the Public Domain. | |
| 3 * http://creativecommons.org/licenses/publicdomain/ | |
| 4 */ | |
| 5 | |
| 6 var gTestfile = 'proxy-__proto__.js'; | |
| 7 var BUGNUMBER = 950407; | |
| 8 var summary = "Behavior of __proto__ on ES6 proxies"; | |
| 9 | |
| 10 print(BUGNUMBER + ": " + summary); | |
| 11 | |
| 12 /************** | |
| 13 * BEGIN TEST * | |
| 14 **************/ | |
| 15 | |
| 16 var protoDesc = Object.getOwnPropertyDescriptor(Object.prototype, "__proto__"); | |
| 17 var protoGetter = protoDesc.get; | |
| 18 var protoSetter = protoDesc.set; | |
| 19 | |
| 20 function testProxy(target, initialProto) | |
| 21 { | |
| 22 print("Now testing behavior for new Proxy(" + ("" + target) + ", {})"); | |
| 23 | |
| 24 var pobj = new Proxy(target, {}); | |
| 25 | |
| 26 // Check [[Prototype]] before attempted mutation | |
| 27 assertEq(Object.getPrototypeOf(pobj), initialProto); | |
| 28 assertEq(protoGetter.call(pobj), initialProto); | |
| 29 | |
| 30 // Attempt [[Prototype]] mutation | |
| 31 protoSetter.call(pobj, null); | |
| 32 | |
| 33 // Check [[Prototype]] after attempted mutation | |
| 34 assertEq(Object.getPrototypeOf(pobj), null); | |
| 35 assertEq(protoGetter.call(pobj), null); | |
| 36 assertEq(Object.getPrototypeOf(target), null); | |
| 37 } | |
| 38 | |
| 39 // Proxy object with non-null [[Prototype]] | |
| 40 var nonNullProto = { toString: function() { return "non-null prototype"; } }; | |
| 41 var target = Object.create(nonNullProto); | |
| 42 testProxy(target, nonNullProto); | |
| 43 | |
| 44 // Proxy object with null [[Prototype]] | |
| 45 target = Object.create(null); | |
| 46 target.toString = function() { return "null prototype" }; | |
| 47 testProxy(target, null); | |
| 48 | |
| 49 // Proxy function with [[Call]] | |
| 50 var callForCallOnly = function () { }; | |
| 51 callForCallOnly.toString = function() { return "callable target"; }; | |
| 52 testProxy(callForCallOnly, Function.prototype); | |
| 53 | |
| 54 /******************************************************************************/ | |
| 55 | |
| 56 if (typeof reportCompare === "function") | |
| 57 reportCompare(true, true); | |
| 58 | |
| 59 print("Tests complete"); |
