How to use resolveAsyncComponent method in Playwright Internal

Best JavaScript code snippet using playwright-internal

vue_component_async.js

Source: vue_component_async.js Github

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...54 /​/​ 如果当前传入的 Ctor 即不普通对象,也不是包含 Ctor.cid 的组件构造器,那就当作异步组件函数解析55 var asyncFactory;56 if (isUndef(Ctor.cid)) {57 asyncFactory = Ctor;58 Ctor = resolveAsyncComponent(asyncFactory, baseCtor);59 /​/​ resolveAsyncComponent 函数异步处理异步组件的加载,除高级异步组件返回 LoadingComp 组件外,其它情形都返回 undefined,所以会执行下面代码创建一个注释节点占位符60 if (Ctor === undefined) {61 /​/​ return a placeholder node for async component, which is rendered62 /​/​ as a comment node but preserves all the raw information for the node.63 /​/​ the information will be used for async server-rendering and hydration.64 return createAsyncPlaceholder(65 asyncFactory,66 data,67 context,68 children,69 tag70 )71 }72 }...

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resolve-async-component.js

Source: resolve-async-component.js Github

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1/​* @flow */​2import {3 warn,4 once,5 isDef,6 isUndef,7 isTrue,8 isObject,9 hasSymbol,10 isPromise,11 remove12} from 'core/​util/​index'13import { createEmptyVNode } from 'core/​vdom/​vnode'14import { currentRenderingInstance } from 'core/​instance/​render'15function ensureCtor (comp: any, base) {16 if (17 comp.__esModule ||18 (hasSymbol && comp[Symbol.toStringTag] === 'Module')19 ) {20 comp = comp.default21 }22 return isObject(comp)23 ? base.extend(comp)24 : comp25}26export function createAsyncPlaceholder (27 factory: Function,28 data: ?VNodeData,29 context: Component,30 children: ?Array<VNode>,31 tag: ?string32): VNode {33 const node = createEmptyVNode()34 node.asyncFactory = factory35 node.asyncMeta = { data, context, children, tag }36 return node37}38export function resolveAsyncComponent (39 factory: Function,40 baseCtor: Class<Component>41): Class<Component> | void {42 /​/​ 当异步组件加载失败会执行 reject 函数43 /​/​ 这个时候会把 factory.error 设置为 true44 /​/​ 同时执行 forceRender() 再次执行到 resolveAsyncComponent 45 /​/​ 那么这个时候就返回 factory.erorrCom46 if (isTrue(factory.error) && isDef(factory.errorComp)) {47 return factory.errorComp48 }49 /​/​ 直接返回渲染成功加载的组件50 if (isDef(factory.resolved)) {51 return factory.resolved52 }53 const owner = currentRenderingInstance54 if (owner && isDef(factory.owners) && factory.owners.indexOf(owner) === -1) {55 /​/​ already pending56 factory.owners.push(owner)57 }58 /​/​ 如果异步组件加载中并未返回 会走到这个逻辑59 /​/​ 返回 factory.loadingCom 渲染 loading 组件60 if (isTrue(factory.loading) && isDef(factory.loadingComp)) {61 return factory.loadingComp62 }63 if (owner && !isDef(factory.owners)) {64 const owners = factory.owners = [owner]65 let sync = true66 let timerLoading = null67 let timerTimeout = null68 ;(owner: any).$on('hook:destroyed', () => remove(owners, owner))69 const forceRender = (renderCompleted: boolean) => {70 /​/​ 调用 watcher 的 update 方法让渲染 watcher 对应的回调函数执行,也就触发了组件的重新渲染71 /​/​ 之所以这么做是因为 Vue 通常是数据驱动视图重新渲染,但是在整个异步组件加载过程中是没有数据发生变化72 /​/​ 所以通过 $forceUpdate 可以强制组件重新渲染一次73 for (let i = 0, l = owners.length; i < l; i++) {74 (owners[i]: any).$forceUpdate()75 }76 if (renderCompleted) {77 owners.length = 078 if (timerLoading !== null) {79 clearTimeout(timerLoading)80 timerLoading = null81 }82 if (timerTimeout !== null) {83 clearTimeout(timerTimeout)84 timerTimeout = null85 }86 }87 }88 const resolve = once((res: Object | Class<Component>) => {89 /​/​ cache resolved90 /​/​ 异步组件加载成功 缓存到 factory.resolved 中91 /​/​ 执行 forceRender 又会执行到 resolveAsyncComponent 中92 factory.resolved = ensureCtor(res, baseCtor)93 /​/​ invoke callbacks only if this is not a synchronous resolve94 /​/​ (async resolves are shimmed as synchronous during SSR)95 if (!sync) {96 forceRender(true)97 } else {98 owners.length = 099 }100 })101 const reject = once(reason => {102 process.env.NODE_ENV !== 'production' && warn(103 `Failed to resolve async component: ${String(factory)}` +104 (reason ? `\nReason: ${reason}` : '')105 )106 if (isDef(factory.errorComp)) {107 factory.error = true108 forceRender(true)109 }110 })111 const res = factory(resolve, reject)112 if (isObject(res)) {113 if (isPromise(res)) {114 /​/​ () => Promise115 if (isUndef(factory.resolved)) {116 res.then(resolve, reject)117 }118 } else if (isPromise(res.component)) {119 /​/​ 高级异步组件120 res.component.then(resolve, reject)121 /​/​ 先判断是否定义 error 组件 有的话赋值给 factory.errorComp122 if (isDef(res.error)) {123 factory.errorComp = ensureCtor(res.error, baseCtor)124 }125 /​/​ 接着在判断 res.loading 是否定义了 loading 组件 有的话赋值给 factory.loadingComp126 if (isDef(res.loading)) {127 factory.loadingComp = ensureCtor(res.loading, baseCtor)128 if (res.delay === 0) {129 factory.loading = true130 } else {131 timerLoading = setTimeout(() => {132 timerLoading = null133 if (isUndef(factory.resolved) && isUndef(factory.error)) {134 factory.loading = true135 forceRender(false)136 }137 }, res.delay || 200)138 }139 }140 /​/​ 如果配置了该项 在 res.timeout 时间后 如果组件没有成功加载141 /​/​ 执行 reject142 if (isDef(res.timeout)) {143 timerTimeout = setTimeout(() => {144 timerTimeout = null145 if (isUndef(factory.resolved)) {146 reject(147 process.env.NODE_ENV !== 'production'148 ? `timeout (${res.timeout}ms)`149 : null150 )151 }152 }, res.timeout)153 }154 }155 }156 sync = false157 /​/​ return in case resolved synchronously158 /​/​ 如果 delay 配置为0 则首次直接渲染 loading 组件 159 /​/​ 否则延时 delay 执行 forceRender 那么又会在一次执行到 resolveAsyncComponent160 return factory.loading161 ? factory.loadingComp162 : factory.resolved163 }...

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create-component.js

Source: create-component.js Github

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...17 if (isUndef(Ctor.cid)) {18 /​/​ console.log('Ctor.cid---', Ctor.toString())19 /​/​ debugger20 asyncFactory = Ctor21 Ctor = resolveAsyncComponent(asyncFactory, baseCtor)22 /​/​ debugger23 if (Ctor === undefined) {24 return createAsyncPlaceholder(25 asyncFactory,26 data,27 context,28 children,29 tag30 )31 }32 }33 if (isTrue(Ctor.options.functional)) {34 /​/​ debugger35 return createFunctionalComponent(Ctor, data, context, children)...

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util.js

Source: util.js Github

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...29 })30 }, 0)31 }32 }33 util.resolveAsyncComponent(handler, function (Component) {34 expect(Component.options.template).toBe('hi')35 done()36 })37 })38 it('getRouteConfig', function () {39 expect(util.getRouteConfig({}, 'data')).toBeUndefined()40 expect(util.getRouteConfig({ options: { route: {}}}, 'data')).toBeUndefined()41 expect(util.getRouteConfig({ options: { route: { data: 1 }}}, 'data')).toBe(1)42 expect(util.getRouteConfig({ $options: { route: {}}}, 'data')).toBeUndefined()43 expect(util.getRouteConfig({ $options: { route: { data: 1 }}}, 'data')).toBe(1)44 })...

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async-component.html.4ef42ad0.js

Source: async-component.html.4ef42ad0.js Github

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1const data = {2 "key": "v-29e7bb95",3 "path": "/​vue/​source-study/​component/​async-component.html",4 "title": "\u5F02\u6B65\u7EC4\u4EF6",5 "lang": "en-US",6 "frontmatter": {},7 "excerpt": "",8 "headers": [9 {10 "level": 2,11 "title": "\u5F02\u6B65\u7EC4\u4EF6\u7684\u51E0\u79CD\u5F62\u5F0F",12 "slug": "\u5F02\u6B65\u7EC4\u4EF6\u7684\u51E0\u79CD\u5F62\u5F0F",13 "children": []14 },15 {16 "level": 2,17 "title": "\u5904\u7406\u5F02\u6B65\u7EC4\u4EF6",18 "slug": "\u5904\u7406\u5F02\u6B65\u7EC4\u4EF6",19 "children": [20 {21 "level": 3,22 "title": "resolveAsyncComponent",23 "slug": "resolveasynccomponent",24 "children": []25 },26 {27 "level": 3,28 "title": "\u5F02\u6B65\u5360\u4F4D\u6CE8\u91CA Vnode",29 "slug": "\u5F02\u6B65\u5360\u4F4D\u6CE8\u91CA-vnode",30 "children": []31 }32 ]33 },34 {35 "level": 2,36 "title": "\u603B\u7ED3",37 "slug": "\u603B\u7ED3",38 "children": []39 }40 ],41 "filePathRelative": "vue/​source-study/​component/​async-component.md"42};...

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Using AI Code Generation

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1const { resolveAsyncComponent } = require('playwright/​lib/​server/​browserContext');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 const component = await resolveAsyncComponent(page, 'text=Get started');8 await component.click();9 await browser.close();10})();

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Using AI Code Generation

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1const { resolveAsyncComponent } = require('playwright/​lib/​server/​browserContext');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 const component = await resolveAsyncComponent(page, 'text=Get started');8 await component.click();9 await browser.close();10})();

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Using AI Code Generation

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1const { resolveAsyncComponent } = require('playwright-core/​lib/​server/​common/​resolveAsyncComponent');2const { Page } = require('playwright-core/​lib/​server/​page');3const { BrowserContext } = require('playwright-core/​lib/​server/​browserContext');4const { Browser } = require('playwright-core/​lib/​server/​browser');5const { chromium } = require('playwright-core');6function test() {7 const browser = chromium.launch();8 const context = browser.newContext();9 const page = context.newPage();10 resolveAsyncComponent(page, 'Page', 'evaluate', '() => 42').then(console.log);11 resolveAsyncComponent(context, 'BrowserContext', 'newPage').then((page) => {12 resolveAsyncComponent(page, 'Page', 'evaluate', '() => 42').then(console.log);13 });14 resolveAsyncComponent(browser, 'Browser', 'newContext').then((context) => {15 resolveAsyncComponent(context, 'BrowserContext', 'newPage').then((page) => {16 resolveAsyncComponent(page, 'Page', 'evaluate', '() => 42').then(console.log);17 });18}19test();20const { resolveAsyncComponent } require('playwright-core/​lib/​server/​common/​resolveAsyncComponent');21const { chromium } require('playwright-core');22function test() {23 const browser chromium.launch();24 const context browser.newContext();25 const page context.newPage();26 resolveAsyncComponent(page, 'Page', 'evaluate', '() => 42').then(console.log);27 resolveAsyncComponent(context, 'BrowserContext', 'newPage').then((page) > {28 resolveAsyncComponent(page, 'Page', 'evaluate', '() > 42').then(console.log);29 resolveAsyncComponent(browser, 'Browser', 'newContext').then((context) => {30 resolveAsyncComponent(context, 'BrowserContext', 'newPage').then((page) => {31 resolveAsyncComponent(page, 'Page', 'evaluate', '() => 42').then(console.log);32 });33 });34}35test();

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Using AI Code Generation

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1const { resolveAsyncComponent } = require('playwright/​lib/​server/​chromium/​crPage');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 const componentHandle = await resolveAsyncComponent(page, 'some-component');8 console.log(await componentHandle.evaluate(e => e.getAttribute('id')));9 await browser.close();10})();

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Using AI Code Generation

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1const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​resolveAsyncComponent');2const { test } = require('@playwright/​test');3test('test', async ({ page }) => {4 const component = await resolveAsyncComponent(page, 'Component');5 await component.click();6});7import React from 'react';8export default function Component() {9 return <div>Component</​div>;10}

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Using AI Code Generation

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1const { resolveAsyncComponent } = require('@playwright/​test');2const { Page } = require('@playwright/​test');3const { ElementHandle } = require('@playwright/​test');4const { Frame } = require('@playwright/​test');5const { Worker } = require('@playwright/​test');6const { JSHandle } = require('@playwright/​test');7const { Component } = require('playwright');8class MyComponent extends Component {9 constructor(page, selectr) {10 super(page, selector);11 }12 async getInnerText() {13 return await this.$eval('div', (div) => div.innerTet);14 }15}16(async () => {17 const component = await resolveAsyncComponent(MyComponent, 'div');18 const text = await component.getInnerText();19})();20const { test, expect } = require('@playwright/​test');21test('test', async ({ page }) => {22 await page.setContent('<div>hello</​div>');23 const component = await page.resolveAsyncComponent('div');24 expect(await component.getInnerText()).toBe('hello');25});26const { test, expect } = require('@playwright/​test');27test('test', async ({ page }) => {28 await page.setContent('<div>hello</​div>');29 const component = await page.resolveAsyncComponent('div');30 expect(await component.getInnerText()).toBe('hello');31});32const { test, expect } = require('@playwright/​test');33test('test', async ({ page }) => {34 await page.setContent('<div>hello</​div>');35 const component = await page.resolveAsyncComponent('div');36 expect(await component.getInnerText()).toBe('hello');37});38const { test, expect } = require('@playwright/​test');39test('test', async ({ page }) => {40 await page.setContent('<div>hello</​div>');41 const component = await page.resolveAsyncComponent('div');42 expect(await component.getInnerText()).toBe('hello');43});44const { test, expect } = require('@playwright/​test');45test('test', async ({ page46 const browser = await chromium.launch();47 const context = await browser.newContext();48 const page = await context.newPage();49 const input = await page.$('input[name="q"]');50 await input.type('Hello World!');51 await page.screenshot({ path: `example.png` });52 await browser.close();53})();

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Using AI Code Generation

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1const { resolveAsyncComponent } = require('playwright/​lib/​client/​initializer');2const component = resolveAsyncComponent('playwright');3console.log(component);4import { resolveAsyncComponent } from 'playwright/​lib/​client/​initializer';5const component = resolveAsyncComponent('playwright');6console.log(component);7const { resolveAsyncComponent } = require('playwright/​lib/​client/​initializer');8const component = resolveAsyncComponent('playwright');9console.log(component);10import { resolveAsyncComponent } from 'playwright/​lib/​client/​initializer';11const component = resolveAsyncComponent('playwright');12console.log(component);13const { resolveAsyncComponent } = require('playwright/​lib/​client/​initializer');14const component = resolveAsyncComponent('playwright');15console.log(component);16import { resolveAsyncComponent } from 'playwright/​lib/​client/​initializer';17const component = resolveAsyncComponent('playwright');18console.log(component);19const { resolveAsyncComponent } = require('playwright/​lib/​client/​initializer');20const component = resolveAsyncComponent('playwright');21console.log(component);22import { resolveAsyncComponent } from 'playwright/​lib/​client/​initializer';23const component = resolveAsyncComponent('playwright');24console.log(component);25const { resolveAsyncComponent } = require('playwright/​lib/​client/​initializer');26const component = resolveAsyncComponent('playwright');27console.log(component);28import { resolveAsyncComponent } from 'playwright/​lib/​client/​initializer';29const component = resolveAsyncComponent('playwright');30console.log(component);31const {

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Using AI Code Generation

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1const { resolveAsyncComponent } = require('playwright/​lib/​server/​asyncComponent');2(async () => {3 const component = await resolveAsyncComponent('playwright');4 console.log(component);5})();6{ default: [Function: Playwright] }

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Using AI Code Generation

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1const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');2const component = await resolveAsyncComponent('test-component');3const { test } = await component.load();4const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');5const component = await resolveAsyncComponent('test-component');6const { test } = await component.load();7const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');8const component = await resolveAsyncComponent('test-component');9const { test } = await component.load();10const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');11const component = await resolveAsyncComponent('test-component');12const { test } = await component.load();13const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');14const component = await resolveAsyncComponent('test-component');15const { test } = await component.load();16const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');17const component = await resolveAsyncComponent('test-component');18const { test } = await component.load();19const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');20const component = await resolveAsyncComponent('test-component');21const { test } = await component.load();22const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');23const component = await resolveAsyncComponent('test-component');24const { test } = await component.load();25const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');26const component = await resolveAsyncComponent('test-component');27const { test } = await component.load();

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Using AI Code Generation

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1const { resolveAsyncComponent } = require('playwright');2const component = await resolveAsyncComponent(page, 'div');3const { resolveAsyncComponent } = require('playwright');4const component = await resolveAsyncComponent(page, 'div');5const { resolveAsyncComponent } = require('playwright');6const component = await resolveAsyncComponent(page, 'div');7const { resolveAsyncComponent } = require('playwright');8const component = await resolveAsyncComponent(page, 'div');9const { resolveAsyncComponent } = require('playwright');10const component = await resolveAsyncComponent(page, 'div');11const { resolveAsyncComponent } = require('playwright');12const component = await resolveAsyncComponent(page, 'div');13const { resolveAsyncComponent } = require('playwright');14const component = await resolveAsyncComponent(page, 'div');15const { resolveAsyncComponent } = require('playwright');16const component = await resolveAsyncComponent(page, 'div');17const { resolveAsyncComponent } = require('playwright');18const component = await resolveAsyncComponent(page, 'div');19const { resolveAsyncComponent } = require('

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Using AI Code Generation

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1const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');2const component = await resolveAsyncComponent('test-component');3const { test } = await component.load();4const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');5const component = await resolveAsyncComponent('test-component');6const { test } = await component.load();7const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');8const component = await resolveAsyncComponent('test-component');9const { test } = await component.load();10const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');11const component = await resolveAsyncComponent('test-component');12const { test } = await component.load();13const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');14const component = await resolveAsyncComponent('test-component');15const { test } = await component.load();16const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');17const component = await resolveAsyncComponent('test-component');18const { test } = await component.load();19const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');20const component = await resolveAsyncComponent('test-component');21const { test } = await component.load();22const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');23const component = await resolveAsyncComponent('test-component');24const { test } = await component.load();25const { resolveAsyncComponent } = require('@playwright/​test/​lib/​server/​asyncComponent');26const component = await resolveAsyncComponent('test-component');27const { test } = await component.load();

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Using AI Code Generation

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1const { resolveAsyncComponent } = require('playwright');2const component = await resolveAsyncComponent(page, 'div');3const { resolveAsyncComponent } = require('playwright');4const component = await resolveAsyncComponent(page, 'div');5const { resolveAsyncComponent } = require('playwright');6const component = await resolveAsyncComponent(page, 'div');7const { resolveAsyncComponent } = require('playwright');8const component = await resolveAsyncComponent(page, 'div');9const { resolveAsyncComponent } = require('playwright');10const component = await resolveAsyncComponent(page, 'div');11const { resolveAsyncComponent } = require('playwright');12const component = await resolveAsyncComponent(page, 'div');13const { resolveAsyncComponent } = require('playwright');14const component = await resolveAsyncComponent(page, 'div');15const { resolveAsyncComponent } = require('playwright');16const component = await resolveAsyncComponent(page, 'div');17const { resolveAsyncComponent } = require('playwright');18const component = await resolveAsyncComponent(page, 'div');19const { resolveAsyncComponent } = require('

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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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