mirror of https://github.com/tc39/test262.git
42 lines
1.0 KiB
JavaScript
42 lines
1.0 KiB
JavaScript
// Copyright (C) Copyright 2014 the V8 project authors. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
/*---
|
|
es6id: 12.2.5
|
|
description: >
|
|
computed property names can be a symbol
|
|
includes: [compareArray.js]
|
|
---*/
|
|
|
|
function ID(x) {
|
|
return x;
|
|
}
|
|
|
|
var sym1 = Symbol();
|
|
var sym2 = Symbol();
|
|
var object = {
|
|
a: 'A',
|
|
[sym1]: 'B',
|
|
c: 'C',
|
|
[ID(sym2)]: 'D',
|
|
};
|
|
assert.sameValue(object.a, 'A');
|
|
assert.sameValue(object[sym1], 'B');
|
|
assert.sameValue(object.c, 'C');
|
|
assert.sameValue(object[sym2], 'D');
|
|
assert(compareArray(Object.keys(object), ['a', 'c']));
|
|
|
|
// compareArray expects arguments to be sorted,
|
|
// which will cause an array containing symbols to
|
|
// throw an exception when toString() is called.
|
|
//
|
|
// Since there is no guarantee of order:
|
|
//
|
|
// - Assert only that the symbol is present
|
|
// - Assert that the length is correct
|
|
//
|
|
var symbols = Object.getOwnPropertySymbols(object);
|
|
|
|
assert(symbols.indexOf(sym1) !== -1);
|
|
assert(symbols.indexOf(sym2) !== -1);
|
|
assert.sameValue(symbols.length, 2);
|