mirror of https://github.com/tc39/test262.git
50 lines
1.1 KiB
JavaScript
50 lines
1.1 KiB
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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// Create {count} property assignments.
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function createPropertiesAssignment(count) {
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let result = "";
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for (let i = 0; i < count; i++) {
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result += "this.p"+i+" = undefined;";
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}
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return result;
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}
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function testSubclassProtoProperties(count) {
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const MyClass = eval(`(class MyClass {
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constructor() {
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${createPropertiesAssignment(count)}
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}
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});`);
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class BaseClass {};
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class SubClass extends BaseClass {
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constructor() {
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super()
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}
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};
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const boundMyClass = MyClass.bind();
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%HeapObjectVerify(boundMyClass);
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SubClass.__proto__ = boundMyClass;
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var instance = new SubClass();
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%HeapObjectVerify(instance);
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// Create some more instances to complete in-object slack tracking.
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let results = [];
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for (let i = 0; i < 4000; i++) {
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results.push(new SubClass());
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}
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var instance = new SubClass();
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%HeapObjectVerify(instance);
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}
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for (let count = 0; count < 10; count++) {
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testSubclassProtoProperties(count);
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}
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