Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

How to use LoopbackPort method in wpt

Best JavaScript code snippet using wpt

message_handler_spec.js

Source:message_handler_spec.js

...23    });24  }25  describe('sendWithStream', function () {26    it('should return a ReadableStream', function () {27      let port = new LoopbackPort();28      let messageHandler1 = new MessageHandler('main', 'worker', port);29      let readable = messageHandler1.sendWithStream('fakeHandler');30      // Check if readable is an instance of ReadableStream.31      expect(typeof readable).toEqual('object');32      expect(typeof readable.getReader).toEqual('function');33    });34    it('should read using a reader', function (done) {35      let log = '';36      let port = new LoopbackPort();37      let messageHandler1 = new MessageHandler('main', 'worker', port);38      let messageHandler2 = new MessageHandler('worker', 'main', port);39      messageHandler2.on('fakeHandler', (data, sink) => {40        sink.onPull = function () {41          log += 'p';42        };43        sink.onCancel = function (reason) {44          log += 'c';45        };46        sink.ready.then(() => {47          sink.enqueue('hi');48          return sink.ready;49        }).then(() => {50          sink.close();51        });52        return sleep(5);53      });54      let readable = messageHandler1.sendWithStream('fakeHandler', {}, {55        highWaterMark: 1,56        size() {57          return 1;58        },59      });60      let reader = readable.getReader();61      sleep(10).then(() => {62        expect(log).toEqual('');63        return reader.read();64      }).then((result) => {65        expect(log).toEqual('p');66        expect(result.value).toEqual('hi');67        expect(result.done).toEqual(false);68        return sleep(10);69      }).then(() => {70        return reader.read();71      }).then((result) => {72        expect(result.value).toEqual(undefined);73        expect(result.done).toEqual(true);74        done();75      });76    });77    it('should not read any data when cancelled', function (done) {78      let log = '';79      let port = new LoopbackPort();80      let messageHandler2 = new MessageHandler('worker', 'main', port);81      messageHandler2.on('fakeHandler', (data, sink) => {82        sink.onPull = function () {83          log += 'p';84        };85        sink.onCancel = function (reason) {86          log += 'c';87        };88        log += '0';89        sink.ready.then(() => {90          log += '1';91          sink.enqueue([1, 2, 3, 4], 4);92          return sink.ready;93        }).then(() => {94          log += '2';95          sink.enqueue([5, 6, 7, 8], 4);96          return sink.ready;97        }).then(() => {98          log += '3';99          sink.close();100        }, () => {101          log += '4';102        });103      });104      let messageHandler1 = new MessageHandler('main', 'worker', port);105      let readable = messageHandler1.sendWithStream('fakeHandler', {}, {106        highWaterMark: 4,107        size(arr) {108          return arr.length;109        },110      });111      let reader = readable.getReader();112      sleep(10).then(() => {113        expect(log).toEqual('01');114        return reader.read();115      }).then((result) => {116        expect(result.value).toEqual([1, 2, 3, 4]);117        expect(result.done).toEqual(false);118        return sleep(10);119      }).then(() => {120        expect(log).toEqual('01p2');121        return reader.cancel();122      }).then(() => {123        expect(log).toEqual('01p2c4');124        done();125      });126    });127    it('should not read when errored', function(done) {128      let log = '';129      let port = new LoopbackPort();130      let messageHandler2 = new MessageHandler('worker', 'main', port);131      messageHandler2.on('fakeHandler', (data, sink) => {132        sink.onPull = function () {133          log += 'p';134        };135        sink.onCancel = function (reason) {136          log += 'c';137        };138        sink.ready.then(() => {139          sink.enqueue([1, 2, 3, 4], 4);140          return sink.ready;141        }).then(() => {142          log += 'error';143          sink.error('error');144        });145      });146      let messageHandler1 = new MessageHandler('main', 'worker', port);147      let readable = messageHandler1.sendWithStream('fakeHandler', {}, {148        highWaterMark: 4,149        size(arr) {150          return arr.length;151        },152      });153      let reader = readable.getReader();154      sleep(10).then(() => {155        expect(log).toEqual('');156        return reader.read();157      }).then((result) => {158        expect(result.value).toEqual([1, 2, 3, 4]);159        expect(result.done).toEqual(false);160        return reader.read();161      }).then(() => {162      }, (reason) => {163        expect(reason).toEqual('error');164        done();165      });166    });167    it('should read data with blocking promise', function (done) {168      let log = '';169      let port = new LoopbackPort();170      let messageHandler2 = new MessageHandler('worker', 'main', port);171      messageHandler2.on('fakeHandler', (data, sink) => {172        sink.onPull = function () {173          log += 'p';174        };175        sink.onCancel = function (reason) {176          log += 'c';177        };178        log += '0';179        sink.ready.then(() => {180          log += '1';181          sink.enqueue([1, 2, 3, 4], 4);182          return sink.ready;183        }).then(() => {184          log += '2';185          sink.enqueue([5, 6, 7, 8], 4);186          return sink.ready;187        }).then(() => {188          sink.close();189        });190      });191      let messageHandler1 = new MessageHandler('main', 'worker', port);192      let readable = messageHandler1.sendWithStream('fakeHandler', {}, {193        highWaterMark: 4,194        size(arr) {195          return arr.length;196        },197      });198      let reader = readable.getReader();199      // Sleep for 10ms, so that read() is not unblocking the ready promise.200      // Chain all read() to stream in sequence.201      sleep(10).then(() => {202        expect(log).toEqual('01');203        return reader.read();204      }).then((result) => {205        expect(result.value).toEqual([1, 2, 3, 4]);206        expect(result.done).toEqual(false);207        return sleep(10);208      }).then(() => {209        expect(log).toEqual('01p2');210        return reader.read();211      }).then((result) => {212        expect(result.value).toEqual([5, 6, 7, 8]);213        expect(result.done).toEqual(false);214        return sleep(10);215      }).then(() => {216        expect(log).toEqual('01p2p');217        return reader.read();218      }).then((result) => {219        expect(result.value).toEqual(undefined);220        expect(result.done).toEqual(true);221        done();222      });223    });224    it('should read data with blocking promise and buffer whole data' +225       ' into stream', function (done) {226      let log = '';227      let port = new LoopbackPort();228      let messageHandler2 = new MessageHandler('worker', 'main', port);229      messageHandler2.on('fakeHandler', (data, sink) => {230        sink.onPull = function () {231          log += 'p';232        };233        sink.onCancel = function (reason) {234          log += 'c';235        };236        log += '0';237        sink.ready.then(() => {238          log += '1';239          sink.enqueue([1, 2, 3, 4], 4);240          return sink.ready;241        }).then(() => {242          log += '2';243          sink.enqueue([5, 6, 7, 8], 4);244          return sink.ready;245        }).then(() => {246          sink.close();247        });248        return sleep(10);249      });250      let messageHandler1 = new MessageHandler('main', 'worker', port);251      let readable = messageHandler1.sendWithStream('fakeHandler', {}, {252        highWaterMark: 8,253        size(arr) {254          return arr.length;255        },256      });257      let reader = readable.getReader();258      sleep(10).then(() => {259        expect(log).toEqual('012');260        return reader.read();261      }).then((result) => {262        expect(result.value).toEqual([1, 2, 3, 4]);263        expect(result.done).toEqual(false);264        return sleep(10);265      }).then(() => {266        expect(log).toEqual('012p');267        return reader.read();268      }).then((result) => {269        expect(result.value).toEqual([5, 6, 7, 8]);270        expect(result.done).toEqual(false);271        return sleep(10);272      }).then(() => {273        expect(log).toEqual('012p');274        return reader.read();275      }).then((result) => {276        expect(result.value).toEqual(undefined);277        expect(result.done).toEqual(true);278        done();279      });280    });281    it('should ignore any pull after close is called', function (done) {282      let log = '';283      let port = new LoopbackPort();284      let capability = createPromiseCapability();285      let messageHandler2 = new MessageHandler('worker', 'main', port);286      messageHandler2.on('fakeHandler', (data, sink) => {287        sink.onPull = function () {288          log += 'p';289        };290        sink.onCancel = function (reason) {291          log += 'c';292        };293        log += '0';294        sink.ready.then(() => {295          log += '1';296          sink.enqueue([1, 2, 3, 4], 4);297        });...

Using AI Code Generation

1var wptb = require('wptb');2var loopback = new wptb.LoopbackPort();3loopback.write('Hello World!');4var wptb = require('wptb');5var loopback = new wptb.LoopbackPort();6loopback.on('data', function(data){7  console.log(data);8});9var wptb = require('wptb');10var loopback = new wptb.LoopbackPort();11loopback.on('data', function(data){12  console.log(data);13});14loopback.write('Hello World!');15var wptb = require('wptb');16var loopback = new wptb.LoopbackPort();17var SerialPort = require('wptb-serialport');18var serialport = new SerialPort(loopback, function (err) {19  if (err) {20    return console.log('Error: ', err.message);21  }22  serialport.write('Hello World!');23});24serialport.on('data', function(data){25  console.log(data);26});27var wptb = require('wptb');28var loopback = new wptb.LoopbackPort();29var Socket = require('wptb-socket');30var socket = new Socket(loopback, function (err) {31  if (err) {32    return console.log('Error: ', err.message);33  }34  socket.write('Hello World!');35});36socket.on('data', function(data){37  console.log(data);38});39var wptb = require('wptb');

Using AI Code Generation

1var wptb = require('wptb');2var loopbackPort = new wptb.LoopbackPort('COM5');3loopbackPort.on('data', function(data) {4	console.log('data received: ' + data);5});6loopbackPort.on('error', function(err) {7	console.log('error: ' + err);8});9loopbackPort.on('close', function() {10	console.log('port closed');11});12loopbackPort.open(function(err) {13	if (err) {14		console.log('error opening port: ' + err);15	} else {16		console.log('port opened');17		loopbackPort.write('hello');18	}19});20var wptb = require('wptb');21var serialPort = new wptb.SerialPort('COM5');22serialPort.on('data', function(data) {23	console.log('data received: ' + data);24});25serialPort.on('error', function(err) {26	console.log('error: ' + err);27});28serialPort.on('close', function() {29	console.log('port closed');30});31serialPort.open(function(err) {32	if (err) {33		console.log('error opening port: ' + err);34	} else {35		console.log('port opened');36		serialPort.write('hello');37	}38});39var wptb = require('wptb');40var socketPort = new wptb.SocketPort('

Using AI Code Generation

1var wptools = require('wptools');2var port = 8080;3var options = {4  userAgent: 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.76 Safari/537.36'5};6wptools.setOptions(options);7wptools.setLoopbackPort(port);8wptools.page('Albert Einstein').then(function(page) {9  console.log(page.json());10});11var wptools = require('wptools');12var port = 8080;13var options = {14  userAgent: 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.76 Safari/537.36'15};16wptools.setOptions(options);17wptools.setLoopbackPort(port);18wptools.page('Albert Einstein').then(function(page) {19  console.log(page.json());20});21var wptools = require('wptools');22var port = 8080;23var options = {24  userAgent: 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.76 Safari/537.36'25};26wptools.setOptions(options);27wptools.setLoopbackPort(port);28wptools.page('Albert Einstein').then(function(page) {29  console.log(page.json());30});31var wptools = require('wptools');32var port = 8080;33var options = {34  userAgent: 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko

Using AI Code Generation

1var wptdriver = require('wptdriver');2var driver = new wptdriver.Driver();3driver.start(function() {4    driver.createLoopbackPort(function(port) {5            driver.takeScreenshot(function (data) {6                console.log(data);7                driver.stop();8            });9        });10    });11});

Using AI Code Generation

1var wpt = require('wptdriver');2wpt.LoopbackPort(function (err, port) {3  if (err) {4    console.log(err);5  } else {6    console.log(port);7  }8});9var wpt = require('wptdriver');10wpt.LoopbackPort(function (err, port) {11  if (err) {12    console.log(err);13  } else {14    console.log(port);15  }16});17var wpt = require('wptdriver');18wpt.LoopbackPort(function (err, port) {19  if (err) {20    console.log(err);21  } else {22    console.log(port);23  }24});25var wpt = require('wptdriver');26wpt.LoopbackPort(function (err, port) {27  if (err) {28    console.log(err);29  } else {30    console.log(port);31  }32});33var wpt = require('wptdriver');34wpt.LoopbackPort(function (err, port) {35  if (err) {36    console.log(err);37  } else {38    console.log(port);39  }40});41var wpt = require('wptdriver');42wpt.LoopbackPort(function (err, port) {43  if (err) {44    console.log(err);45  } else {46    console.log(port);47  }48});49var wpt = require('wptdriver');50wpt.LoopbackPort(function (err, port) {51  if (err) {52    console.log(err);53  } else {54    console.log(port);

Using AI Code Generation

1var wptb = require('wptb');2var port = wptb.LoopbackPort();3var test = wptb.WPTB(port);4test.on('data', function(data) {5    console.log(data);6});7test.on('error', function(err) {8    console.log(err);9});10test.on('open', function() {11    console.log('open');12    test.write('Hello World');13});14test.on('close', function() {15    console.log('close');16});17test.open();18test.close();19var wptb = require('wptb');20var serialport = require('serialport');21var port = new serialport.SerialPort('/dev/ttyUSB0', {22    parser: serialport.parsers.readline("\r")23});24var test = wptb.WPTB(port);25test.on('data', function(data)

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.