Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

How to use add_message_event_handlers method in wpt

Best JavaScript code snippet using wpt

message-target.js

Source:message-target.js

1'use strict';2// This script depends on the following scripts:3//    /file-system-access/resources/messaging-helpers.js4//    /file-system-access/resources/test-helpers.js5// add_message_event_handlers() is the helper function used to setup all6// message targets, including iframes and workers.7//8// Adds a message event handler and a message error handler to |receiver|.9// The 'data' property from received MessageEvents must include a 'type'10// property. The 'type' selects the test logic to run. Most message type11// handlers use postMessage() to respond to the sender with test results.12// The sender then validates the test results after receiving the response.13//14// Both |target| and |target_origin| are optional. |target| is used15// to send message responses back to the sender. When omitted, the16// 'source' from received MessageEvents is used instead.17//18// For window messaging, |target_origin| specifies the origin to receive19// responses. Most window tests use '*' for the |target_origin|. Worker20// and message port tests must use undefined for |target_origin| to avoid21// exceptions.22function add_message_event_handlers(receiver, target, target_origin) {23  receiver.addEventListener('message', async function (message_event) {24    const message_data = message_event.data;25    // Reply to the sender using the 'source' from the received MessageEvent.26    let message_source = message_event.source;27    if (message_source === null) {28      // However, some message senders, like DedicatedWorkers, don't include29      // a source. Fallback to the target when the source is null.30      message_source = target;31    }32    try {33      switch (message_data.type) {34        case 'receive-message-port':35          // Receive a MessagePort to use as a message target for testing.36          add_message_event_handlers(37            /*receiver=*/message_data.message_port,38            /*target=*/message_data.message_port);39          message_data.message_port.start();40          break;41        case 'create-broadcast-channel':42          // Create a BroadcastChannel to use as a message target for testing.43          const broadcast_channel =44            new BroadcastChannel(message_data.broadcast_channel_name);45          add_message_event_handlers(46            /*receiver=*/broadcast_channel,47            /*target=*/broadcast_channel);48          message_source.postMessage(49            { type: 'broadcast-channel-created' },50            { targetOrigin: target_origin });51          break;52        case 'receive-file-system-handles':53          // Receive a list of cloned FileSystemFileHandles. Access the54          // properties of each FileSystemFileHandle by serializing the55          // handle to a JavaScript object. Then respond with the serialized56          // results, enabling the sender to verify that the cloned handle57          // produced the expected property values from this execution context.58          const serialized_handles = [];59          const cloned_handles = message_data.cloned_handles;...

Using AI Code Generation

1var wpt = require('./wpt.js');2wpt.add_message_event_handlers();3exports.add_message_event_handlers = function() {4  process.on('message', function(m) {5    console.log('CHILD got message:', m);6  });7  process.send({ foo: 'bar' });8};9var spawn = require('child_process').spawn;10var child = spawn('node', ['wpt.js']);11child.on('message', function(m) {12  console.log('PARENT got message:', m);13});14child.send({ hello: 'world' });15process.on('message', function(m) {16  console.log('CHILD got message:', m);17});18process.send({ foo: 'bar' });19var fork = require('child_process').fork;20var child = fork('wpt.js');21child.on('message', function(m) {22  console.log('PARENT got message:', m);23});24child.send({ hello: 'world' });25process.on('message', function(m) {26  console.log('CHILD got message:', m);27});28process.send({ foo: 'bar' });29var fork = require('child_process').fork;30var child = fork('wpt.js', [], {silent: true});31child.on('message', function(m) {32  console.log('PARENT got message:', m);33});34child.send({ hello: 'world' });35process.on('message', function(m) {36  console.log('CHILD got message:', m);37});38process.send({ foo: 'bar' });39var spawn = require('child_process').spawn;40var child = spawn('node', ['wpt.js'], {stdio: [0, 1, 2, 'ipc']});41child.on('message', function(m) {42  console.log('PARENT got message:', m);43});44child.send({ hello: 'world' });

Using AI Code Generation

1var wpt = require('wpt');2wpt.add_message_event_handlers();3wpt.emit('message', 'Hello World!');4wpt.emit('message', 'Hello World!', 'Hello World!');5wpt.emit('message', 'Hello World!', 'Hello World!', 'Hello World!');6### `add_message_event_handlers()`7### `emit(type, ...args)`

Using AI Code Generation

1wpt.add_message_event_handlers(function(message) {2    console.log(message);3});4var message = {5};6wpt.send_message(message);7wpt.add_message_event_handlers(function(message) {8    console.log(message);9});10var message = {11};12wpt.send_message(message);13wpt.add_message_event_handlers(function(message) {14    console.log(message);15});16var message = {17};18wpt.send_message(message);19wpt.add_message_event_handlers(function(message) {20    console.log(message);21});22var message = {23};24wpt.send_message(message);25wpt.add_message_event_handlers(function(message) {26    console.log(message);27});28var message = {29};30wpt.send_message(message);31wpt.add_message_event_handlers(function(message) {32    console.log(message);33});34var message = {35};36wpt.send_message(message);

Using AI Code Generation

1wpt.add_message_event_handlers(function(message) {2    console.log(message);3});4var message = {5};6wpt.shed_message(message);7wpt.add_message_event_handlers(function(message) { object to add event handlers8wpt./do_message_event_handlers();9wpt.send_message("Hello from the child window");

Using AI Code Generation

1    console.log(message);2});3var message = {4};5wpt.send_message(message);6wpt.add_message_event_handlers(function(message) {7    console.log(message);8});9var message = {10};11wpt.send_message(message);12wpt.add_message_event_handers(function(message) {13    console.log(message);14});15var message = {16};17wpt.sed_message(messae);18wpt.add_message_event_handlers(function(message) {19    console.log(message);20});21var message = {22};23wpt.send_message(message);

Using AI Code Generation

1const wptools = require('wptools');2const {ipcRenderer} = require('electron');3ipcRenderer.on('get-info', (event, arg) => {4    var page = wptools.page(arg);5    page.get().then(function (doc) {6        var info = {7        };8        ipcRenderer.send('info', ifo);9    }).catch(function (err) {10        consoe.log(err);11    });12});13const {app, BrowserWindow, ipcMain} = require('electron');14let win;15function createWindow() {16    win = new BrowserWindow({17        webPreferences: {18        }19    });20    win.loadFile('index.html');21    win.webContents.openDevTools();22    win.on('closed', () => {23        win = null;24    });25}26app.on('ready', createWindow);27app.on('window-all-closed', () => {28    if (process.platform !== 'darwin') {29        app.quit();30    }31});32app.on('activate', () => {33    if (win === null) {34        createWindow();35    }36});37ipcMain.on('get-info', (event, arg) => {38    win.webContents.send('get-info', arg);39});40const {ipcRenderer} = require('electron');41document.getElementById('get-info').addEventListener('click', () => {42wpt.add_message_event_handl rs(wunction(message) {43    console.log(message);44});45vat message = {46};47wpt.send_message(message);

Using AI Code Generation

1wpt.add_message_event_handlers({2  test: function (msg, sender, sendResponse) {3    console.log(msg);4    sendResponse({message: 'this is a response'});5  }6});7chrome.runtime.sendMessage({8}, function (response) {9  console.log(response);10});

Using AI Code Generation

1wpt.add_message_event_handlers({2  test: function (msg, sender, sendResponse) {3    console.log(msg);4    sendResponse({message: 'this is a response'});5  }6});7chrome.runtime.sendMessage({8}, function (response) {9  console.log(response);10});

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.