| /* |
| * Any copyright is dedicated to the Public Domain. |
| * http://creativecommons.org/licenses/publicdomain/ |
| */ |
| |
| var gTestfile = 'proxy-__proto__.js'; |
| var BUGNUMBER = 950407; |
| var summary = "Behavior of __proto__ on ES6 proxies"; |
| |
| print(BUGNUMBER + ": " + summary); |
| |
| /************** |
| * BEGIN TEST * |
| **************/ |
| |
| var protoDesc = Object.getOwnPropertyDescriptor(Object.prototype, "__proto__"); |
| var protoGetter = protoDesc.get; |
| var protoSetter = protoDesc.set; |
| |
| function testProxy(target, initialProto) |
| { |
| print("Now testing behavior for new Proxy(" + ("" + target) + ", {})"); |
| |
| var pobj = new Proxy(target, {}); |
| |
| // Check [[Prototype]] before attempted mutation |
| assertEq(Object.getPrototypeOf(pobj), initialProto); |
| assertEq(protoGetter.call(pobj), initialProto); |
| |
| // Attempt [[Prototype]] mutation |
| protoSetter.call(pobj, null); |
| |
| // Check [[Prototype]] after attempted mutation |
| assertEq(Object.getPrototypeOf(pobj), null); |
| assertEq(protoGetter.call(pobj), null); |
| assertEq(Object.getPrototypeOf(target), null); |
| } |
| |
| // Proxy object with non-null [[Prototype]] |
| var nonNullProto = { toString: function() { return "non-null prototype"; } }; |
| var target = Object.create(nonNullProto); |
| testProxy(target, nonNullProto); |
| |
| // Proxy object with null [[Prototype]] |
| target = Object.create(null); |
| target.toString = function() { return "null prototype" }; |
| testProxy(target, null); |
| |
| // Proxy function with [[Call]] |
| var callForCallOnly = function () { }; |
| callForCallOnly.toString = function() { return "callable target"; }; |
| testProxy(callForCallOnly, Function.prototype); |
| |
| /******************************************************************************/ |
| |
| if (typeof reportCompare === "function") |
| reportCompare(true, true); |
| |
| print("Tests complete"); |