1// Copyright 2014 the V8 project authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5function assertIteratorResult(value, done, result) {
6  assertEquals({value: value, done: done}, result);
7}
8
9function test(f) {
10  var cdesc = Object.getOwnPropertyDescriptor(f, "caller");
11  var adesc = Object.getOwnPropertyDescriptor(f, "arguments");
12
13  assertFalse(cdesc.enumerable);
14  assertFalse(cdesc.configurable);
15
16  assertFalse(adesc.enumerable);
17  assertFalse(adesc.configurable);
18
19  assertSame(cdesc.get, cdesc.set);
20  assertSame(cdesc.get, adesc.get);
21  assertSame(cdesc.get, adesc.set);
22
23  assertTrue(cdesc.get instanceof Function);
24  assertEquals(0, cdesc.get.length);
25  assertThrows(cdesc.get, TypeError);
26
27  assertThrows(function() { return f.caller; }, TypeError);
28  assertThrows(function() { f.caller = 42; }, TypeError);
29  assertThrows(function() { return f.arguments; }, TypeError);
30  assertThrows(function() { f.arguments = 42; }, TypeError);
31}
32
33function *sloppy() { test(sloppy); }
34function *strict() { "use strict"; test(strict); }
35
36test(sloppy);
37test(strict);
38
39assertIteratorResult(undefined, true, sloppy().next());
40assertIteratorResult(undefined, true, strict().next());
41