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How to use serializeArgument method in Playwright Internal
Best JavaScript code snippet using playwright-internal
helper.js
Source: helper.js 
...54 /**55 * @param {*} arg56 * @return {string}57 */58 function serializeArgument(arg) {59 if (Object.is(arg, undefined))60 return 'undefined';61 return JSON.stringify(arg);62 }63 }64 /**65 * @param {function} nodeFunction66 * @return {function}67 */68 static promisify(nodeFunction) {69 function promisified(...args) {70 return new Promise((resolve, reject) => {71 function callback(err, ...result) {72 if (err)...
jsHandle.js
Source: jsHandle.js
...39 return this._wrapApiCall(async channel => {40 const result = await channel.evaluateExpression({41 expression: String(pageFunction),42 isFunction: typeof pageFunction === 'function',43 arg: serializeArgument(arg)44 });45 return parseResult(result.value);46 });47 }48 async evaluateHandle(pageFunction, arg) {49 return this._wrapApiCall(async channel => {50 const result = await channel.evaluateExpressionHandle({51 expression: String(pageFunction),52 isFunction: typeof pageFunction === 'function',53 arg: serializeArgument(arg)54 });55 return JSHandle.from(result.handle);56 });57 }58 async getProperty(propertyName) {59 return this._wrapApiCall(async channel => {60 const result = await channel.getProperty({61 name: propertyName62 });63 return JSHandle.from(result.handle);64 });65 }66 async getProperties() {67 return this._wrapApiCall(async channel => {68 const map = new Map();69 for (const {70 name,71 value72 } of (await channel.getPropertyList()).properties) map.set(name, JSHandle.from(value));73 return map;74 });75 }76 async jsonValue() {77 return this._wrapApiCall(async channel => {78 return parseResult((await channel.jsonValue()).value);79 });80 }81 asElement() {82 return null;83 }84 async dispose() {85 return this._wrapApiCall(async channel => {86 return await channel.dispose();87 });88 }89 toString() {90 return this._preview;91 }92} // This function takes care of converting all JSHandles to their channels,93// so that generic channel serializer converts them to guids.94exports.JSHandle = JSHandle;95function serializeArgument(arg) {96 const handles = [];97 const pushHandle = channel => {98 handles.push(channel);99 return handles.length - 1;100 };101 const value = (0, _serializers.serializeValue)(arg, value => {102 if (value instanceof JSHandle) return {103 h: pushHandle(value._channel)104 };105 return {106 fallThrough: value107 };108 }, new Set());109 return {...
serialize.js
Source: serialize.js
1var serializeError = require('error-stack-parser');2var uniqueSelector = require('unique-selector');3function serializeArgument(arg, data) {4 var Error = window.Error;5 var ErrorEvent = window.ErrorEvent;6 var RegExp = window.RegExp;7 var Node = window.Node;8 var Element = window.Element;9 var Window = window.Window;10 // serialize(obj) will turn obj into a JSON-ish representation11 var reflist = [];12 function serialize(obj) {13 if (obj === undefined) {14 return JSON.stringify('<undefined>');15 }16 // class: Window17 if (Window && obj instanceof Window) {18 return JSON.stringify('[DOM Window]');19 }20 // class: Element (dom element, cannot be serialized without hazard)21 if (Element && obj instanceof Element) {22 return JSON.stringify('[DOM Element (' + uniqueSelector(obj) + ')]');23 }24 // class: Node (other dom nodes, cannot be serialized without hazard)25 if (Node && obj instanceof Node) {26 return JSON.stringify('[DOM Node (' + obj.nodeName + ')]');27 }28 // class: RegExp29 if (RegExp && obj instanceof RegExp) {30 // turn into a string31 return JSON.stringify('[RegExp (' + obj.toString() + ')]');32 }33 // class: Error34 if (obj instanceof Error) {35 try {36 data.error = serializeError.parse(obj);37 } catch (e) {38 // iOS39 if (typeof obj.stack === 'string') {40 data.error = obj.stack.split('\n');41 }42 }43 return JSON.stringify(obj.name + ': ' + obj.message);44 }45 // class: ErrorEvent46 if (ErrorEvent && obj instanceof ErrorEvent) {47 // ErrorEvent has "filename", "lineno", "message" and possibly "column"/"colno" and "error"48 //49 // The w3c says "column" and has no "error" property.50 // The whatwg says "colno" and adds the "error" property, which is the thrown object.51 //52 // For more information about the insanity, read the two different specifications at:53 //54 // - http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#the-errorevent-interface55 // - http://www.w3.org/TR/html5/webappapis.html#the-errorevent-interface56 // - https://developer.mozilla.org/en-US/docs/Web/API/ErrorEvent57 data.filename = obj.filename;58 data.lineno = arg.lineno;59 data.colno = arg.colno || arg.column;60 if (obj.error) {61 data.error = serialize(obj.error);62 }63 return serialize(obj.message);64 }65 // array66 if (Array.isArray(obj)) {67 if (reflist.indexOf(obj) !== -1) {68 return JSON.stringify('[Circular reference]');69 }70 reflist.push(obj);71 return '[' + obj.map(serialize).join(',') + ']';72 }73 // object74 if (obj && typeof obj === 'object') {75 if (reflist.indexOf(obj) !== -1) {76 return JSON.stringify('[Circular reference]');77 }78 reflist.push(obj);79 var keys = Object.keys(obj);80 return '{' + keys.map(function (key) {81 return JSON.stringify(key) + ':' + serialize(obj[key]);82 }).join(',') + '}';83 }84 // scalar85 return JSON.stringify(obj);86 }87 return serialize(arg);88}89module.exports = function serializeArguments(args) {90 var len = args.length;91 var out = new Array(len);92 var data = {};93 for (var i = 0; i < len; i++) {94 var arg = args[i];95 if (typeof arg === 'string') {96 out[i] = arg;97 } else {98 out[i] = serializeArgument(args[i], data);99 }100 }101 var message = out.join(' ');102 if (Object.keys(data).length === 0) {103 data = null;104 }105 return { message: message, data: data };106};107/*****************108 ** WEBPACK FOOTER109 ** ./src/views/main/dofusProxy/clientLogger/serialize.js110 ** module id = 18111 ** module chunks = 0112 **/
command.js
Source: command.js
...75 var isBuffer = Buffer.isBuffer(parameter),76 argument = isBuffer ? parameter : String(parameter);77 if (!argument.length)78 {79 var bodyString = isBuffer ? '$0\r\n\r\n' : helpers.serializeArgument(argument);80 return bufferedWrites + socket.write(bodyString);81 }82 return bufferedWrites + socket.write('$' + argument.length + '\r\n') + socket.write(argument) + socket.write('\r\n');83 }, socket.write(commandHeader));...
worker.js
Source: worker.js
1"use strict";2Object.defineProperty(exports, "__esModule", {3 value: true4});5exports.Worker = void 0;6var _events = require("./events");7var _channelOwner = require("./channelOwner");8var _jsHandle = require("./jsHandle");9/**10 * Copyright (c) Microsoft Corporation.11 *12 * Licensed under the Apache License, Version 2.0 (the "License");13 * you may not use this file except in compliance with the License.14 * You may obtain a copy of the License at15 *16 * http://www.apache.org/licenses/LICENSE-2.017 *18 * Unless required by applicable law or agreed to in writing, software19 * distributed under the License is distributed on an "AS IS" BASIS,20 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.21 * See the License for the specific language governing permissions and22 * limitations under the License.23 */24class Worker extends _channelOwner.ChannelOwner {25 // Set for web workers.26 // Set for service workers.27 static from(worker) {28 return worker._object;29 }30 constructor(parent, type, guid, initializer) {31 super(parent, type, guid, initializer);32 this._page = void 0;33 this._context = void 0;34 this._channel.on('close', () => {35 if (this._page) this._page._workers.delete(this);36 if (this._context) this._context._serviceWorkers.delete(this);37 this.emit(_events.Events.Worker.Close, this);38 });39 }40 url() {41 return this._initializer.url;42 }43 async evaluate(pageFunction, arg) {44 (0, _jsHandle.assertMaxArguments)(arguments.length, 2);45 return this._wrapApiCall(async channel => {46 const result = await channel.evaluateExpression({47 expression: String(pageFunction),48 isFunction: typeof pageFunction === 'function',49 arg: (0, _jsHandle.serializeArgument)(arg)50 });51 return (0, _jsHandle.parseResult)(result.value);52 });53 }54 async evaluateHandle(pageFunction, arg) {55 (0, _jsHandle.assertMaxArguments)(arguments.length, 2);56 return this._wrapApiCall(async channel => {57 const result = await channel.evaluateExpressionHandle({58 expression: String(pageFunction),59 isFunction: typeof pageFunction === 'function',60 arg: (0, _jsHandle.serializeArgument)(arg)61 });62 return _jsHandle.JSHandle.from(result.handle);63 });64 }65}...
serializer.cjs
Source: serializer.cjs
...7 constructor (arg) {8 this.arg = arg9 }10 serialize () {11 return this.serializeArgument(this.arg)12 }13 serializeArgument (arg) {14 if (typeof arg == "object" && arg.constructor.apiMakerType == "BaseModel") {15 return {16 api_maker_type: "model",17 model_class_name: digg(arg.modelClassData(), "name"),18 model_id: arg.id()19 }20 } else if (typeof arg == "function" && arg.apiMakerType == "BaseModel") {21 return {22 api_maker_type: "resource",23 name: digg(arg.modelClassData(), "name")24 }25 } else if (arg instanceof Date) {26 let offsetNumber = parseInt((arg.getTimezoneOffset() / 60) * 100, 10)27 offsetNumber = -offsetNumber28 let offset = `${offsetNumber}`29 while (offset.length < 4) {30 offset = `0${offset}`31 }32 return {33 api_maker_type: "datetime",34 value: `${arg.getFullYear()}-${arg.getMonth() + 1}-${arg.getDate()} ${arg.getHours()}:${arg.getMinutes()}:${arg.getSeconds()}+${offset}`35 }36 } else if (Array.isArray(arg)) {37 return this.serializeArray(arg)38 } else if (typeof arg == "object" && arg.constructor && arg.constructor.apiMakerType == "Collection") {39 return {40 api_maker_type: "collection",41 value: this.serializeObject(arg)42 }43 } else if (typeof arg == "object" && arg !== null && arg.constructor.name == "Object") {44 return this.serializeObject(arg)45 } else {46 return arg47 }48 }49 serializeArray (arg) {50 return arg.map((value) => this.serializeArgument(value))51 }52 serializeObject (arg) {53 const newObject = {}54 for (const key in arg) {55 const value = arg[key]56 const newValue = this.serializeArgument(value)57 const newKey = this.serializeArgument(key)58 newObject[newKey] = newValue59 }60 return newObject61 }...
execute.js
Source: execute.js
...13 query: repr.serialize(repr),14 binds: {}15 };16 } else if (isArgument(fragment)) {17 let value = serializeArgument(args, fragment);18 /**19 * Have to re-execute the argument's resolved value, because it could be a string20 * or another fragment or anything really.21 */22 value = execute(value).query;23 return {24 query: value,25 binds: {}26 };27 } else if (typeof fragment === "string") {28 return {29 query: SqlString.escapeId(fragment),30 binds: {}31 };...
helpers.js
Source: helpers.js
...5 var deferred = P.defer();6 setTimeout(deferred.resolve, milliseconds);7 return deferred.promise;8};9exports.serializeArgument = function serializeArgument(argument)10{11 var value = String(argument),12 length = Buffer.byteLength(value);13 return '$' + length + '\r\n' + value + '\r\n';14};15exports.decodeBuffers = function decodeBuffers(reply)16{17 if (Buffer.isBuffer(reply))18 return String(reply);19 if (Array.isArray(reply))20 return _.map(reply, decodeBuffers);21 return reply;22};23exports.rejectQueueWith = function rejectQueueWith(queue, message)...
Using AI Code Generation
1const { serializeArgument } = require('playwright/lib/client/helper');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const page = await browser.newPage();6})();7const { serializeArgument } = require('playwright/lib/client/helper');8const { chromium } = require('playwright');9(async () => {10 const browser = await chromium.launch();11 const page = await browser.newPage();12 console.log(serializeArgument({foo: 'bar', baz:
Using AI Code Generation
1const { serializeArgument } = require('playwright/lib/client/serializers');2const { serializeArgument } = require('playwright/lib/client/serializers');3const args = serializeArgument({4 corge: Symbol('test'),5 grault: new Date(0),6 waldo: ['foo', 42, true, null, undefined, Symbol('test'), new Date(0), /foo/],7 fred: {8 corge: Symbol('test'),9 grault: new Date(0),10 },11});12console.log(args);13const { serializeArgument } = require('playwright/lib/client/serializers');14const args = serializeArgument({15 corge: Symbol('test'),16 grault: new Date(0),17 waldo: ['foo', 42, true, null, undefined, Symbol('test'), new Date(0), /foo/],18 fred: {
Using AI Code Generation
1const path = require('path');2const playwright = require('playwright');3const { serializeArgument } = require('playwright/lib/server/serializers');4const { convertPlaywrightOptions } = require('playwright/lib/server/converters');5const options = {6 executablePath: path.join(__dirname, 'chrome-win', 'chrome.exe'),7};8const browserOptions = convertPlaywrightOptions(options, 'chromium');9const browser = await playwright.chromium.launch(browserOptions);10const page = await browser.newPage();11const elementHandle = await page.$('h1');12const serializedArgument = serializeArgument(elementHandle);13console.log(serializedArgument);14await browser.close();15Error: Protocol error (Runtime.callFunctionOn): Cannot find context with specified id16const browser = await playwright.chromium.launch(browserOptions);17const context = await browser.newContext();18const page = await context.newPage();19const elementHandle = await page.$('h1');20const serializedArgument = serializeArgument(elementHandle);21const result = await page.evaluateHandle((element) => {22 return element;23}, serializedArgument);24await browser.close();25Error: Protocol error (Runtime.callFunctionOn): Cannot find context with specified id26const browser = await playwright.chromium.launch(browserOptions);27const context = await browser.newContext();28const page = await context.newPage();29const elementHandle = await page.$('h1');30const serializedArgument = serializeArgument(elementHandle);
Using AI Code Generation
1const { serializeArgument } = require('playwright/lib/server/serializers/serializers');2const { Page } = require('playwright/lib/server/page');3const { ElementHandle } = require('playwright/lib/server/dom');4const { JSHandle } = require('playwright/lib/server/jsHandle');5const { Frame } = require('playwright/lib/server/frames');6const page = new Page();7const frame = new Frame(page, 'frameId', 'frameName');8const elementHandle = new ElementHandle(frame, 'elementHandleId', 'elementHandleName');9const jsHandle = new JSHandle(frame, 'jsHandleId', 'jsHandleName');10const serializedElementHandle = serializeArgument(elementHandle);11const serializedJsHandle = serializeArgument(jsHandle);12console.log(serializedElementHandle);13console.log(serializedJsHandle);14const { serializeArgument } = require('playwright/lib/server/serializers/serializers');15const { Page } = require('playwright/lib/server/page');16const { ElementHandle } = require('playwright/lib/server/dom');17const { JSHandle } = require('playwright/lib/server/jsHandle');18const { Frame } = require('playwright/lib/server/frames');19const page = new Page();20const frame = new Frame(page, 'frameId', 'frameName');21const elementHandle = new ElementHandle(frame, 'elementHandleId', 'elementHandleName');22const jsHandle = new JSHandle(frame, 'jsHandleId', 'jsHandleName');23const serializedElementHandle = serializeArgument(elementHandle);24const serializedJsHandle = serializeArgument(jsHandle);25console.log(serializedElementHandle);26console.log(serializedJsHandle);
Using AI Code Generation
1const { serializeArgument } = require('playwright/lib/server/frames');2const arg = { foo: 'bar' };3const result = serializeArgument(arg, 'main');4console.log(result);5{ guid: 'main',6 { type: 'object',7 objectId: '{"injectedScriptId":1,"id":1}',8 { type: 'object',9 entries: [] } } }10const { serializeArgument } = require('playwright/lib/server/frames');11const arg = () => console.log('Hello World');12const result = serializeArgument(arg, 'main');13console.log(result);14{ guid: 'main',15 { type: 'function',16 description: '() => console.log(\'Hello World\')',17 objectId: '{"injectedScriptId":1,"id":2}' } }18const { serializeArgument } = require('playwright/lib/server/frames');19const arg = {20 bar: () => console.log('Hello World')21};22const result = serializeArgument(arg, 'main');23console.log(result);24{ guid: 'main',25 { type: 'object',26 objectId: '{"injectedScriptId":1,"id":3}',27 { type: '
StackOverFlow community discussions
Questions
Discussion
How to run a list of test suites in a single file concurrently in jest?
Is it possible to get the selector from a locator object in playwright?
firefox browser does not start in playwright
Running Playwright in Azure Function
Jest + Playwright - Test callbacks of event-based DOM library
firefox browser does not start in playwright
Assuming you are not running test with the --runinband flag, the simple answer is yes but it depends ????
There is a pretty comprehensive GitHub issue jest#6957 that explains certain cases of when tests are run concurrently or in parallel. But it seems to depend on a lot of edge cases where jest tries its best to determine the fastest way to run the tests given the circumstances.
To my knowledge there is no way to force jest to run in parallel.
Aside
Have you considered using playwright instead of puppeteer with jest? Playwright has their own internally built testing library called @playwright/test that is used in place of jest with a similar API. This library allows for explicitly defining test groups in a single file to run in parallel (i.e. test.describe.parallel) or serially (i.e. test.describe.serial). Or even to run all tests in parallel via a config option.
// parallel
test.describe.parallel('group', () => {
test('runs in parallel 1', async ({ page }) => {});
test('runs in parallel 2', async ({ page }) => {});
});
// serial
test.describe.serial('group', () => {
test('runs first', async ({ page }) => {});
test('runs second', async ({ page }) => {});
});
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Playwright tutorial
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Chapters:
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