Best JavaScript code snippet using playwright-internal
ReactErrorUtils-test.internal.js
Source:ReactErrorUtils-test.internal.js  
...22      'foo',23      callback,24      null,25    );26    expect(ReactErrorUtils.hasCaughtError()).toBe(false);27    expect(() => ReactErrorUtils.rethrowCaughtError()).toThrow(err);28  });29  it(`should call the callback the passed arguments`, () => {30    const callback = jest.fn();31    ReactErrorUtils.invokeGuardedCallback(32      'foo',33      callback,34      null,35      'arg1',36      'arg2',37    );38    expect(callback).toBeCalledWith('arg1', 'arg2');39  });40  it(`should call the callback with the provided context`, () => {41    const context = {didCall: false};42    ReactErrorUtils.invokeGuardedCallback(43      'foo',44      function() {45        this.didCall = true;46      },47      context,48    );49    expect(context.didCall).toBe(true);50  });51  it(`should catch errors`, () => {52    const error = new Error();53    const returnValue = ReactErrorUtils.invokeGuardedCallback(54      'foo',55      function() {56        throw error;57      },58      null,59      'arg1',60      'arg2',61    );62    expect(returnValue).toBe(undefined);63    expect(ReactErrorUtils.hasCaughtError()).toBe(true);64    expect(ReactErrorUtils.clearCaughtError()).toBe(error);65  });66  it(`should return false from clearCaughtError if no error was thrown`, () => {67    const callback = jest.fn();68    ReactErrorUtils.invokeGuardedCallback('foo', callback, null);69    expect(ReactErrorUtils.hasCaughtError()).toBe(false);70    expect(ReactErrorUtils.clearCaughtError).toThrow('no error was captured');71  });72  it(`can nest with same debug name`, () => {73    const err1 = new Error();74    let err2;75    const err3 = new Error();76    let err4;77    ReactErrorUtils.invokeGuardedCallback(78      'foo',79      function() {80        ReactErrorUtils.invokeGuardedCallback(81          'foo',82          function() {83            throw err1;84          },85          null,86        );87        err2 = ReactErrorUtils.clearCaughtError();88        throw err3;89      },90      null,91    );92    err4 = ReactErrorUtils.clearCaughtError();93    expect(err2).toBe(err1);94    expect(err4).toBe(err3);95  });96  it(`handles nested errors`, () => {97    const err1 = new Error();98    let err2;99    ReactErrorUtils.invokeGuardedCallback(100      'foo',101      function() {102        ReactErrorUtils.invokeGuardedCallback(103          'foo',104          function() {105            throw err1;106          },107          null,108        );109        err2 = ReactErrorUtils.clearCaughtError();110      },111      null,112    );113    // Returns null because inner error was already captured114    expect(ReactErrorUtils.hasCaughtError()).toBe(false);115    expect(err2).toBe(err1);116  });117  it('handles nested errors in separate renderers', () => {118    const ReactErrorUtils1 = require('shared/ReactErrorUtils');119    jest.resetModules();120    const ReactErrorUtils2 = require('shared/ReactErrorUtils');121    expect(ReactErrorUtils1).not.toEqual(ReactErrorUtils2);122    let ops = [];123    ReactErrorUtils1.invokeGuardedCallback(124      null,125      () => {126        ReactErrorUtils2.invokeGuardedCallback(127          null,128          () => {129            throw new Error('nested error');130          },131          null,132        );133        // ReactErrorUtils2 should catch the error134        ops.push(ReactErrorUtils2.hasCaughtError());135        ops.push(ReactErrorUtils2.clearCaughtError().message);136      },137      null,138    );139    // ReactErrorUtils1 should not catch the error140    ops.push(ReactErrorUtils1.hasCaughtError());141    expect(ops).toEqual([true, 'nested error', false]);142  });143  if (!__DEV__) {144    // jsdom doesn't handle this properly, but Chrome and Firefox should. Test145    // this with a fixture.146    it('catches null values', () => {147      ReactErrorUtils.invokeGuardedCallback(148        null,149        function() {150          throw null; // eslint-disable-line no-throw-literal151        },152        null,153      );154      expect(ReactErrorUtils.hasCaughtError()).toBe(true);155      expect(ReactErrorUtils.clearCaughtError()).toBe(null);156    });157  }158  it(`can be shimmed`, () => {159    const ops = [];160    jest.resetModules();161    jest.mock(162      'shared/invokeGuardedCallbackImpl',163      () =>164        function invokeGuardedCallback(name, func, context, a) {165          ops.push(a);166          try {167            func.call(context, a);168          } catch (error) {...MainErrorBoundary.js
Source:MainErrorBoundary.js  
1import React from 'react';2import DocumentTitle from 'react-document-title';3import ImageBrokenPlate from './ImageBrokenPlate';4import ImageSpinningPlate from './ImageSpinningPlate';5class MainErrorBoundary extends React.Component {6  constructor(props) {7    super(props);8    this.state = {hasCaughtError: false};9  }10  componentDidCatch(error) {11    console.error(error.message);12    this.setState({hasCaughtError: true});13  }14  render() {15    const {title, className, isWaiting, hasError} = this.props;16    const {hasCaughtError} = this.state;17    return (18      <DocumentTitle title={title}>19        <main className={className}>20          {isWaiting ? (21            <ImageSpinningPlate />22          ) : hasError || hasCaughtError ? (23            <ImageBrokenPlate />24          ) : (25            this.props.children26          )}27        </main>28      </DocumentTitle>29    );30  }31}...Using AI Code Generation
1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  try {7    await page.click('non-existent-selector');8  } catch (e) {9    if (e instanceof Error) {10    }11  }12  await browser.close();13})();14const { chromium } = require('playwright');15(async () => {16  const browser = await chromium.launch();17  const context = await browser.newContext();18  const page = await context.newPage();19  try {20    await page.click('non-existent-selector');21  } catch (e) {22    if (e instanceof Error) {23    }24  }25  await browser.close();26})();27const { chromium } = require('playwright');28(async () => {29  const browser = await chromium.launch();30  const context = await browser.newContext();31  const page = await context.newPage();32  try {33    await page.click('non-existent-selector');34  } catch (e) {35    if (e instanceof Error) {36    }37  }38  await browser.close();39})();40const { chromium } = require('playwright');41(async () => {42  const browser = await chromium.launch();43  const context = await browser.newContext();44  const page = await context.newPage();45  try {46    await page.click('non-existent-selector');47  } catch (e) {48    if (e instanceof Error) {49    }50  }51  await browser.close();52})();53const { chromium } = require('playwright');54(async () => {Using AI Code Generation
1const { InternalError } = require('playwright');2try {3} catch (e) {4  if (e instanceof InternalError && e.hasCaughtError()) {5    console.log(e.getCaughtError());6  }7}8const { InternalError } = require('playwright');9try {10} catch (e) {11  if (e instanceof InternalError && e.hasCaughtError()) {12    console.log(e.getCaughtError());13  }14}15const { InternalError } = require('playwright');16try {17} catch (e) {18  if (e instanceof InternalError && e.hasCaughtError()) {19    console.log(e.getCaughtError());20  }21}22const { InternalError } = require('playwright');23try {24} catch (e) {25  if (e instanceof InternalError && e.hasCaughtError()) {26    console.log(e.getCaughtError());27  }28}29const { InternalError } = require('playwright');30try {31} catch (e) {32  if (e instanceof InternalError && e.hasCaughtError()) {33    console.log(e.getCaughtError());34  }35}36const { InternalError } = require('playwright');37try {38} catch (e) {39  if (e instanceof InternalError && e.hasCaughtError()) {40    console.log(e.getCaughtError());41  }42}43const { InternalError } = require('playwright');44try {45} catch (e) {46  if (e instanceof InternalError && e.hasCaughtError()) {47    console.log(e.getCaughtError());48  }49}Using AI Code Generation
1const { InternalError } = require('playwright-core/lib/server/errors');2const { hasCaughtError } = new InternalError();3const { InternalError } = require('playwright-core/lib/server/errors');4const { hasCaughtError } = new InternalError();5const { InternalError } = require('playwright-core/lib/server/errors');6const { hasCaughtError } = new InternalError();7const { InternalError } = require('playwright-core/lib/server/errors');8const { hasCaughtError } = new InternalError();9const { InternalError } = require('playwright-core/lib/server/errors');10const { hasCaughtError } = new InternalError();11const { InternalError } = require('playwright-core/lib/server/errors');12const { hasCaughtError } = new InternalError();13const { InternalError } = require('playwright-core/lib/server/errors');14const { hasCaughtError } = new InternalError();15const { InternalError } = require('playwright-core/lib/server/errors');16const { hasCaughtError } = new InternalError();17const { InternalError } = require('playwright-core/lib/server/errors');18const { hasCaughtError } = new InternalError();19const { InternalError } = require('playwright-core/lib/server/errors');20const { hasCaughtError } = new InternalError();21const { InternalError } = require('playwright-core/lib/server/errors');22const { hasCaughtError } = new InternalError();23const { InternalError } = require('playwright-core/lib/server/errors');24const { hasCaughtError } = new InternalError();25const { InternalErrorUsing AI Code Generation
1const { chromium } = require('playwright')2const { test, expect } = require('@playwright/test')3test('Test 1', async ({ page }) => {4  const browser = await chromium.launch({ headless: false })5  const context = await browser.newContext()6  const page = await context.newPage()7  await page.screenshot({ path: 'screenshot.png' })8  await browser.close()9})10test('Test 2', async ({ page }) => {11  const browser = await chromium.launch({ headless: false })12  const context = await browser.newContext()13  const page = await context.newPage()14  await page.screenshot({ path: 'screenshot.png' })15  await browser.close()16})17test('Test 3', async ({ page }) => {18  const browser = await chromium.launch({ headless: false })19  const context = await browser.newContext()20  const page = await context.newPage()21  await page.screenshot({ path: 'screenshot.png' })22  await browser.close()23})24test('Test 4', async ({ page }) => {25  const browser = await chromium.launch({ headless: false })26  const context = await browser.newContext()27  const page = await context.newPage()28  await page.screenshot({ path: 'screenshot.png' })29  await browser.close()30})31test('Test 5', async ({ page }) => {32  const browser = await chromium.launch({ headless: false })33  const context = await browser.newContext()34  const page = await context.newPage()35  await page.screenshot({ path: 'screenshot.png' })36  await browser.close()37})38test('Test 6', async ({ page }) => {39  const browser = await chromium.launch({ headless: false })40  const context = await browser.newContext()41  const page = await context.newPage()42  await page.screenshot({ path: 'screenshot.png' })43  await browser.close()44})45test('Test 7', async ({ page }) => {46  const browser = await chromium.launch({ headless: false })Using AI Code Generation
1const { test, expect } = require('@playwright/test');2test('test', async ({ page }) => {3  try {4  } catch (e) {5    if (e instanceof Playwright.InternalError && e.hasCaughtError()) {6      console.log('caught error: ' + e.getCaughtError().message);7    } else {8      throw e;9    }10  }11});12import { test, expect } from '@playwright/test';13test('test', async ({ page }) => {14  try {15  } catch (e) {16    if (e instanceof Playwright.InternalError && e.hasCaughtError()) {17      console.log('caught error: ' + e.getCaughtError().message);18    } else {19      throw e;20    }21  }22});23const { test, expect } = require('@playwright/test');24test('test', async ({ page }) => {25  try {26  } catch (e) {27    if (e instanceof Playwright.InternalError && e.hasCaughtError()) {28      console.log('caught error: ' + e.getCaughtError().message);29    } else {30      throw e;31    }32  }33});Using AI Code Generation
1const { InternalError } = require('playwright/lib/server/errors');2const { hasCaughtError } = require('playwright/lib/server/errors');3const error = new InternalError('test error');4if (hasCaughtError(error)) {5    console.log('caught error');6}Using AI Code Generation
1const { InternalError } = require('playwright');2const internalError = new InternalError();3if (internalError.hasCaughtError()) {4    console.log('Error has been caught');5} else {6    console.log('Error has not been caught');7}Using AI Code Generation
1const { Page } = require('playwright');2const { InternalError } = require('playwright-core/lib/server/common/errors');3const { test } = require('playwright-core/lib/server/test');4const { expect } = require('playwright-core/lib/server/test/mocha');5const { describe, it } = require('mocha');6describe('InternalError', () => {7  it('should be able to use hasCaughtError method', async () => {8    const page = await test.newPage();9    const error = await page.evaluate(() => {10      try {11        throw new Error('error');12      } catch (e) {13        return e;14      }15    });16    expect(error).toBeInstanceOf(InternalError);17    expect(InternalError.hasCaughtError(error)).toBe(true);18  });19});Using AI Code Generation
1const { InternalError } = require('playwright/lib/server/errors');2const test = require('playwright/lib/server/test');3const { expect } = require('chai');4const { testRunner } = require('playwright/lib/server/testRunner');5const { describe } = require('playwright/lib/server/testRunner');6const { it } = require('playwright/lib/server/testRunner');7const { beforeAll } = require('playwright/lib/server/testRunner');8const { afterAll } = require('playwright/lib/server/testRunner');9const { beforeEach } = require('playwright/lib/server/testRunner');10const { afterEach } = require('playwright/lib/server/testRunner');11const { setConfig } = require('playwright/lib/server/testRunner');12const { setOutput } = require('playwright/lib/server/testRunner');13const { setExpect } = require('playwright/lib/server/testRunner');14const { setFixtures } = require('playwright/lib/server/testRunner');15describe('test', () => {16  it('should pass', async () => {17    expect(1).toBe(1);18  });19  it('should fail', async () => {20    expect(1).toBe(2);21  });22});23const test = require('playwright/lib/server/test');24const { expect } = require('chai');25const { testRunner } = require('playwright/lib/server/testRunner');26const { describe } = require('playwright/lib/server/testRunner');27const { it } = require('playwright/lib/server/testRunner');28const { beforeAll } = require('playwright/lib/server/testRunner');29const { afterAll } = require('playwright/lib/server/testRunner');30const { beforeEach } = require('playwright/lib/server/testRunner');31const { afterEach } = require('playwright/lib/server/testRunner');32const { setConfig } = require('playwright/lib/server/testRunner');33const { setOutput } = require('playwright/lib/server/testRunner');34const { setExpect } = require('playwright/lib/server/testRunner');35const { setFixtures } = require('playwright/lib/server/testRunner');36const { InternalError } = require('playwright/lib/server/errors');37describe('test', () => {38  it('should pass', async () => {39    expect(1).toBe(1);40  });41  it('should fail',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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