mirror of
https://github.com/tc39/test262.git
synced 2025-11-04 05:33:50 +01:00
44 lines
1.3 KiB
JavaScript
44 lines
1.3 KiB
JavaScript
// Copyright (C) 2016 Jordan Harband. All rights reserved.
|
||
// This code is governed by the BSD license found in the LICENSE file.
|
||
|
||
/*---
|
||
description: Object.getOwnPropertyDescriptors does not see inherited properties.
|
||
esid: sec-object.getownpropertydescriptors
|
||
author: Jordan Harband
|
||
---*/
|
||
|
||
var F = function() {};
|
||
F.prototype.a = {};
|
||
F.prototype.b = {};
|
||
|
||
var f = new F();
|
||
var bValue = {};
|
||
f.b = bValue; // shadow the prototype
|
||
Object.defineProperty(f, 'c', {
|
||
enumerable: false,
|
||
configurable: true,
|
||
writable: false,
|
||
value: {}
|
||
}); // solely an own property
|
||
|
||
var result = Object.getOwnPropertyDescriptors(f);
|
||
|
||
assert.sameValue(!!result.b, true, 'b has a descriptor');
|
||
assert.sameValue(!!result.c, true, 'c has a descriptor');
|
||
|
||
assert.sameValue(result.b.enumerable, true, 'b is enumerable');
|
||
assert.sameValue(result.b.configurable, true, 'b is configurable');
|
||
assert.sameValue(result.b.writable, true, 'b is writable');
|
||
assert.sameValue(result.b.value, bValue, 'b’s value is `bValue`');
|
||
|
||
assert.sameValue(result.c.enumerable, false, 'c is enumerable');
|
||
assert.sameValue(result.c.configurable, true, 'c is configurable');
|
||
assert.sameValue(result.c.writable, false, 'c is writable');
|
||
assert.sameValue(result.c.value, f.c, 'c’s value is `f.c`');
|
||
|
||
assert.sameValue(
|
||
Object.keys(result).length,
|
||
2,
|
||
'result has same number of own property names as f'
|
||
);
|