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How to use stopCSSCoverage method in Playwright Internal

Best JavaScript code snippet using playwright-internal

coverage.spec.js

Source:coverage.spec.js

...120  describe('CSSCoverage', function() {121    it('should work', async function({page, server}) {122      await page.coverage.startCSSCoverage();123      await page.goto(server.PREFIX + '/csscoverage/simple.html');124      const coverage = await page.coverage.stopCSSCoverage();125      expect(coverage.length).toBe(1);126      expect(coverage[0].url).toContain('/csscoverage/simple.html');127      expect(coverage[0].ranges).toEqual([128        {start: 1, end: 22}129      ]);130      const range = coverage[0].ranges[0];131      expect(coverage[0].text.substring(range.start, range.end)).toBe('div { color: green; }');132    });133    it('should report sourceURLs', async function({page, server}) {134      await page.coverage.startCSSCoverage();135      await page.goto(server.PREFIX + '/csscoverage/sourceurl.html');136      const coverage = await page.coverage.stopCSSCoverage();137      expect(coverage.length).toBe(1);138      expect(coverage[0].url).toBe('nicename.css');139    });140    it('should report multiple stylesheets', async function({page, server}) {141      await page.coverage.startCSSCoverage();142      await page.goto(server.PREFIX + '/csscoverage/multiple.html');143      const coverage = await page.coverage.stopCSSCoverage();144      expect(coverage.length).toBe(2);145      coverage.sort((a, b) => a.url.localeCompare(b.url));146      expect(coverage[0].url).toContain('/csscoverage/stylesheet1.css');147      expect(coverage[1].url).toContain('/csscoverage/stylesheet2.css');148    });149    it('should report stylesheets that have no coverage', async function({page, server}) {150      await page.coverage.startCSSCoverage();151      await page.goto(server.PREFIX + '/csscoverage/unused.html');152      const coverage = await page.coverage.stopCSSCoverage();153      expect(coverage.length).toBe(1);154      expect(coverage[0].url).toBe('unused.css');155      expect(coverage[0].ranges.length).toBe(0);156    });157    it('should work with media queries', async function({page, server}) {158      await page.coverage.startCSSCoverage();159      await page.goto(server.PREFIX + '/csscoverage/media.html');160      const coverage = await page.coverage.stopCSSCoverage();161      expect(coverage.length).toBe(1);162      expect(coverage[0].url).toContain('/csscoverage/media.html');163      expect(coverage[0].ranges).toEqual([164        {start: 17, end: 38}165      ]);166    });167    it('should work with complicated usecases', async function({page, server}) {168      await page.coverage.startCSSCoverage();169      await page.goto(server.PREFIX + '/csscoverage/involved.html');170      const coverage = await page.coverage.stopCSSCoverage();171      expect(JSON.stringify(coverage, null, 2).replace(/:\d{4}\//g, ':<PORT>/')).toBeGolden('csscoverage-involved.txt');172    });173    it('should ignore injected stylesheets', async function({page, server}) {174      await page.coverage.startCSSCoverage();175      await page.addStyleTag({content: 'body { margin: 10px;}'});176      // trigger style recalc177      const margin = await page.evaluate(() => window.getComputedStyle(document.body).margin);178      expect(margin).toBe('10px');179      const coverage = await page.coverage.stopCSSCoverage();180      expect(coverage.length).toBe(0);181    });182    describe('resetOnNavigation', function() {183      it('should report stylesheets across navigations', async function({page, server}) {184        await page.coverage.startCSSCoverage({resetOnNavigation: false});185        await page.goto(server.PREFIX + '/csscoverage/multiple.html');186        await page.goto(server.EMPTY_PAGE);187        const coverage = await page.coverage.stopCSSCoverage();188        expect(coverage.length).toBe(2);189      });190      it('should NOT report scripts across navigations', async function({page, server}) {191        await page.coverage.startCSSCoverage(); // Enabled by default.192        await page.goto(server.PREFIX + '/csscoverage/multiple.html');193        await page.goto(server.EMPTY_PAGE);194        const coverage = await page.coverage.stopCSSCoverage();195        expect(coverage.length).toBe(0);196      });197    });198    it('should work with a recently loaded stylesheet', async function({page, server}) {199      await page.coverage.startCSSCoverage();200      await page.evaluate(async url => {201        document.body.textContent = 'hello, world';202        const link = document.createElement('link');203        link.rel = 'stylesheet';204        link.href = url;205        document.head.appendChild(link);206        await new Promise(x => link.onload = x);207      }, server.PREFIX + '/csscoverage/stylesheet1.css');208      const coverage = await page.coverage.stopCSSCoverage();209      expect(coverage.length).toBe(1);210    });211  });...

coverage.js

Source:coverage.js

...154test.serial('CSSCoverage should work', async t => {155  const { page, server } = t.context156  await page.coverage.startCSSCoverage()157  await page.goto(server.PREFIX + '/csscoverage/simple.html')158  const coverage = await page.coverage.stopCSSCoverage()159  t.is(coverage.length, 1)160  t.true(coverage[0].url.includes('/csscoverage/simple.html'))161  t.deepEqual(coverage[0].ranges, [{ start: 1, end: 22 }])162  const range = coverage[0].ranges[0]163  t.is(164    coverage[0].text.substring(range.start, range.end),165    'div { color: green; }'166  )167})168test.serial('CSSCoverage should report sourceURLs', async t => {169  const { page, server } = t.context170  await page.coverage.startCSSCoverage()171  await page.goto(server.PREFIX + '/csscoverage/sourceurl.html')172  const coverage = await page.coverage.stopCSSCoverage()173  t.is(coverage.length, 1)174  t.is(coverage[0].url, 'nicename.css')175})176test.serial('CSSCoverage should report multiple stylesheets', async t => {177  const { page, server } = t.context178  await page.coverage.startCSSCoverage()179  await page.goto(server.PREFIX + '/csscoverage/multiple.html')180  const coverage = await page.coverage.stopCSSCoverage()181  t.is(coverage.length, 2)182  coverage.sort((a, b) => a.url.localeCompare(b.url))183  t.true(coverage[0].url.includes('/csscoverage/stylesheet1.css'))184  t.true(coverage[1].url.includes('/csscoverage/stylesheet2.css'))185})186test.serial(187  'CSSCoverage should report stylesheets that have no coverage',188  async t => {189    const { page, server } = t.context190    await page.coverage.startCSSCoverage()191    await page.goto(server.PREFIX + '/csscoverage/unused.html')192    const coverage = await page.coverage.stopCSSCoverage()193    t.is(coverage.length, 1)194    t.is(coverage[0].url, 'unused.css')195    t.is(coverage[0].ranges.length, 0)196  }197)198test.serial('CSSCoverage should work with media queries', async t => {199  const { page, server } = t.context200  await page.coverage.startCSSCoverage()201  await page.goto(server.PREFIX + '/csscoverage/media.html')202  const coverage = await page.coverage.stopCSSCoverage()203  t.is(coverage.length, 1)204  t.true(coverage[0].url.includes('/csscoverage/media.html'))205  t.deepEqual(coverage[0].ranges, [{ start: 17, end: 38 }])206})207test.serial('CSSCoverage should work with complicated usecases', async t => {208  const { page, server } = t.context209  await page.coverage.startCSSCoverage()210  await page.goto(server.PREFIX + '/csscoverage/involved.html')211  const coverage = await page.coverage.stopCSSCoverage()212  t.context.toBeGolden(213    t,214    JSON.stringify(coverage, null, 2).replace(/:\d{4}\//g, ':<PORT>/'),215    'csscoverage-involved.txt'216  )217})218test.serial('CSSCoverage should ignore injected stylesheets', async t => {219  const { page, server } = t.context220  await page.coverage.startCSSCoverage()221  await page.addStyleTag({ content: 'body { margin: 10px;}' })222  // trigger style recalc223  const margin = await page.evaluate(224    () => window.getComputedStyle(document.body).margin225  )226  t.is(margin, '10px')227  const coverage = await page.coverage.stopCSSCoverage()228  t.is(coverage.length, 0)229})230test.serial(231  'CSSCoverage - resetOnNavigation: should report stylesheets across navigations',232  async t => {233    const { page, server } = t.context234    await page.coverage.startCSSCoverage({ resetOnNavigation: false })235    await page.goto(server.PREFIX + '/csscoverage/multiple.html')236    await page.goto(server.EMPTY_PAGE)237    const coverage = await page.coverage.stopCSSCoverage()238    t.is(coverage.length, 2)239  }240)241test.serial(242  'CSSCoverage - resetOnNavigation: should NOT report scripts across navigations',243  async t => {244    const { page, server } = t.context245    await page.coverage.startCSSCoverage() // Enabled by default.246    await page.goto(server.PREFIX + '/csscoverage/multiple.html')247    await page.goto(server.EMPTY_PAGE)248    const coverage = await page.coverage.stopCSSCoverage()249    t.is(coverage.length, 0)250  }251)252test.serial(253  'CSSCoverage should work with a recently loaded stylesheet',254  async t => {255    const { page, server } = t.context256    await page.coverage.startCSSCoverage()257    await page.evaluate(async url => {258      document.body.textContent = 'hello, world'259      const link = document.createElement('link')260      link.rel = 'stylesheet'261      link.href = url262      document.head.appendChild(link)263      await new Promise(x => (link.onload = x))264    }, server.PREFIX + '/csscoverage/stylesheet1.css')265    const coverage = await page.coverage.stopCSSCoverage()266    t.is(coverage.length, 1)267  }...

setup.test.js

Source:setup.test.js

...16    )17    await page.click('#setup > div:nth-child(10) > input[type=button]')18    const [jsCoverage, cssCoverage] = await Promise.all([19        page.coverage.stopJSCoverage(),20        page.coverage.stopCSSCoverage(),21    ]);22    pti.write([...jsCoverage, ...cssCoverage], { includeHostname: true , storagePath: './.nyc_output' })23    await browser.close()24})25test("test start game click - 4 players", async () => {26    const browser = await puppeteer.launch({27    })28    const page = await browser.newPage()29    // Enable both JavaScript and CSS coverage30    await Promise.all([31        page.coverage.startJSCoverage([false, false]),32        page.coverage.startCSSCoverage()33    ]);34    await page.goto(35        'file:///Users/anirudhsharma/Documents/Semester8_College/STAD/Final%20Project/MonopolyTestFinalProj/monopoly-master1/index.html'36    )37    const [jsCoverage, cssCoverage] = await Promise.all([38        page.coverage.stopJSCoverage(),39        page.coverage.stopCSSCoverage(),40    ]);41    pti.write([...jsCoverage, ...cssCoverage], { includeHostname: true , storagePath: './.nyc_output' })42    await browser.close()...

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  await page.coverage.startCSSCoverage();7  const cssCoverage = await page.coverage.stopCSSCoverage();8  console.log(cssCoverage);9  await browser.close();10})();11#### coverage.startJSCoverage([options])12#### coverage.stopJSCoverage()13#### coverage.startCSSCoverage([options])14#### coverage.stopCSSCoverage()

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  await page.coverage.startCSSCoverage();6  const cssCoverage = await page.coverage.stopCSSCoverage();7  console.log(cssCoverage);8  await browser.close();9})();10* **Anshul Gupta** - *Initial work* - [anshulrgupta](

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  await page.coverage.startCSSCoverage();7  const cssCoverage = await page.coverage.stopCSSCoverage();8  console.log(cssCoverage);9  await browser.close();10})();

Using AI Code Generation

1const playwright = require('playwright');2(async () => {3    const browser = await playwright.chromium.launch();4    const context = await browser.newContext();5    const page = await context.newPage();6    await page.coverage.startCSSCoverage();7    const coverage = await page.coverage.stopCSSCoverage();8    console.log(coverage);9    await browser.close();10})();

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    const [cssCoverage] = await Promise.all([7        page.coverage.startCSSCoverage(),8    ]);9    const coverage = await cssCoverage.stopCSSCoverage();10    console.log(coverage);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 browser.close();19})();20const { chromium } = require('playwright');21(async () => {22    const browser = await chromium.launch({ headless: false });23    const context = await browser.newContext();24    const page = await context.newPage();25    await browser.close();26})();27const { chromium } = require('playwright');28(async () => {29    const browser = await chromium.launch({ headless: false, defaultViewport: { width: 1280, height: 720 } });30    const context = await browser.newContext();31    const page = await context.newPage();32    await browser.close();33})();34const { chromium } = require('playwright');35(async () => {36    const browser = await chromium.launch({ headless: false, defaultViewport: { width: 1280, height: 720 } });37    const context1 = await browser.newContext();38    const page1 = await context1.newPage();

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  await page.coverage.startCSSCoverage();7  const coverage = await page.coverage.stopCSSCoverage();8  console.log(coverage);9  await browser.close();10})();

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  await page.coverage.startCSSCoverage();7  const cssCoverage = await page.coverage.stopCSSCoverage();8  console.log(cssCoverage);9  await browser.close();10})();

Using AI Code Generation

1const { chromium } = require('playwright');2const fs = require('fs');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  const client = await page.context().newCDPSession(page);8  await client.send('CSS.startRuleUsageTracking');9  const result = await client.send('CSS.stopRuleUsageTracking');10  fs.writeFile('cssCoverage.json', JSON.stringify(result), (error) => {11    if (error) {12      console.log(error);13    }14  });15  await browser.close();16})();17{18    {19    },20    {21    },22    {23    },24    {25    },26    {27    },28    {29    },30    {31    },32    {33    },34    {35    },36    {

Using AI Code Generation

1const playwright = require('playwright');2const { chromium } = playwright;3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  const [cssCoverage] = await Promise.all([8    page.coverage.startCSSCoverage(),9    page.click('input[name="btnK"]'),10  ]);11  const coverage = await cssCoverage.stopCSSCoverage();12  console.log(coverage);13  await browser.close();14})();15const playwright = require('playwright');16const { chromium } = playwright;17(async () => {18  const browser = await chromium.launch();19  const context = await browser.newContext();20  const page = await context.newPage();21  const [jsCoverage] = await Promise.all([22    page.coverage.startJSCoverage(),23    page.click('input[name="btnK"]'),24  ]);25  const coverage = await jsCoverage.stopJSCoverage();26  console.log(coverage);27  await browser.close();28})();29const playwright = require('playwright');30const { chromium } = playwright;31(async () => {32  const browser = await chromium.launch();33  const context = await browser.newContext();34  const page = await context.newPage();35  const [jsCoverage] = await Promise.all([36    page.coverage.startJSCoverage(),37    page.click('input[name="btnK"]'),38  ]);39  const coverage = await jsCoverage.stopJSCoverage();40  console.log(coverage);41  await browser.close();42})();43const playwright = require('playwright');44const { chromium } = playwright;45(async () => {46  const browser = await chromium.launch();47  const context = await browser.newContext();48  const page = await context.newPage();

Using AI Code Generation

1const coverage = await page.stopCSSCoverage();2console.log(coverage);3### `page.stopJSCoverage()`4const coverage = await page.stopJSCoverage();5console.log(coverage);6### `page.stopTracing()`7const trace = await page.stopTracing();8console.log(trace);9const trace = page.tracing;10console.log(trace);11### `page.waitForFileChooser()`12const fileChooser = await page.waitForFileChooser();13console.log(fileChooser);14### `page.waitForFunction(pageFunction[, options[, ...args]])`

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