v8/test/mjsunit/es6/array-concat-spreadable-arraylike-proxy-bogus-length.js
Shu-yu Guo 41903f2af6 Split up mjsunit/es6/array-concat.js
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}
2019-10-18 00:53:47 +00:00

18 lines
647 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.
// Note: concat does not currently support species so there is no difference
// between [].concat(foo) and Array.prototype.concat.apply(foo).
var getTrap = function(t, key) {
if (key === "length") return Symbol();
if (key === "2") return "baz";
if (key === "3") return "bar";
};
var target = [];
var obj = new Proxy(target, {get: getTrap, has: () => true});
assertThrows(() => [].concat(obj), TypeError);
assertThrows(() => Array.prototype.concat.apply(obj), TypeError);