| // Return a new descriptor object that agrees with that returned by the trap |
| var target = {}; |
| Object.defineProperty(target, 'foo', { |
| value: 'bar', |
| writable: true, |
| enumerable: false, |
| configurable: true |
| }); |
| |
| var desc = { |
| value: 'baz', |
| writable: false, |
| enumerable: true, |
| configurable: true |
| }; |
| var handler = { getOwnPropertyDescriptor: function () { return desc; } }; |
| for (let p of [new Proxy(target, handler), Proxy.revocable(target, handler).proxy]) { |
| var desc1 = Object.getOwnPropertyDescriptor(p, 'foo'); |
| assertEq(desc1 == desc, false); |
| assertEq(desc1.value, 'baz'); |
| assertEq(desc1.writable, false); |
| assertEq(desc1.enumerable, true); |
| assertEq(desc1.configurable, true); |
| } |
| |
| // The returned descriptor must agree in configurability. |
| desc = { configurable : true }; |
| for (let p of [new Proxy(target, handler), Proxy.revocable(target, handler).proxy]) { |
| var desc1 = Object.getOwnPropertyDescriptor(p, 'foo'); |
| assertEq(desc1 == desc, false); |
| assertEq(desc1.value, undefined); |
| assertEq(desc1.writable, false); |
| assertEq(desc1.enumerable, false); |
| assertEq(desc1.configurable, true); |
| } |