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f579e11940
PR-URL: https://github.com/nodejs/node/pull/26685 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: Refael Ackermann <refack@gmail.com>
31 lines
918 B
JavaScript
31 lines
918 B
JavaScript
// Copyright 2018 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
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(function TestWithNullPrototype() {
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function f() { return Object.create(null); }
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%PrepareFunctionForOptimization(f);
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f();
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%OptimizeFunctionOnNextCall(f);
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assertEquals(undefined, f().foo);
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})();
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(function TestWithCustomPrototype() {
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const x = {foo: 42}; // This must be defined here for context specialization.
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function f() { return Object.create(x); }
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%PrepareFunctionForOptimization(f);
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f();
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%OptimizeFunctionOnNextCall(f);
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assertEquals(42, f().foo);
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})();
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(function TestWithObjectPrototype() {
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function f() { return Object.create(Object.prototype); }
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%PrepareFunctionForOptimization(f);
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f();
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%OptimizeFunctionOnNextCall(f);
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assertEquals("[object Object]", f().toString());
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})();
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