test262/test/built-ins/Proxy/ownKeys/trap-is-undefined.js

23 lines
483 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: 9.5.12
description: >
[[OwnPropertyKeys]] ( )
7. If trap is undefined, then Return target.[[OwnPropertyKeys]]()
---*/
var target = {
foo: 1,
bar: 2
};
var p = new Proxy(target, {});
var keys = Object.keys(p);
assert.sameValue(keys[0], "foo");
assert.sameValue(keys[1], "bar");
assert.sameValue(keys.length, 2);