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PR-URL: https://github.com/nodejs/node/pull/44741 Fixes: https://github.com/nodejs/node/issues/44650 Fixes: https://github.com/nodejs/node/issues/37472 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
42 lines
1.3 KiB
JavaScript
42 lines
1.3 KiB
JavaScript
// Copyright 2019 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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// This gets very slow with stress flags, and triggers optimization anyway:
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// Flags: --noalways-turbofan
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(function testLargeClassesProperties(){
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// This is to test for dictionary mode when there more than
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// kMaxNumberOfDescriptors (1024) properties.
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const kLimit = 1030;
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let evalString = "function f(i) { " +
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"let clazz = class { " +
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" constructor(i) { this.value = i;";
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for (let i = 0; i < kLimit ; i++) {
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evalString += "this.property"+i +" = "+i+"; "
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}
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evalString += "}};" +
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" return (new clazz(i)); }; f;";
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let fn = eval(evalString);
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%PrepareFunctionForOptimization(fn);
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assertEquals(fn(1).value, 1);
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assertEquals(fn(2).value, 2);
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assertEquals(fn(3).value, 3);
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%OptimizeFunctionOnNextCall(fn);
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assertEquals(fn(4).value, 4);
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let instance = fn(1);
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assertEquals(Object.getOwnPropertyNames(instance).length, kLimit+1);
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// Get and set all properties.
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for (let i = 0; i < kLimit; i++) {
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const key = "property" + i;
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assertEquals(instance[key], i);
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const value = "value"+i;
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instance[key] = value;
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assertEquals(instance[key], value);
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}
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})();
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