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PR-URL: https://github.com/nodejs/node/pull/19989 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Matheus Marchini <matheus@sthima.com> Reviewed-By: Gus Caplan <me@gus.host> Reviewed-By: Myles Borins <myles.borins@gmail.com>
23 lines
687 B
JavaScript
23 lines
687 B
JavaScript
// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax --no-stress-opt
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function f(a, i, v) { a[i] = v; }
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f("make it generic", 0, 0);
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(function TestIsConcatSpreadableProtector() {
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var o = {length: 1, '0': 99};
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%OptimizeObjectForAddingMultipleProperties(o, 0);
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f(o, Symbol.isConcatSpreadable, true);
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assertEquals([99], [].concat(o));
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})();
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(function TestSpeciesProtector() {
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function MyArray() {}
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assertTrue(%ArraySpeciesProtector());
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f(Array.prototype, "constructor", MyArray);
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assertFalse(%ArraySpeciesProtector());
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})();
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