v8/test/mjsunit/es6/array-concat-revoked-proxy-2.js

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// 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.
(function testConcatRevokedProxyToArray() {
"use strict";
var handler = {
get(_, name) {
if (name === Symbol.isConcatSpreadable) {
p.revoke();
}
return target[name];
}
}
var target = [];
var p = Proxy.revocable(target, handler);
assertThrows(function() { [].concat(p.proxy); }, TypeError);
})();