mirror of
https://github.com/nodejs/node.git
synced 2025-05-21 17:44:15 +00:00
ec02b811a8
Pick up latest commit from the 5.4-lkgr branch. deps: edit V8 gitignore to allow trace event copy deps: update V8 trace event to 315bf1e2d45be7d53346c31cfcc37424a32c30c8 deps: edit V8 gitignore to allow gtest_prod.h copy deps: update V8 gtest to 6f8a66431cb592dad629028a50b3dd418a408c87 PR-URL: https://github.com/nodejs/node/pull/8317 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>
49 lines
1.9 KiB
JavaScript
49 lines
1.9 KiB
JavaScript
// Copyright 2016 the V8 project authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
// Check that @@isConcatSpreadable is checked when set on Object.prototype
|
|
|
|
"use strict"
|
|
|
|
var array = [1, 2, 3];
|
|
var object = {length: 1, '0': 'a'};
|
|
|
|
function testConcatDefaults() {
|
|
assertEquals(array, [].concat(array));
|
|
assertEquals(array, array.concat([]));
|
|
assertEquals([1, 2, 3, 1, 2, 3], array.concat(array));
|
|
assertEquals([object], [].concat(object));
|
|
assertEquals([1, 2, 3, object], array.concat(object));
|
|
assertEquals([object], Array.prototype.concat.call(object,[]));
|
|
assertEquals([object, 1, 2, 3], Array.prototype.concat.call(object, array));
|
|
assertEquals([object, object], Array.prototype.concat.call(object, object));
|
|
}
|
|
|
|
testConcatDefaults();
|
|
|
|
Array.prototype[Symbol.isConcatSpreadable] = false;
|
|
|
|
assertEquals([[], array], [].concat(array));
|
|
assertEquals([array, []], array.concat([]));
|
|
assertEquals([array, array], array.concat(array));
|
|
assertEquals([[], object], [].concat(object));
|
|
assertEquals([array, object], array.concat(object));
|
|
assertEquals([object, []], Array.prototype.concat.call(object,[]));
|
|
assertEquals([object, array], Array.prototype.concat.call(object, array));
|
|
assertEquals([object, object], Array.prototype.concat.call(object, object));
|
|
|
|
Array.prototype[Symbol.isConcatSpreadable] = true;
|
|
|
|
assertEquals(array, [].concat(array));
|
|
assertEquals(array, array.concat([]));
|
|
assertEquals([1, 2, 3, 1, 2, 3], array.concat(array));
|
|
assertEquals([object], [].concat(object));
|
|
assertEquals([1, 2, 3, object], array.concat(object));
|
|
assertEquals([object], Array.prototype.concat.call(object,[]));
|
|
assertEquals([object, 1, 2, 3], Array.prototype.concat.call(object, array));
|
|
assertEquals([object, object], Array.prototype.concat.call(object, object));
|
|
|
|
delete Array.prototype[Symbol.isConcatSpreadable];
|
|
testConcatDefaults();
|