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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.

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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.
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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.
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