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

21 lines
523 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: 9.5.7
description: >
Return target.[[HasProperty]](P) if trap is undefined.
info: >
[[HasProperty]] (P)
...
8. If trap is undefined, then
a. Return target.[[HasProperty]](P).
...
---*/
var target = Object.create(Array.prototype);
var p = new Proxy(target, {});
assert.sameValue(("foo" in p), false);
assert.sameValue(("length" in p), true);