JSTests/test262/test/built-ins/Proxy/ownKeys/call-parameters-object-getownpropertysymbols.js

// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-proxy-object-internal-methods-and-internal-slots-ownpropertykeys
description: >
    [[OwnPropertyKeys]] ( )

    7. Let trapResultArray be ? Call(trap, handler, « target »).

features: [Proxy, Symbol]
---*/

var _target, _handler;
var target = {};
var a = Symbol('a');
var b = Symbol('b');

target[a] = 1;
target[b] = 2;

var handler = {
  ownKeys: function(t) {
    _handler = this;
    _target = t;
    return Object.getOwnPropertySymbols(t);
  }
}
var p = new Proxy(target, handler);

var symbols = Object.getOwnPropertySymbols(p);

assert.sameValue(symbols[0], a);
assert.sameValue(symbols[1], b);
assert.sameValue(symbols.length, 2);
assert.sameValue(_handler, handler);
assert.sameValue(_target, target);