How to use updateContextProvider method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactFiberBeginWork.js

Source: ReactFiberBeginWork.js Github

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...26 }27 reconcileChildren(current, workInProgress, nextChildren);28 return workInProgress.child29}30function updateContextProvider(current$$1, workInProgress) {31 var providerType = workInProgress.type;32 var context = providerType._context;33 var newProps = workInProgress.pendingProps;34 var oldProps = workInProgress.memoizedProps;35 var newValue = newProps.value;36 /​/​ pushProvider(workInProgress, newValue);37 context._currentValue = newValue;38 if (oldProps !== null) {39 /​/​ var oldValue = oldProps.value;40 /​/​ var changedBits = calculateChangedBits(context, newValue, oldValue);41 /​/​ if (changedBits === 0) {42 /​/​ /​/​ No change. Bailout early if children are the same.43 /​/​ if (oldProps.children === newProps.children && !hasContextChanged()) {44 /​/​ return bailoutOnAlreadyFinishedWork(current$$1, workInProgress);45 /​/​ }46 /​/​ } else {47 /​/​ /​/​ The context value changed. Search for matching consumers and schedule48 /​/​ /​/​ them to update.49 /​/​ propagateContextChange(workInProgress, context, changedBits);50 /​/​ }51 }52 var newChildren = newProps.children;53 reconcileChildren(current$$1, workInProgress, newChildren);54 return workInProgress.child;55 }56function updateFunctionComponent(current, workInProgress, Component) {57 /​/​ /​/​同一个组件中多次调用hook58 const nextChildren = renderWithHooks(workInProgress, Component);59 reconcileChildren(current, workInProgress, nextChildren);60 return workInProgress.child61}62function updateHostComponent(current, workInProgress) {63 /​/​ DOM节点名64 const type = workInProgress.type;65 const prevProps = current ? current.memoizedProps : null;66 const nextProps = workInProgress.pendingProps;67 let nextChildren = nextProps.children;68 /​/​debugger69 reconcileChildren(current, workInProgress, nextChildren);70 return workInProgress.child71}72/​/​文本节点无子节点73function updateHostText(current, workInProgress) {74 return null75}76function beginWork(current, workInProgress) {77 /​/​mount阶段78 switch (workInProgress.tag) {79 /​/​跟Fiber80 case HostRoot:81 return updateHostRoot(current, workInProgress);82 /​/​function component83 case IndeterminateComponent:84 const Component = workInProgress.type;85 return updateFunctionComponent(86 current,87 workInProgress,88 Component89 );90 case HostComponent:91 return updateHostComponent(current, workInProgress);92 case HostText:93 return updateHostText(current, workInProgress);94 case ContextProvider:95 return updateContextProvider(current, workInProgress);96 default:97 break;98 }99}...

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ContextExample.jsx

Source: ContextExample.jsx Github

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1import * as React from "react";2const { Fragment } = React;3/​*4 This example demonstrates how React will not call render on components between5 a Context.Provider and Context.Consumer but still traverses down the tree6 performing work.7 Examining the logs of pressing Toggle show that "rendering MyChild" and8 "rendering Time" are never logged when the only update is a Provider change,9 but the ReactTracer still calls "performUnitOfWork" on fibers between the10 Provider and Consumer. Most of these intermediate fibers bailout since props11 haven't changed (1). Fibers that aren't between the Provider and Consumer12 return null in beginWork so their subtree is skipped (no child update is13 scheduled) (2) while Fibers between the Provider and Consumer do return their14 child since one of their children has an update scheduled (3).15 (1) https:/​/​github.com/​facebook/​react/​blob/​b4f119cdf1defe2437e00022f670c6ef818cd43f/​packages/​react-reconciler/​src/​ReactFiberBeginWork.new.js#L325216 (2) https:/​/​github.com/​facebook/​react/​blob/​b4f119cdf1defe2437e00022f670c6ef818cd43f/​packages/​react-reconciler/​src/​ReactFiberBeginWork.new.js#L314017 (3) https:/​/​github.com/​facebook/​react/​blob/​b4f119cdf1defe2437e00022f670c6ef818cd43f/​packages/​react-reconciler/​src/​ReactFiberBeginWork.new.js#L314718*/​19/​*20 # To investigate:21 ## How React propagates context value changes22 Relevant files and functions:23 - updateContextProvider24 Called when a Provider is rendered25 https:/​/​github.com/​facebook/​react/​blob/​46a0f050aacd8b2159b8db99b599a4b69e682189/​packages/​react-reconciler/​src/​ReactFiberBeginWork.new.js#L311426 - pushProvider27 Not sure what this does yet28 https:/​/​github.com/​facebook/​react/​blob/​46a0f050aacd8b2159b8db99b599a4b69e682189/​packages/​react-reconciler/​src/​ReactFiberNewContext.new.js#L8729 - propagateContextChange30 Actually marks dirty context consumers, though not when LazyContextPropagation is on31 https:/​/​github.com/​facebook/​react/​blob/​46a0f050aacd8b2159b8db99b599a4b69e682189/​packages/​react-reconciler/​src/​ReactFiberNewContext.new.js#L16932 Current experiment to change the behavior:33 PR: https:/​/​github.com/​facebook/​react/​pull/​2089034 RFC: https:/​/​github.com/​reactjs/​rfcs/​pull/​11835*/​36const ctx = React.createContext(null);37class MyProvider extends React.Component {38 constructor(props) {39 super(props);40 this.state = { value: 0 };41 }42 toggle() {43 this.setState(({ value }) => ({ value: (value + 1) % 2 }));44 }45 render() {46 console.log("rendering MyProvider");47 return (48 <Fragment>49 <div>50 <button onClick={() => this.toggle()}>Toggle</​button>51 </​div>52 <ctx.Provider value={this.state.value}>53 {this.props.children}54 </​ctx.Provider>55 </​Fragment>56 );57 }58}59const Time = () => {60 console.log("Rendering Time");61 return <div>{Date.now()}</​div>;62};63const MyChild = () => {64 console.log("rendering MyChild");65 return (66 <Fragment>67 {Date.now()}68 <Time /​>69 <ctx.Consumer>70 {(value) => {71 return <p>{value}</​p>;72 }}73 </​ctx.Consumer>74 <Time /​>75 </​Fragment>76 );77};78export function ContextExample() {79 console.log("rendering ContentExample");80 return (81 <Fragment>82 <h2>Context Example</​h2>83 <MyProvider>84 <MyChild /​>85 </​MyProvider>86 </​Fragment>87 );...

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UpdateContext.js

Source: UpdateContext.js Github

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1import {createContext, useState } from 'react'2export const UpdateContext = createContext()3const UpdateContextProvider = (props) => {4 const [ newElement, setNewElement ] = useState(false)5 return(6 <UpdateContext.Provider value={{7 newElement, setNewElement8 }}>9 { props.children }10 </​UpdateContext.Provider>11 )12}...

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index.js

Source: index.js Github

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1import React from 'react';2import ReactDOM from 'react-dom';3import './​index.css';4import App from './​App';5import UpdateContextProvider from "./​context/​UpdateContext"6ReactDOM.render(7 <React.StrictMode>8 <UpdateContextProvider>9 <App /​>10 </​UpdateContextProvider>11 </​React.StrictMode>,12 document.getElementById('root')...

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App.js

Source: App.js Github

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1import UpdateContextProvider from "./​context/​UpdateContext";2import ListOfEmployee from './​ListOfEmployee'3function App() {4 return (5 <div>6 <UpdateContextProvider>7 <ListOfEmployee /​>8 </​UpdateContextProvider>9 </​div>10 );11}...

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Using AI Code Generation

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1const { updateContextProvider } = require('playwright/​lib/​server/​browserContext');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 await updateContextProvider(context, 'test', () => 'test');7 const page = await context.newPage();8 const result = await page.evaluate(() => {9 const { test } = window.playwright;10 return test;11 });12 console.log(result);13 await browser.close();14})();

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Using AI Code Generation

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1const { updateContextProvider } = require('playwright/​lib/​server/​browserContext');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 await updateContextProvider(context, 'test', () => 'test');7 const page = await context.newPage();8 const result = await page.evaluate(() => {9 const { test } = window.playwright;10 return test;11 });12 console.log(result);13 await browser.close();14})();

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Using AI Code Generation

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1const { updateContextProvider } = require('playwright-core/​lib/​server/​browserContext');2const { chromium } = require('playwright-core');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 await updateContextProvider(context, 'test', () => {7 return {8 async run() {9 return 'test';10 }11 };12 });13 const page = await context.newPage();ice. The only currently supp

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Using AI Code Generation

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1const { updateContextProvider } = require('playwright/​lib/​server/​browserContext');2const { chromium } = require('playwright');3const browser = await chromium.launch();4const context = await browser.newContext();5await updateContextProvider(context, 'mock', { ... });6await context.close();7const { chromium } = require('playwright');8const { expect } = require('chai');9describe('Playwright Mock', function () {10 it('should mock response', async function () {11 const browser = await chromium.launch();12 const context = await browser.newContext();13 await context.route('**/​*', (route) => {14 route.fulfill({15 });16 });17 const page = await context.newPage();18 const title = await page.title();19 expect(title).to.equal('Mocked Response');20 await context.close();21 });22});

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Using AI Code Generation

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1const { updateContextProvider } = require('@playwright/​test/​lib/​server/​context');2const { updateBrowserProvider } = require('@playwright/​test/​lib/​server/​browser');3const { updatePlaywright } = require('@playwright/​test/​lib/​server/​playwright');4const { updateTestServer } = require('@playwright/​test/​lib/​server/​testServer');5const { updateLauncher } = require('@playwright/​test/​lib/​server/​launcher');6const { updateDeviceDescriptors } = require('@playwright/​test/​lib/​server/​deviceDescriptors');7const { updateChromium } = require('@playwright/​test/​lib/​server/​chromium');8const { updateFirefox } = require('@playwright/​test/​lib/​server/​firefox');9const { updateWebkit } = require('@playwright/​test/​lib/​server/​webkit');10const { updateTraceViewr } =require('@playwright/​test/​lib/​server/​traceViewer');11cst { updateTraceMode } = require('@plawright/​test/​lib/​server/​traceModel');12const{ updateTraeViewerApp } = reqire('@playwright/​test/​lib/​sever/​traceViewerApp');13const { updateTraceViewerPage } = require('@plawright/​test/​lib/​server/​traceViewerPage');14const { updateTraceViewerTracePage } = require('@playwright/​test/​lib/​server/​traceViewerTracePage');15const { updateTraceViewerEvents } = require('@playwright/​test/​lib/​server/​traceViewerEvents');16const{ updateTraceViewerEventDetail } = reqire('@laywright/​test/​lib/​server/​traceViewerEventDetails');17 const result = await page.evaluate(() => {18 return window.playwrightTest();19 });20const {og(resulontextProvider } = require('@playwright/​test/​lib/​server/​ct);');21cost { updateBrowserProvider } = require('@plywright/​test/​ib/​server/​browser');22const { updatePlaywright } = require('@playwright/​test/​lib/​server/​playwright');23const { updateTestServer } = require('@playwright/​test/​lib/​server/​testServer');24const { updateLauncher } = require('@playwright/​test/​lib/​server/​launcher');25const { updateDeviceDescriptors } = require('@playwright/​test/​lib/​server/​deviceDescriptors');26const { updateChromium } = require('@playwright/​test/​lib/​server/​chromium');27const { updateFirefox } = require('@playwright/​test/​lib/​server/​firefox');28const { updateWebkit } = require('@playwright/​test/​lib/​server/​webkit');29const { updateTraceViewer } = require('@playwright/​test/​lib/​server/​traceViewer');30const { updateTraceModel } = require('@playwright/​test/​lib/​server/​traceModel');31const { updateTraceViewerApp } = require('@playwright/​test/​lib/​server/​traceViewerApp');32})();updateTraeViewerPage } = require('@playwrigt/​test/​lib/​server/​traceViewePage');33const { updateTraceViewerTracePage } = require('@playwright/​test/​lib/​server/​traceVewerTracePage');34const { updateTraceViewerEvents@t/​test/​lib/​server/​traceViewerEvens35const { updateTraceViewerEventDetails } = require'@playwright/​test/​lib/​server/​traceViewerEventDetils');

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Using AI Code Generation

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1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch();4 const page = await browser.newPage();5 await page.context().updateContextProvider({6 async provide() {7 return { bar: 'baz' };8 },9 });10 const { bar } = await page.evaluate(() => window.context.foo);11 console.log(bar);12 await browser.close();13})();14const { chromium } = require('playwright');15(async () => {16 const browser = await chromium.launch();17 const page = await browser.newPage();18 await page.context().updateContextProvider({19 async provide() {20 return { bar: 'baz' };21 },22 });23 await page.context().updateContextProvider({ name: 'foo' });24 const { bar } = await page.evaluate(() => window.context.foo);25 console.log(bar);26 await browser.close();27})();

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Using AI Code Generation

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1const { updateContextProvider } = require('playwright/​lib/​server/​chromium');2updateContextProvider('chromium', (context, options) => {3});4const { chromium } = require('playwright');5const { updateContextProvider } = require('playwright/​lib/​server/​chromium');6updateContextProvider('chromium', (context, options) => {7});8const browser = await chromium.launch();9const context = await browser.newContext();

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Using AI Code Generation

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1const { _electron, _chromium, _firefox } = require('playwright');2const context = await _electron.launchPersistentContext("path/​to/​user/​data/​dir");3const page = await contxt.newPage();4awaitontext.updteContextProvider({5 async setCookies(cookies) {6 consoe.og("stCookies");7 },8 async clearCookies() {9 console.log("clearCookies");10 },11 async setGeolocation(geolocation) {12 console.log("setGeolocation");13 },14 async clearGeolocation() {15 console.log("clearGeolocation");16 },17 async setExtraHTTPHeaers(headers){18 console.log("setExtraHTTPHeaders");19 },20 async setOfline(offline) {21 console.log("setOffline");22 },23 async setHTTPCedentials(httpCredentials) {24 cnsole.log("setHTTPCredentials");25 },26 async addInitScript(script) {27 console.log("addInitScript");28 },29 async clearInitScripts() {30 console.log("clearInitScripts");31 },32 async close() {33 console.log("close");34 },35});36const { electron } = require('plawright');37const context = aait electron.launchPersistentContext("pat/​to/​user/​data/​dir");38const page = await context.newPage();39await context.updateContextProvider({40 async setCookies(cookies) {41 console.log("setCookies");42 },43 async clearCookies() {44 console.log("clearCookies");45 },46 async setGeolocation(geolocation) {47 console.log("setGeolocation");48 },49 async claGolocation() {50 console.log("clearGeolocaton");51 },52 asycsetExraHTTPHeaders(eadrs) {53 console.log("setExraHTTPHeadrs");54 },55 async eOffline(offline) {56 console.log("setOfline");57 },58 async setHTTPCredentials(httpCredentials) {59 console.log("setHTTPCredentials");60 },61 async addInitScript(script) {62 console.log("addInitScript");63 },64 async clearInitScripts() {65 console.log("clearInitScrpts");66 },67 async close() {68 console.log("cos");69 },70});71await browser.close();

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Using AI Code Generation

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1const { updateContextProvider } = require('playwright/​lib/​client/​frames');2updateContextProvider(async (context) => {3 return {4 };5});6const { test, expect } = require('@playwright/​test');7test('test', async ({ page }) => {8});9const { test } = require('@playwright/​test');10test.use({11 async contextOptions(contextOptions) {12 return {13 };14 },15});

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Using AI Code Generation

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1const { updateContextProvider } = require('@playwright/​test');2updateContextProvider({3 options: {4 },5 fixtures: {6 myContextFixture: async ({ context }, run) => {7 await run(context);8 },9 },10});11const { test, expect } = require('@playwright/​test');12test.describe('My test suite', () => {13 test('My test', async ({ myContextFixture }) => {14 });15});16const { test, expect } = require('@playwright/​test');17test('test', async ({ page }) => {18});19The above code will work in Playwright 1.0.2. The test.use() method is the recommended way to extend the context object. The test.use() method is a method of the test object. The test.use() method is used to register a hook function that can be used to extend the context object. The test.use() method takes a single object as an argument. The object can have the following properties:20The test.use() method is a method of the test object. The test.use() method can be called from anywhere in the test file

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Using AI Code Generation

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1const { updateContextProvider } = require('@playwright/​test');2updateContextProvider({3 options: {4 },5 fixtures: {6 myContextFixture: async ({ context }, run) => {7 await run(context);8 },9 },10});11const { test, expect } = require('@playwright/​test');12test.describe('My test suite', () => {13 test('My test', async ({ myContextFixture }) => {14 });15});

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Using AI Code Generation

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1const { updateContextProvider } = require('playwright-core/​lib/​server/​browserContext');2const { chromium } = require('playwright-core');3updateContextProvider(() => chromium.launch().then(browser => browser.newContext()));4const { test, expect } = require('@playwright/​test');5test('test', async ({ page }) => {6 const title = page.locator('text=Playwright');7 expect(await title.isVisible()).toBe(true);8});9const { test, expect } = require('@playwright/​test');10test('test', async ({ page }) => {11 const title = page.locator('text=Playwright');12 expect(await title.isVisible()).toBe(true);13});

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StackOverFlow community discussions

Questions
Discussion

Jest + Playwright - Test callbacks of event-based DOM library

firefox browser does not start in playwright

Is it possible to get the selector from a locator object in playwright?

How to run a list of test suites in a single file concurrently in jest?

Running Playwright in Azure Function

firefox browser does not start in playwright

This question is quite close to a "need more focus" question. But let's try to give it some focus:

Does Playwright has access to the cPicker object on the page? Does it has access to the window object?

Yes, you can access both cPicker and the window object inside an evaluate call.

Should I trigger the events from the HTML file itself, and in the callbacks, print in the DOM the result, in some dummy-element, and then infer from that dummy element text that the callbacks fired?

Exactly, or you can assign values to a javascript variable:

const cPicker = new ColorPicker({
  onClickOutside(e){
  },
  onInput(color){
    window['color'] = color;
  },
  onChange(color){
    window['result'] = color;
  }
})

And then

it('Should call all callbacks with correct arguments', async() => {
    await page.goto(`http://localhost:5000/tests/visual/basic.html`, {waitUntil:'load'})

    // Wait until the next frame
    await page.evaluate(() => new Promise(requestAnimationFrame))

    // Act
   
    // Assert
    const result = await page.evaluate(() => window['color']);
    // Check the value
})
https://stackoverflow.com/questions/65477895/jest-playwright-test-callbacks-of-event-based-dom-library

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