71 lines
2.2 KiB
JavaScript
71 lines
2.2 KiB
JavaScript
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////////////////////////////////////////////////////////////////////////////
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//
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// Copyright 2016 Realm Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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////////////////////////////////////////////////////////////////////////////
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/*
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* This test suite is trying to make a bunch of objects with properties of type "data", which will use an ArrayBuffer
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* when accessed.
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* The reason for this test suite is that we have experianced issues in the current version (v1.6.11) of Electron that
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* will crash when an v8::ArrayBuffer is garbage collected.
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* @see https://github.com/electron/electron/issues/2601#issuecomment-135258750
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*/
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'use strict';
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const Realm = require('realm');
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const TestCase = require('./asserts');
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const NUMBER_OF_OBJECTS = 1000;
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const BUFFER_LENGTH = 1024;
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const READ_CYCLES = 10;
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module.exports = {
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testPropertiesOfData: () => {
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const TestingSchema = {
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name: 'Testing',
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properties: {
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n: 'int',
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someData: 'data'
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}
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};
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// Create a new realm
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const realm = new Realm({schema: [TestingSchema]});
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// Add a bunch of objects, with "data" to it
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realm.write(() => {
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for(let i = 0; i < NUMBER_OF_OBJECTS; i++) {
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realm.create('Testing', {
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n: i,
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someData: new ArrayBuffer(BUFFER_LENGTH),
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});
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}
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});
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for (let readCycle = 0; readCycle < READ_CYCLES; readCycle++) {
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let allObjects = realm.objects('Testing');
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let totalBytes = 0;
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for (let object of allObjects) {
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let toBeFreed = object.someData;
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// Accessing the byteLength of the objects someData property
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totalBytes += toBeFreed.byteLength;
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}
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// console.log(`Read a total of ${totalBytes} bytes.`);
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}
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}
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};
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