41903f2af6
Split up the test so each test runs in a fresh Isolate with pristine protector state. Note that testArrayConcatES5 was not split out because it is a duplicate of mjsunit/array-concat.js, and testConcatRevokedProxy has already been split out as mjsunit/es6/array-concat-revocable-revoked-proxy-[12].js. Bug: v8:9837 Change-Id: I8f744b0263c82f1dae61a55032124d9129f8e6f3 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1864007 Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Commit-Queue: Shu-yu Guo <syg@chromium.org> Cr-Commit-Position: refs/heads/master@{#64366}
21 lines
738 B
JavaScript
21 lines
738 B
JavaScript
// Copyright 2014 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.
|
|
|
|
"use strict";
|
|
// If @@isConcatSpreadable is not used, the value of IsArray(O)
|
|
// is used to determine the spreadable property.
|
|
class A extends Array {}
|
|
var obj = [].concat(new A(1, 2, 3), new A(4, 5, 6), new A(7, 8, 9));
|
|
assertEquals(9, obj.length);
|
|
for (var i = 0; i < obj.length; ++i) {
|
|
assertEquals(i + 1, obj[i]);
|
|
}
|
|
|
|
// TODO(caitp): when concat is called on instances of classes which extend
|
|
// Array, they should:
|
|
//
|
|
// - return an instance of the class, rather than an Array instance (if from
|
|
// same Realm)
|
|
// - always treat such classes as concat-spreadable
|