How to use traceAPICoverage method in Puppeteer

Best JavaScript code snippet using puppeteer

utils.js

Source:utils.js

...20 * @param {Map<string, boolean>} apiCoverage21 * @param {string} className22 * @param {!Object} classType23 */24function traceAPICoverage(apiCoverage, className, classType) {25  className = className.substring(0, 1).toLowerCase() + className.substring(1);26  for (const methodName of Reflect.ownKeys(classType.prototype)) {27    const method = Reflect.get(classType.prototype, methodName);28    if (methodName === 'constructor' || typeof methodName !== 'string' || methodName.startsWith('_') || typeof method !== 'function')29      continue;30    apiCoverage.set(`${className}.${methodName}`, false);31    Reflect.set(classType.prototype, methodName, function(...args) {32      apiCoverage.set(`${className}.${methodName}`, true);33      return method.call(this, ...args);34    });35  }36  if (classType.Events) {37    for (const event of Object.values(classType.Events))38      apiCoverage.set(`${className}.emit(${JSON.stringify(event)})`, false);39    const method = Reflect.get(classType.prototype, 'emit');40    Reflect.set(classType.prototype, 'emit', function(event, ...args) {41      if (this.listenerCount(event))42        apiCoverage.set(`${className}.emit(${JSON.stringify(event)})`, true);43      return method.call(this, event, ...args);44    });45  }46}47const utils = module.exports = {48  recordAPICoverage: function(testRunner, api, disabled) {49    const coverage = new Map();50    for (const [className, classType] of Object.entries(api))51      traceAPICoverage(coverage, className, classType);52    testRunner.describe('COVERAGE', () => {53      for (const method of coverage.keys()) {54        (disabled.has(method) ? testRunner.xit : testRunner.it)(`public api '${method}' should be called`, async({page, server}) => {55          if (!coverage.get(method))56            throw new Error('NOT CALLED!');57        });58      }59    });60  },61  /**62   * @return {string}63   */64  projectRoot: function() {65    return PROJECT_ROOT;...

coverage-utils.js

Source:coverage-utils.js

...31 * @param {Object} events32 * @param {string} className33 * @param {!Object} classType34 */35function traceAPICoverage(apiCoverage, events, className, classType) {36  className = className.substring(0, 1).toLowerCase() + className.substring(1);37  if (!classType || !classType.prototype) {38    console.error(39      `Coverage error: could not find class for ${className}. Is src/api.ts up to date?`40    );41    process.exit(1);42  }43  for (const methodName of Reflect.ownKeys(classType.prototype)) {44    const method = Reflect.get(classType.prototype, methodName);45    if (46      methodName === 'constructor' ||47      typeof methodName !== 'string' ||48      methodName.startsWith('_') ||49      typeof method !== 'function'50    )51      continue;52    apiCoverage.set(`${className}.${methodName}`, false);53    Reflect.set(classType.prototype, methodName, function (...args) {54      apiCoverage.set(`${className}.${methodName}`, true);55      return method.call(this, ...args);56    });57  }58  if (events[classType.name]) {59    for (const event of Object.values(events[classType.name])) {60      if (typeof event !== 'symbol')61        apiCoverage.set(`${className}.emit(${JSON.stringify(event)})`, false);62    }63    const method = Reflect.get(classType.prototype, 'emit');64    Reflect.set(classType.prototype, 'emit', function (event, ...args) {65      if (typeof event !== 'symbol' && this.listenerCount(event))66        apiCoverage.set(`${className}.emit(${JSON.stringify(event)})`, true);67      return method.call(this, event, ...args);68    });69  }70}71const coverageLocation = path.join(__dirname, 'coverage.json');72const clearOldCoverage = () => {73  try {74    fs.unlinkSync(coverageLocation);75  } catch (error) {76    // do nothing, the file didn't exist77  }78};79const writeCoverage = (coverage) => {80  fs.writeFileSync(coverageLocation, JSON.stringify([...coverage.entries()]));81};82const getCoverageResults = () => {83  let contents;84  try {85    contents = fs.readFileSync(coverageLocation, { encoding: 'utf8' });86  } catch (error) {87    console.error('Warning: coverage file does not exist or is not readable.');88  }89  const coverageMap = new Map(JSON.parse(contents));90  return coverageMap;91};92const trackCoverage = () => {93  clearOldCoverage();94  const coverageMap = new Map();95  before(() => {96    const api = require('../lib/api');97    const events = require('../lib/Events');98    for (const [className, classType] of Object.entries(api))99      traceAPICoverage(coverageMap, events, className, classType);100  });101  after(() => {102    writeCoverage(coverageMap);103  });104};105module.exports = {106  trackCoverage,107  getCoverageResults,...

coverage.js

Source:coverage.js

...19 * @param {Object} events20 * @param {string} className21 * @param {!Object} classType22 */23function traceAPICoverage(apiCoverage, api, events) {24  const uninstalls = [];25  for (const [name, classType] of Object.entries(api)) {26    const className = name.substring(0, 1).toLowerCase() + name.substring(1);27    for (const methodName of Reflect.ownKeys(classType.prototype)) {28      const method = Reflect.get(classType.prototype, methodName);29      if (methodName === 'constructor' || typeof methodName !== 'string' || methodName.startsWith('_') || typeof method !== 'function')30        continue;31      apiCoverage.set(`${className}.${methodName}`, false);32      const override = function(...args) {33        apiCoverage.set(`${className}.${methodName}`, true);34        return method.call(this, ...args);35      };36      Object.defineProperty(override, 'name', { writable: false, value: methodName });37      Reflect.set(classType.prototype, methodName, override);38      uninstalls.push(() => Reflect.set(classType.prototype, methodName, method));39    }40    if (events[name]) {41      for (const event of Object.values(events[name])) {42        if (typeof event !== 'symbol')43          apiCoverage.set(`${className}.emit(${JSON.stringify(event)})`, false);44      }45      const method = Reflect.get(classType.prototype, 'emit');46      Reflect.set(classType.prototype, 'emit', function(event, ...args) {47        if (typeof event !== 'symbol' && this.listenerCount(event))48          apiCoverage.set(`${className}.emit(${JSON.stringify(event)})`, true);49        return method.call(this, event, ...args);50      });51      uninstalls.push(() => Reflect.set(classType.prototype, 'emit', method));52    }53  }54  return () => uninstalls.forEach(u => u());55}56/**57 * @param {string} browserName58 */59function apiForBrowser(browserName) {60  const events = require('../../packages/playwright-core/lib/client/events').Events;61  const api = require('../../packages/playwright-core/lib/client/api');62  const otherBrowsers = ['chromium', 'webkit', 'firefox'].filter(name => name.toLowerCase() !== browserName.toLowerCase());63  const filteredKeys = Object.keys(api).filter(apiName => {64    if (apiName.toLowerCase().startsWith('android'))65      return browserName === 'android';66    if (apiName.toLowerCase().startsWith('electron'))67      return browserName === 'electron';68    return browserName !== 'electron' && browserName !== 'android' &&69        !otherBrowsers.some(otherName => apiName.toLowerCase().startsWith(otherName));70  });71  const filteredAPI = {};72  for (const key of filteredKeys)73    filteredAPI[key] = api[key];74  return {75    api: filteredAPI,76    events77  }78}79/**80 * @param {string} browserName81 */82function installCoverageHooks(browserName) {83  const {api, events} = apiForBrowser(browserName);84  const coverage = new Map();85  const uninstall = traceAPICoverage(coverage, api, events);86  return {coverage, uninstall};87}88module.exports = {89  installCoverageHooks,...

Using AI Code Generation

1const puppeteer = require('puppeteer');2(async () => {3  const browser = await puppeteer.launch();4  const page = await browser.newPage();5  await page.coverage.startJSCoverage();6  const jsCoverage = await page.coverage.stopJSCoverage();7  await page.coverage.startCSSCoverage();8  const cssCoverage = await page.coverage.stopCSSCoverage();9  await browser.close();10})();11const puppeteer = require('puppeteer');12(async () => {13  const browser = await puppeteer.launch();14  const page = await browser.newPage();15  await page.coverage.startJSCoverage();16  const jsCoverage = await page.coverage.stopJSCoverage();17  await page.coverage.startCSSCoverage();18  const cssCoverage = await page.coverage.stopCSSCoverage();19  await browser.close();20})();21const puppeteer = require('puppeteer');22(async () => {23  const browser = await puppeteer.launch();24  const page = await browser.newPage();25  await page.coverage.startJSCoverage();26  const jsCoverage = await page.coverage.stopJSCoverage();27  await page.coverage.startCSSCoverage();28  const cssCoverage = await page.coverage.stopCSSCoverage();29  await browser.close();30})();31const puppeteer = require('puppeteer');32(async () => {33  const browser = await puppeteer.launch();34  const page = await browser.newPage();35  await page.coverage.startJSCoverage();36  const jsCoverage = await page.coverage.stopJSCoverage();37  await page.coverage.startCSSCoverage();38  const cssCoverage = await page.coverage.stopCSSCoverage();39  await browser.close();40})();

Using AI Code Generation

1const puppeteer = require('puppeteer');2const fs = require('fs');3(async () => {4  const browser = await puppeteer.launch();5  const page = await browser.newPage();6  await page.coverage.startJSCoverage();7  await page.type('input[title="Search"]', 'puppeteer');8  await page.click('input[value="Google Search"]');9  await page.waitForNavigation();10  const jsCoverage = await page.coverage.stopJSCoverage();11  fs.writeFileSync('test.json', JSON.stringify(jsCoverage));12  await browser.close();13})();14const fs = require('fs');15const puppeteer = require('puppeteer');16(async () => {17  const browser = await puppeteer.launch();18  const page = await browser.newPage();19  const json = fs.readFileSync('test.json', 'utf-8');20  const coverage = JSON.parse(json);21  await page.coverage.startJSCoverage();22  await page.coverage.stopJSCoverage();23  await page.coverage.startCSSCoverage();24  await page.coverage.stopCSSCoverage();25  await Promise.all(coverage.map(async entry => {26    await page.coverage.addScriptToEvaluateOnLoad({27    });28  }));29  await page.type('input[title="Search"]', 'puppeteer');30  await page.click('input[value="Google Search"]');31  await page.waitForNavigation();32  const jsCoverage = await page.coverage.stopJSCoverage();33  fs.writeFileSync('test.json', JSON.stringify(jsCoverage));34  await browser.close();35})();36Your name to display (optional):37Your name to display (optional):38The method traceAPICoverage() is used with the method stopTracing() which stops the tracing. The method saveAs() is used to save the trace

Using AI Code Generation

1const puppeteer = require('puppeteer');2const fs = require('fs');3(async () => {4  const browser = await puppeteer.launch();5  const page = await browser.newPage();6  await page.coverage.startJSCoverage();7  await page.coverage.startCSSCoverage();8  const jsCoverage = await page.coverage.stopJSCoverage();9  const cssCoverage = await page.coverage.stopCSSCoverage();10  const coverage = [...jsCoverage, ...cssCoverage];11  const finalCoverage = coverage.map((e) => {12    return {13    };14  });15  fs.writeFileSync('coverage.json', JSON.stringify(finalCoverage));16  await browser.close();17})();

Using AI Code Generation

1(async () => {2    const browser = await puppeteer.launch();3    const page = await browser.newPage();4    await page.coverage.startJSCoverage();5    const jsCoverage = await page.coverage.stopJSCoverage();6    console.log(jsCoverage);7    await browser.close();8})();9(async () => {10    const browser = await puppeteer.launch();11    const page = await browser.newPage();12    await page.coverage.startJSCoverage();13    const jsCoverage = await page.coverage.stopJSCoverage();14    console.log(jsCoverage);15    await browser.close();16})();17  {18  }

Using AI Code Generation

1const { traceAPICoverage } = require('puppeteer');2(async () => {3  const browser = await puppeteer.launch();4  const page = await browser.newPage();5  const coverage = await traceAPICoverage(page, () => {6  });7  for (const entry of coverage) {8    console.log(entry.url);9    for (const usage of entry.usage) {10      console.log(`  ${usage.type} ${usage.text}`);11    }12  }13  await browser.close();14})();15const { traceAPICoverage } = require('puppeteer');16(async () => {17  const browser = await puppeteer.launch();18  const page = await browser.newPage();19  const coverage = await traceAPICoverage(page, () => {20  });21  for (const entry of coverage) {22    console.log(entry.url);23    for (const usage of entry.usage) {24      console.log(`  ${usage.type} ${usage.text}`);25    }26  }27  await browser.close();28})();29const { traceAPICoverage } = require('puppeteer');30(async () => {31  const browser = await puppeteer.launch();32  const page = await browser.newPage();33  const coverage = await traceAPICoverage(page, () => {34  });35  for (const entry of coverage) {36    console.log(entry.url);37    for (const usage of entry.usage) {38      console.log(`  ${usage.type} ${usage.text}`);39    }40  }41  await browser.close();42})();43const { traceAPICoverage } = require('puppeteer');44(async () => {45  const browser = await puppeteer.launch();46  const page = await browser.newPage();47  const coverage = await traceAPICoverage(page, () => {48  });49  for (const entry of coverage

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