How to use useDebugValue method in Playwright Internal

Best JavaScript code snippet using playwright-internal

CustomHooks.js

Source:CustomHooks.js

...31function useNestedOuterHook() {32  return useNestedInnerHook();33}34function useCustomObject() {35  useDebugValue(object);36  return useState(123);37}38function useDeepHookA() {39  useDebugValue('useDeepHookA');40  useDeepHookB();41}42function useDeepHookB() {43  useDebugValue('useDeepHookB');44  useDeepHookC();45}46function useDeepHookC() {47  useDebugValue('useDeepHookC');48  useDeepHookD();49}50function useDeepHookD() {51  useDebugValue('useDeepHookD');52  useDeepHookE();53}54function useDeepHookE() {55  useDebugValue('useDeepHookE');56  useDeepHookF();57}58function useDeepHookF() {59  useDebugValue('useDeepHookF');60}61function FunctionWithHooks(props: any, ref: React$Ref<any>) {62  const [count, updateCount] = useState(0);63  // eslint-disable-next-line no-unused-vars64  const [_, __] = useState(object);65  // Custom hook with a custom debug label66  const debouncedCount = useDebounce(count, 1000);67  useCustomObject();68  const onClick = useCallback(69    function onClick() {70      updateCount(count + 1);71    },72    [count],73  );74  // Tests nested custom hooks75  useNestedOuterHook();76  // Verify deep nesting doesn't break77  useDeepHookA();78  return <button onClick={onClick}>Count: {debouncedCount}</button>;79}80const MemoWithHooks = memo(FunctionWithHooks);81const ForwardRefWithHooks = forwardRef(FunctionWithHooks);82export default function CustomHooks() {83  return (84    <Fragment>85      <FunctionWithHooks />86      <MemoWithHooks />87      <ForwardRefWithHooks />88    </Fragment>89  );90}91// Below copied from https://usehooks.com/92function useDebounce(value, delay) {93  // State and setters for debounced value94  const [debouncedValue, setDebouncedValue] = useState(value);95  // Show the value in DevTools96  useDebugValue(debouncedValue);97  useEffect(98    () => {99      // Update debounced value after delay100      const handler = setTimeout(() => {101        setDebouncedValue(value);102      }, delay);103      // Cancel the timeout if value changes (also on delay change or unmount)104      // This is how we prevent debounced value from updating if value is changed ...105      // .. within the delay period. Timeout gets cleared and restarted.106      return () => {107        clearTimeout(handler);108      };109    },110    [value, delay], // Only re-call effect if value or delay changes...

06.js

Source:06.js

1import matchMediaPolyfill from 'mq-polyfill'2import * as React from 'react'3import {alfredTip} from '@kentcdodds/react-workshop-app/test-utils'4import {render, act} from '@testing-library/react'5import App from '../final/06'6// import App from '../exercise/06'7beforeAll(() => {8  matchMediaPolyfill(window)9  window.resizeTo = function resizeTo(width, height) {10    Object.assign(this, {11      innerWidth: width,12      innerHeight: height,13      outerWidth: width,14      outerHeight: height,15    }).dispatchEvent(new this.Event('resize'))16  }17})18test('works', () => {19  jest.spyOn(React, 'useDebugValue')20  const {container} = render(<App />)21  alfredTip(22    () => expect(React.useDebugValue).toHaveBeenCalled(),23    `Make sure to call \`useDebugValue\` with the formatted value`,24  )25  alfredTip(26    () =>27      expect(React.useDebugValue).toHaveBeenCalledWith(28        expect.stringContaining('max-width: 699px'),29      ),30    `Make sure to call \`useDebugValue\` with the formatted value`,31  )32  alfredTip(33    () =>34      expect(React.useDebugValue).toHaveBeenCalledWith(35        expect.stringContaining('max-width: 999px'),36      ),37    `Make sure to call \`useDebugValue\` with the formatted value`,38  )39  alfredTip(40    () =>41      expect(React.useDebugValue).toHaveBeenCalledWith(42        expect.stringContaining('min-width: 1000px'),43      ),44    `Make sure to call \`useDebugValue\` with the formatted value`,45  )46  const box = container.querySelector('[style]')47  act(() => {48    window.resizeTo(1001, 1001)49  })50  expect(box).toHaveStyle(`background-color: green;`)51  act(() => {52    window.resizeTo(800, 800)53  })54  expect(box).toHaveStyle(`background-color: yellow;`)55  act(() => {56    window.resizeTo(600, 600)57  })58  expect(box).toHaveStyle(`background-color: red;`)...

useDebugValue.test.js

Source:useDebugValue.test.js

...13		delete options.useDebugValue;14	});15	it('should do nothing when no options hook is present', () => {16		function useFoo() {17			useDebugValue('foo');18			return useState(0);19		}20		function App() {21			let [v] = useFoo();22			return <div>{v}</div>;23		}24		expect(() => render(<App />, scratch)).to.not.throw();25	});26	it('should call options hook with value', () => {27		let spy = (options.useDebugValue = sinon.spy());28		function useFoo() {29			useDebugValue('foo');30			return useState(0);31		}32		function App() {33			let [v] = useFoo();34			return <div>{v}</div>;35		}36		render(<App />, scratch);37		expect(spy).to.be.calledOnce;38		expect(spy).to.be.calledWith('foo');39	});40	it('should apply optional formatter', () => {41		let spy = (options.useDebugValue = sinon.spy());42		function useFoo() {43			useDebugValue('foo', x => x + 'bar');44			return useState(0);45		}46		function App() {47			let [v] = useFoo();48			return <div>{v}</div>;49		}50		render(<App />, scratch);51		expect(spy).to.be.calledOnce;52		expect(spy).to.be.calledWith('foobar');53	});...

Using AI Code Generation

1const { useDebugValue } = require('playwright/lib/client/debug');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  await page.screenshot({ path: `example.png` });8  await browser.close();9})();10useDebugValue('test');

Using AI Code Generation

1const { useDebugValue } = require('playwright-internal');2const { chromium } = require('playwright');3const browser = await chromium.launch();4const context = await browser.newContext();5const page = await context.newPage();6useDebugValue(page, 'My Page');7await page.screenshot({ path: 'example.png' });8await browser.close();9const { useDebugValue } = require('playwright-internal');10const { chromium } = require('playwright');11const browser = await chromium.launch();12const context = await browser.newContext();13const page = await context.newPage();14useDebugValue(page, 'My Page');15await page.screenshot({ path: 'example.png' });16await browser.close();17import { useDebugValue } from 'playwright-internal';18import { chromium } from 'playwright';19const browser = await chromium.launch();20const context = await browser.newContext();21const page = await context.newPage();22useDebugValue(page, 'My Page');23await page.screenshot({ path: 'example.png' });24await browser.close();25import { useDebugValue } from 'playwright-internal';26import { chromium } from 'playwright';27const browser = await chromium.launch();28const context = await browser.newContext();29const page = await context.newPage();30useDebugValue(page, 'My Page');31await page.screenshot({ path: 'example.png' });32await browser.close();33import { useDebugValue } from 'playwright-internal';34import { chromium } from 'playwright';35const browser = await chromium.launch();36const context = await browser.newContext();37const page = await context.newPage();38useDebugValue(page, 'My Page');39await page.screenshot({ path: 'example.png' });40await browser.close();

Using AI Code Generation

1const { useDebugValue } = require('@playwright/test');2useDebugValue('some value');3const { useDebugValue } = require('@playwright/test');4useDebugValue('some value');5const { test, useDebugValue } = require('@playwright/test');6test('my test', async ({ page }) => {7  useDebugValue('some value');8});9const { test, useDebugValue } = require('@playwright/test');10test.use({ /* ... */ });11test.fixtures.useDebugValue = async ({}, run) => {12  useDebugValue('some value');13  await run();14};15const { test, useDebugValue } = require('@playwright/test');16test.use({ /* ... */ });17test.beforeAll(async ({}) => {18  useDebugValue('some value');19});20const { test, useDebugValue } = require('@playwright/test');21test.use({ /* ... */ });22test.afterAll(async ({}) => {23  useDebugValue('some value');24});25const { test, useDebugValue } = require('@playwright/test');26test.use({ /* ... */ });27test.beforeEach(async ({}) => {28  useDebugValue('some value');29});30test.afterEach(async ({}) => {31  useDebugValue('some value');32});33const { test, useDebugValue } = require('@playwright/test');34test.use({ /* ... */ });35test.beforeEach(async ({}) => {36  useDebugValue('some value');37});38test.afterEach(async ({}) => {39  useDebugValue('some value');40});

Using AI Code Generation

1const { useDebugValue } = require('playwright');2useDebugValue('test');3const { useDebugValue } = require('playwright');4useDebugValue('test');5const { useDebugValue } = require('playwright');6useDebugValue('test');7import { useDebugValue } from 'playwright';8useDebugValue('test');9import { useDebugValue } from 'playwright';10useDebugValue('test');11import { useDebugValue } from 'playwright';12useDebugValue('test');13browser.newContext([options]) → Promise<BrowserContext>14browser.newContext([options])15browser.newContext([options], [callback])16browser.newContext([options], [callback])

Using AI Code Generation

1const {useDebugValue} = require('playwright/internal/inspector');2useDebugValue(1);3const {useDebugValue} = require('playwright/internal/inspector');4useDebugValue(1);5const {useDebugValue} = require('playwright/internal/inspector');6useDebugValue(1);7const {useDebugValue} = require('playwright/internal/inspector');8useDebugValue(1);9const {useDebugValue} = require('playwright/internal/inspector');10useDebugValue(1);11const {useDebugValue} = require('playwright/internal/inspector');12useDebugValue(1);13const {useDebugValue} = require('playwright/internal/inspector');14useDebugValue(1);15const {useDebugValue} = require('playwright/internal/inspector');16useDebugValue(1);17const {useDebugValue} = require('playwright/internal/inspector');18useDebugValue(1);19const {useDebugValue} = require('playwright/internal/inspector');20useDebugValue(1);21const {useDebugValue} = require('playwright/internal/inspector');22useDebugValue(1);23const {useDebugValue} = require('playwright/internal/inspector');24useDebugValue(1);

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.