test262/test/built-ins/Proxy/getOwnPropertyDescriptor/result-is-undefined.js

30 lines
663 B
JavaScript

// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 9.5.5
description: >
Return undefined if trap result is undefined and target is extensible and
the target property descriptor is configurable.
info: |
[[GetOwnProperty]] (P)
...
14. If trapResultObj is undefined, then
...
f. Return undefined.
...
features: [Proxy]
---*/
var target = {
attr: 1
};
var p = new Proxy(target, {
getOwnPropertyDescriptor: function(t, prop) {
return;
}
});
assert.sameValue(Object.getOwnPropertyDescriptor(p, "attr"), undefined);