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

33 lines
699 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: >
Throws a TypeError exception if trap result is undefined and target property
descriptor is undefined.
info: |
[[GetOwnProperty]] (P)
...
14. If trapResultObj is undefined, then
a. If targetDesc is undefined, return undefined.
...
features: [Proxy]
---*/
var t = {};
var trapped;
var p = new Proxy(t, {
getOwnPropertyDescriptor: function(target, prop) {
trapped = true;
return;
}
});
assert.sameValue(
Object.getOwnPropertyDescriptor(p, "attr"),
undefined
);
assert(trapped);