How to use installCoverageHooks method in Playwright Internal

Best JavaScript code snippet using playwright-internal

coverage.js

Source:coverage.js

...80}81/**82 * @param {string} browserName83 */84function installCoverageHooks(browserName) {85  const {api, events} = apiForBrowser(browserName);86  const coverage = new Map();87  const uninstall = traceAPICoverage(coverage, api, events);88  return {coverage, uninstall};89}90class CoverageEnv {91  /**92   * @param {string} browserName93   */94  constructor(browserName) {95    this.browserName = browserName;96  }97  /**98   * @param {import('folio').WorkerInfo} workerInfo99   */100  async beforeAll(workerInfo) {101    this.coverage = installCoverageHooks(this.browserName);102  }103  /**104   * @param {import('folio').WorkerInfo} workerInfo105   */106   async afterAll(workerInfo) {107    const { coverage, uninstall } = this.coverage;108    uninstall();109    const coveragePath = path.join(__dirname, '..', 'coverage-report', workerInfo.workerIndex + '.json');110    const coverageJSON = Array.from(coverage.keys()).filter(key => coverage.get(key));111    await fs.promises.mkdir(path.dirname(coveragePath), { recursive: true });112    await fs.promises.writeFile(coveragePath, JSON.stringify(coverageJSON, undefined, 2), 'utf8');113  }114}115module.exports = {...

checkCoverage.js

Source:checkCoverage.js

...16const path = require('path');17const fs = require('fs');18const {installCoverageHooks} = require('./coverage');19const browserName = process.argv[2] || 'chromium';20let api = new Set(installCoverageHooks(browserName).coverage.keys());21// coverage exceptions22if (browserName === 'chromium') {23  // Sometimes we already have a background page while launching, before adding a listener.24  api.delete('browserContext.emit("backgroundpage")');25}26if (browserName !== 'chromium') {27  // we don't have CDPSession in non-chromium browsers28  api.delete('browser.newBrowserCDPSession');29  api.delete('browser.startTracing');30  api.delete('browser.stopTracing');31  api.delete('browserContext.backgroundPages');32  api.delete('browserContext.serviceWorkers');33  api.delete('browserContext.newCDPSession');34  api.delete('browserContext.emit("backgroundpage")');...

Using AI Code Generation

1const { installCoverageHooks } = require('playwright/lib/server/coverage');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  installCoverageHooks(page);8  await page.coverage.startJSCoverage();9  const jsCoverage = await page.coverage.stopJSCoverage();10  console.log(jsCoverage);11  await browser.close();12})();13const { chromium } = require('playwright');14(async () => {15  const browser = await chromium.launch();16  const context = await browser.newContext();17  const page = await context.newPage();18  await page.coverage.startJSCoverage();19  const jsCoverage = await page.coverage.stopJSCoverage();20  console.log(jsCoverage);21  await browser.close();22})();23const { chromium } = require('playwright');24(async () => {25  const browser = await chromium.launch();26  const context = await browser.newContext();27  const page = await context.newPage();28  await page.coverage.startJSCoverage();29  const jsCoverage = await page.coverage.stopJSCoverage();30  console.log(jsCoverage);31  await browser.close();32})();33const { chromium } = require('playwright');34(async () => {35  const browser = await chromium.launch();36  const context = await browser.newContext();37  const page = await context.newPage();

Using AI Code Generation

1const { installCoverageHooks } = require('playwright/lib/server/coverage');2const { chromium } = require('playwright-chromium');3const path = require('path');4(async () => {5  const browser = await chromium.launch();6  const context = await browser.newContext();7  installCoverageHooks(path.join(__dirname, 'coverage.json'), context);8  const page = await context.newPage();9  await page.close();10  await context.close();11  await browser.close();12})();13Now, we have to use the coverage file to generate the report. We will be using the [nyc](

Using AI Code Generation

1const { installCoverageHooks } = require('playwright/lib/server/cjs/test/coverage');2installCoverageHooks();3const { installCoverageHooks } = require('playwright/lib/server/cjs/test/coverage');4installCoverageHooks();5const { installCoverageHooks } = require('playwright/lib/server/cjs/test/coverage');6installCoverageHooks();7const { installCoverageHooks } = require('playwright/lib/server/cjs/test/coverage');8installCoverageHooks();9const { installCoverageHooks } = require('playwright/lib/server/cjs/test/coverage');10installCoverageHooks();11const { installCoverageHooks } = require('playwright/lib/server/cjs/test/coverage');12installCoverageHooks();13const { installCoverageHooks } = require('playwright/lib/server/cjs/test/coverage');14installCoverageHooks();15const { installCoverageHooks } = require('playwright/lib/server/cjs/test/coverage');16installCoverageHooks();17const { installCoverageHooks } = require('playwright/lib/server/cjs/test/coverage');18installCoverageHooks();19const { installCoverageHooks } = require('playwright/lib/server/cjs/test/coverage');20installCoverageHooks();21const { installCoverageHooks } = require('playwright/lib/server/cjs/test/coverage');22installCoverageHooks();23const { installCoverageHooks } = require('playwright/lib/server/cjs/test/coverage');24installCoverageHooks();25const { installCoverageHooks } = require('playwright/lib/server/cjs/test/coverage');26installCoverageHooks();27const { installCoverageHooks } = require('playwright/lib/server/cjs/test

Using AI Code Generation

1const { installCoverageHooks } = require('playwright/lib/server/coverage');2installCoverageHooks();3const { chromium } = require('playwright');4(async () => {5  const browser = await chromium.launch();6  const context = await browser.newContext();7  const page = await context.newPage();8  await page.close();9  await context.close();10  await browser.close();11})();12const { installCoverageHooks } = require('playwright/lib/server/coverage');13installCoverageHooks();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  await page.close();20  await context.close();21  await browser.close();22})();23const { installCoverageHooks } = require('playwright/lib/server/coverage');24installCoverageHooks();25const { chromium } = require('playwright');26(async () => {27  const browser = await chromium.launch();28  const context = await browser.newContext();29  const page = await context.newPage();30  await page.close();31  await context.close();32  await browser.close();33})();34const { installCoverageHooks } = require('playwright/lib/server/coverage');35installCoverageHooks();36const { chromium } = require('playwright');37(async () => {38  const browser = await chromium.launch();39  const context = await browser.newContext();40  const page = await context.newPage();41  await page.close();42  await context.close();43  await browser.close();44})();45const { installCoverageHooks } = require('playwright/lib/server/coverage');46installCoverageHooks();47const { chromium } = require('playwright

Using AI Code Generation

1const { installCoverageHooks } = require('playwright/lib/server/coverage');2const { createTestServer } = require('playwright/test');3const server = await createTestServer();4installCoverageHooks(server);5await server.listen(8080);6await page.coverage.startJSCoverage();7await page.coverage.stopJSCoverage();8await server.stop();9const { installCoverageHooks } = require('playwright/lib/server/coverage');10const { createTestServer } = require('playwright/test');11const server = await createTestServer();12installCoverageHooks(server);13await server.listen(8080);14await page.coverage.startJSCoverage();15await page.coverage.stopJSCoverage();16await server.stop();17const { test, expect } = require('@playwright/test');18test('Should generate coverage report for a file', async ({ page }) => {19  await page.coverage.startJSCoverage();20  await page.coverage.stopJSCoverage();21  const coverage = await page.coverage.stopJSCoverage();22  expect(coverage).toBeTruthy();23  expect(coverage.length).toBe(1);24  expect(coverage[0].text).toBeTruthy();25  expect(coverage[0].ranges.length).toBeGreaterThan(0);26});27const { test, expect } = require('@playwright/test');28test('Should generate coverage report for a file', async ({ page }) => {29  await page.coverage.startJSCoverage();30  await page.coverage.stopJSCoverage();31  const coverage = await page.coverage.stopJSCoverage();32  expect(coverage).toBeTruthy();33  expect(coverage.length).toBe(1);

Using AI Code Generation

1const { installCoverageHooks } = require("@playwright/test");2installCoverageHooks(globalThis);3const { coverage } = require("@playwright/test");4const coverageObject = await coverage.startJSCoverage();5await coverage.stopJSCoverage(coverageObject);6module.exports = {7    {8      globalSetup: require.resolve("./globalSetup.js"),9    },10};11const { chromium } = require("playwright");12module.exports = async () => {13  const browser = await chromium.launch();14  const context = await browser.newContext();15  globalThis.browser = browser;16  globalThis.context = context;17};18module.exports = async () => {19  await globalThis.context.close();20  await globalThis.browser.close();21};22{23  "scripts": {24  },25  "devDependencies": {26  }27}28const { coverage } = require("@playwright/test");29const coverageObject = await coverage.startJSCoverage();30await coverage.stopJSCoverage(coverageObject);31const { coverage } = require("@playwright/test");32const coverageObject = await coverage.startJSCoverage({33    {34    },35});36await coverage.stopJSCoverage(coverageObject);

Using AI Code Generation

1const { installCoverageHooks } = require('playwright/lib/server/coverage');2installCoverageHooks();3const { chromium } = require('playwright');4const browser = await chromium.launch();5const { chromium } = require('playwright');6const browser = await chromium.launch();7const { chromium } = require('playwright');8const browser = await chromium.launch();9const { chromium } = require('playwright');10const browser = await chromium.launch();11const { chromium } = require('playwright');12const browser = await chromium.launch();13const { chromium } = require('playwright');14const browser = await chromium.launch();15const { chromium } = require('playwright');16const browser = await chromium.launch();17const { chromium } = require('playwright');18const browser = await chromium.launch();19const { chromium } = require('playwright');20const browser = await chromium.launch();21const { chromium } = require('playwright');22const browser = await chromium.launch();23const { chromium } = require('playwright');24const browser = await chromium.launch();25const { chromium } = require('playwright');26const browser = await chromium.launch();

Using AI Code Generation

1const { installCoverageHooks } = require('playwright/lib/server/coverage');2installCoverageHooks();3const playwright = require('playwright');4const coverage = await globalThis.__coverage__;5fs.writeFileSync('coverage.json', JSON.stringify(coverage));6const browser = await playwright.chromium.launch();7const context = await browser.newContext();8const page = await context.newPage();9await page.coverage.startJSCoverage();10await page.coverage.stopJSCoverage();11await browser.close();12const { chromium } = require('playwright');13const fs = require('fs');14(async () => {15  const browser = await chromium.launch();

Playwright tutorial

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