How to use expectContexts method in Playwright Internal

Best JavaScript code snippet using playwright-internal

index.test.js

Source:index.test.js

1const { JSDOM } = require("jsdom");2const findStackingContexts = require("./");3describe("findStackingContexts", () => {4  it("returns the html node last", () => {5    const dom = new JSDOM('<html><body><div id="test-el"></div></body></html>');6    const testEl = dom.window.document.getElementById("test-el");7    const contexts = findStackingContexts(testEl, dom.window);8    expect(contexts).toBeInstanceOf(Array);9    expect(contexts).toHaveLength(1);10    expect(contexts[0].nodeName).toBe("HTML");11  });12  describe("developer experience", () => {13    afterEach(() => {14      delete global.window;15    });16    it("uses the global window object if one is not supplied", () => {17      const dom = new JSDOM(18        '<html><body><div id="test-el"></div></body></html>'19      );20      const testEl = dom.window.document.getElementById("test-el");21      global.window = dom.window;22      const contexts = findStackingContexts(testEl);23      // It returned successfully.24      expect(contexts).toHaveLength(1);25    });26  });27  describe("matching elements", () => {28    // Test cases taken from MDN29    // https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Positioning/Understanding_z_index/The_stacking_context#The_stacking_context30    it("Root element of the document (<html>)", () => {31      const dom = new JSDOM(32        '<html><body><div id="test-el"></div></body></html>'33      );34      const testEl = dom.window.document.getElementById("test-el");35      const contexts = findStackingContexts(testEl, dom.window);36      expect(contexts).toBeInstanceOf(Array);37      expect(contexts).toHaveLength(1);38      expect(contexts[0].nodeName).toBe("HTML");39    });40    it("Element with a position value absolute or relative and z-index value other than auto.", () => {41      const absoluteWithNoZIndex = new JSDOM(42        `<div style="position: absolute;">43          <div id="test-el"></div>44        </div>`45      );46      const absoluteWithAutoZIndex = new JSDOM(47        `<div style="position: absolute; z-index: auto;">48          <div id="test-el"></div>49        </div>`50      );51      const absoluteWithZIndex = new JSDOM(52        `<div id="target" style="position: absolute; z-index: 1;">53          <div id="test-el"></div>54        </div>`55      );56      const relativeWithNoZIndex = new JSDOM(57        `<div style="position: relative;">58          <div id="test-el"></div>59        </div>`60      );61      const relativeWithAutoZIndex = new JSDOM(62        `<div style="position: relative; z-index: auto;">63          <div id="test-el"></div>64        </div>`65      );66      const relativeWithZIndex = new JSDOM(67        `<div id="target" style="position: relative; z-index: 1;">68          <div id="test-el"></div>69        </div>`70      );71      const expectNoContext = [72        absoluteWithNoZIndex,73        absoluteWithAutoZIndex,74        relativeWithNoZIndex,75        relativeWithAutoZIndex,76      ];77      const expectContext = [absoluteWithZIndex, relativeWithZIndex];78      expectNoContext.forEach((dom) => {79        const testEl = dom.window.document.getElementById("test-el");80        const contexts = findStackingContexts(testEl, dom.window);81        expect(contexts).toHaveLength(1);82      });83      expectContext.forEach((dom) => {84        const testEl = dom.window.document.getElementById("test-el");85        const contexts = findStackingContexts(testEl, dom.window);86        expect(contexts).toHaveLength(2);87        expect(contexts[0]).toHaveProperty("id", "target");88      });89    });90    it("Element with a position value fixed or sticky (sticky for all mobile browsers, but not older desktop).", () => {91      const fixed = new JSDOM(92        `<div id="target" style="position: fixed;">93          <div id="test-el"></div>94        </div>`95      );96      const sticky = new JSDOM(97        `<div id="target" style="position: sticky;">98          <div id="test-el"></div>99        </div>`100      );101      const expectContext = [fixed, sticky];102      expectContext.forEach((dom) => {103        const testEl = dom.window.document.getElementById("test-el");104        const contexts = findStackingContexts(testEl, dom.window);105        expect(contexts).toHaveLength(2);106        expect(contexts[0]).toHaveProperty("id", "target");107      });108    });109    it("Element that is a child of a flex (flexbox) container, with z-index value other than auto.", () => {110      const childOfFlexWithNoZIndex = new JSDOM(`111        <div style="display: flex;">112          <div>113            <div id="test-el"></div>114          </div>115        </div>116      `);117      const childOfFlexWithAutoZIndex = new JSDOM(`118        <div style="display: flex;">119          <div style="z-index: auto;">120            <div id="test-el"></div>121          </div>122        </div>123      `);124      const childOfFlexWithZIndex = new JSDOM(`125        <div style="display: flex;">126          <div id="target" style="z-index: 1;">127            <div id="test-el"></div>128          </div>129        </div>130      `);131      const expectNoContexts = [132        childOfFlexWithNoZIndex,133        childOfFlexWithAutoZIndex,134      ];135      const expectContexts = [childOfFlexWithZIndex];136      expectNoContexts.forEach((dom) => {137        const testEl = dom.window.document.getElementById("test-el");138        const contexts = findStackingContexts(testEl, dom.window);139        expect(contexts).toHaveLength(1);140      });141      expectContexts.forEach((dom) => {142        const testEl = dom.window.document.getElementById("test-el");143        const contexts = findStackingContexts(testEl, dom.window);144        expect(contexts).toHaveLength(2);145        expect(contexts[0]).toHaveProperty("id", "target");146      });147    });148    it("Element that is a child of a grid (grid) container, with z-index value other than auto.", () => {149      const childOfGridWithNoZIndex = new JSDOM(`150        <div style="display: grid;">151          <div>152            <div id="test-el"></div>153          </div>154        </div>155      `);156      const childOfGridWithAutoZIndex = new JSDOM(`157        <div style="display: grid;">158          <div style="z-index: auto;">159            <div id="test-el"></div>160          </div>161        </div>162      `);163      const childOfGridWithZIndex = new JSDOM(`164        <div style="display: grid;">165          <div id="target" style="z-index: 1;">166            <div id="test-el"></div>167          </div>168        </div>169      `);170      const expectNoContexts = [171        childOfGridWithNoZIndex,172        childOfGridWithAutoZIndex,173      ];174      const expectContexts = [childOfGridWithZIndex];175      expectNoContexts.forEach((dom) => {176        const testEl = dom.window.document.getElementById("test-el");177        const contexts = findStackingContexts(testEl, dom.window);178        expect(contexts).toHaveLength(1);179      });180      expectContexts.forEach((dom) => {181        const testEl = dom.window.document.getElementById("test-el");182        const contexts = findStackingContexts(testEl, dom.window);183        expect(contexts).toHaveLength(2);184        expect(contexts[0]).toHaveProperty("id", "target");185      });186    });187    it("Element with a opacity value less than 1 (See the specification for opacity).", () => {188      const opacityOfOne = new JSDOM(`189        <div style="opacity: 1;">190          <div id="test-el"></div>191        </div>192      `);193      const opacityOfFiveTenths = new JSDOM(`194        <div id="target" style="opacity: 0.5;">195          <div id="test-el"></div>196        </div>197      `);198      const opacityOfZero = new JSDOM(`199        <div id="target" style="opacity: 0;">200          <div id="test-el"></div>201        </div>202      `);203      const expectNoContexts = [opacityOfOne];204      const expectContexts = [opacityOfFiveTenths, opacityOfZero];205      expectNoContexts.forEach((dom) => {206        const testEl = dom.window.document.getElementById("test-el");207        const contexts = findStackingContexts(testEl, dom.window);208        expect(contexts).toHaveLength(1);209      });210      expectContexts.forEach((dom) => {211        const testEl = dom.window.document.getElementById("test-el");212        const contexts = findStackingContexts(testEl, dom.window);213        expect(contexts).toHaveLength(2);214        expect(contexts[0]).toHaveProperty("id", "target");215      });216    });217    it("Element with a mix-blend-mode value other than normal.", () => {218      const mixBlendModeNormal = new JSDOM(`219        <div style="mix-blend-mode: normal;">220          <div id="test-el"></div>221        </div>222      `);223      const mixBlendModeMultiply = new JSDOM(`224        <div id="target" style="mix-blend-mode: multiply;">225          <div id="test-el"></div>226        </div>227      `);228      const expectNoContexts = [mixBlendModeNormal];229      const expectContexts = [mixBlendModeMultiply];230      expectNoContexts.forEach((dom) => {231        const testEl = dom.window.document.getElementById("test-el");232        const contexts = findStackingContexts(testEl, dom.window);233        expect(contexts).toHaveLength(1);234      });235      expectContexts.forEach((dom) => {236        const testEl = dom.window.document.getElementById("test-el");237        const contexts = findStackingContexts(testEl, dom.window);238        expect(contexts).toHaveLength(2);239        expect(contexts[0]).toHaveProperty("id", "target");240      });241    });242    describe("Element with any of the following properties with value other than `none`:", () => {243      const properties = [244        "transform",245        "filter",246        // NOTE: `perspective` does not seem to be supported by the JSDOM CSSOM247        // "perspective",248        "clip-path",249        "mask",250        "mask-image",251        "mask-border",252      ];253      properties.forEach((property) => {254        // Disabling because `property` is promised to be a string255        // eslint-disable-next-line jest/valid-title256        it(property, () => {257          const propertyWithNone = new JSDOM(`258            <div style="${property}: none;">259              <div id="test-el"></div>260            </div>261          `);262          const propertyWithRandomValue = new JSDOM(`263            <div id="target" style="${property}: random-value;">264              <div id="test-el"></div>265            </div>266          `);267          const expectNoContexts = [propertyWithNone];268          const expectContexts = [propertyWithRandomValue];269          expectNoContexts.forEach((dom) => {270            const testEl = dom.window.document.getElementById("test-el");271            const contexts = findStackingContexts(testEl, dom.window);272            expect(contexts).toHaveLength(1);273          });274          expectContexts.forEach((dom) => {275            const testEl = dom.window.document.getElementById("test-el");276            const contexts = findStackingContexts(testEl, dom.window);277            expect(contexts).toHaveLength(2);278            expect(contexts[0]).toHaveProperty("id", "target");279          });280        });281      });282    });283    it("Element with a `isolation` value `isolate`.", () => {284      const isolationInitial = new JSDOM(`285        <div style="isolation: initial;">286          <div id="test-el"></div>287        </div>288      `);289      const isolationIsolate = new JSDOM(`290        <div id="target" style="isolation: isolate;">291          <div id="test-el"></div>292        </div>293      `);294      const expectNoContexts = [isolationInitial];295      const expectContexts = [isolationIsolate];296      expectNoContexts.forEach((dom) => {297        const testEl = dom.window.document.getElementById("test-el");298        const contexts = findStackingContexts(testEl, dom.window);299        expect(contexts).toHaveLength(1);300      });301      expectContexts.forEach((dom) => {302        const testEl = dom.window.document.getElementById("test-el");303        const contexts = findStackingContexts(testEl, dom.window);304        expect(contexts).toHaveLength(2);305        expect(contexts[0]).toHaveProperty("id", "target");306      });307    });308    // Skipped because JSDOM CSSOM does support the vendor prefixed value.309    // eslint-disable-next-line jest/no-disabled-tests310    it.skip("Element with a `-webkit-overflow-scrolling` value `touch`.", () => {311      const webkitOverflowScrollingInitial = new JSDOM(`312        <div style="-webkit-overflow-scrolling: initial;">313          <div id="test-el"></div>314        </div>315      `);316      const WebkitOverflowScrollingTouch = new JSDOM(`317        <div id="target" style="-webkit-overflow-scrolling: touch;">318          <div id="test-el"></div>319        </div>320      `);321      const expectNoContexts = [webkitOverflowScrollingInitial];322      const expectContexts = [WebkitOverflowScrollingTouch];323      expectNoContexts.forEach((dom) => {324        const testEl = dom.window.document.getElementById("test-el");325        const contexts = findStackingContexts(testEl, dom.window);326        expect(contexts).toHaveLength(1);327      });328      expectContexts.forEach((dom) => {329        const testEl = dom.window.document.getElementById("test-el");330        const contexts = findStackingContexts(testEl, dom.window);331        expect(contexts).toHaveLength(2);332        expect(contexts[0]).toHaveProperty("id", "target");333      });334    });335    it("Element with a will-change value specifying any property that would create a stacking context on non-initial value", () => {336      const nonStackingValue = new JSDOM(`337          <div style="will-change: display">338            <div id="test-el"></div>339          </div>340        `);341      const stackingValue = new JSDOM(`342          <div id="target" style="will-change: position">343            <div id="test-el"></div>344          </div>345        `);346      const stackingValueInList = new JSDOM(`347          <div id="target" style="will-change: font, position;">348            <div id="test-el"></div>349          </div>350        `);351      const expectNoContexts = [nonStackingValue];352      const expectContexts = [stackingValue, stackingValueInList];353      expectNoContexts.forEach((dom) => {354        const testEl = dom.window.document.getElementById("test-el");355        const contexts = findStackingContexts(testEl, dom.window);356        expect(contexts).toHaveLength(1);357      });358      expectContexts.forEach((dom) => {359        const testEl = dom.window.document.getElementById("test-el");360        const contexts = findStackingContexts(testEl, dom.window);361        expect(contexts).toHaveLength(2);362        expect(contexts[0]).toHaveProperty("id", "target");363      });364    });365    it("Element with a contain value of layout, or paint, or a composite value that includes either of them.", () => {366      const noContainValue = new JSDOM(`367        <div style="contain: size">368          <div id="test-el"></div>369        </div>370      `);371      const containLayout = new JSDOM(`372        <div id="target" style="contain: layout;">373          <div id="test-el"></div>374        </div>375      `);376      const containPaint = new JSDOM(`377        <div id="target" style="contain: paint;">378          <div id="test-el"></div>379        </div>380      `);381      const containSizeLayoutPaint = new JSDOM(`382        <div id="target" style="contain: size layout paint;">383          <div id="test-el"></div>384        </div>385      `);386      const containStrict = new JSDOM(`387        <div id="target" style="contain: strict;">388          <div id="test-el"></div>389        </div>390      `);391      const containContent = new JSDOM(`392        <div id="target" style="contain: content;">393          <div id="test-el"></div>394        </div>395      `);396      const expectNoContexts = [noContainValue];397      const expectContexts = [398        containLayout,399        containPaint,400        containSizeLayoutPaint,401        containStrict,402        containContent,403      ];404      expectNoContexts.forEach((dom) => {405        const testEl = dom.window.document.getElementById("test-el");406        const contexts = findStackingContexts(testEl, dom.window);407        expect(contexts).toHaveLength(1);408      });409      expectContexts.forEach((dom) => {410        const testEl = dom.window.document.getElementById("test-el");411        const contexts = findStackingContexts(testEl, dom.window);412        expect(contexts).toHaveLength(2);413        expect(contexts[0]).toHaveProperty("id", "target");414      });415    });416  });417  it("properly skips over invalid contexts", () => {418    const noValidPosition = new JSDOM(`419      <div id="target" style="z-index: 1;">420        <div id="test-el"></div>421      </div>422    `);423    const expectNoContexts = [noValidPosition];424    expectNoContexts.forEach((dom) => {425      const testEl = dom.window.document.getElementById("test-el");426      const contexts = findStackingContexts(testEl, dom.window);427      expect(contexts).toHaveLength(1);428    });429  });...

Using AI Code Generation

1const { test, expect } = require('@playwright/test');2test.describe('test', () => {3  test.beforeEach(async ({ page }) => {4  });5  test('test', async ({ page }) => {6    await page.click('text=Get Started');7  });8});9const { test, expect } = require('@playwright/test');10test.describe('test', () => {11  test.beforeEach(async ({ page }) => {12  });13  test('test', async ({ page }) => {14    await page.click('text=Get Started');15  });16});17const { test, expect } = require('@playwright/test');18test.describe('test', () => {19  test.beforeEach(async ({ page }) => {20  });21  test('test', async ({ page }) => {22    await page.click('text=Get Started');23  });24});25const { test, expect } = require('@playwright/test');26test.describe('test', () => {27  test.beforeEach(async ({ page }) => {28  });29  test('test', async ({ page }) => {30    await page.click('text=Get Started');31  });32});33const { test, expect } = require('@playwright/test');34test.describe('test', () => {35  test.beforeEach(async ({ page }) => {36  });37  test('test', async ({ page }) => {38    await page.click('text=Get Started');

Using AI Code Generation

1const { expectContexts } = require('playwright-core/lib/server/browserType');2const { chromium } = require('playwright-core');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  await context.newPage();7  await expectContexts(browser, 1);8  await browser.close();9})();

Using AI Code Generation

1const { expectContexts } = require('@playwright/test/lib/server/traceViewer/api');2const { test } = require('@playwright/test');3test('test', async ({ page }) => {4  expectContexts([5    {6    },7  ]);8});9expectContexts(contexts)10expectContexts([11  {12  },13]);

Using AI Code Generation

1const { test, expect } = require('@playwright/test');2const { expectContexts } = require('@playwright/test/lib/server/expectContexts');3test('expectContexts', async ({ context, page }) => {4  await expectContexts(context, [5    {6    },7  ]);8});9const { test, expect } = require('@playwright/test');10test('expect', async ({ context, page }) => {11  const newPage = await context.newPage();12  await expect(newPage).toHaveTitle('Playwright: Node.js library to automate Chromium, Firefox and WebKit');13});14const { test, expect } = require('@playwright/test');15test('expect', async ({ context, page }) => {16  const newPage = await context.newPage();17  await expect(context).toHaveTitle('Playwright: Node.js library to automate Chromium, Firefox and WebKit');18});

Using AI Code Generation

1const { expectContexts } = require('@playwright/test/lib/server/expect');2const { expect } = require('expect');3(async () => {4  const contexts = await expectContexts();5  expect(contexts.length).toBe(1);6  expect(contexts[0].name).toBe('default');7  expect(contexts[0].pageCount).toBe(1);8})();

Using AI Code Generation

1const { expectContexts } = require('playwright/lib/server/browserContext');2const { expect } = require('chai');3describe('test', () => {4  it('test', () => {5    expectContexts(contexts, expectedContexts);6  });7});8You are not. The expectContexts method is not exported from the playwright module. You can use it by importing it directly from the playwright/lib/server/browserContext module:9const { expectContexts } = require('playwright/lib/server/browserContext');

Using AI Code Generation

1const { chromium } = require('playwright');2const { expectContexts } = require('playwright/lib/server/browserContext');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  await context.close();7  await expectContexts(browser, { created: 1, destroyed: 1 });8  await browser.close();9})();

Using AI Code Generation

1const { expectContexts } = require('@playwright/test/internal');2const { expect } = require('expect');3const { expectContexts } = require('@playwright/test/internal');4const { expect } = require('expect');5test.describe('My Test Suite', () => {6  test('My Test', async ({ page }) => {7  });8});9import { expectContexts } from '@playwright/test/internal';10import { expect } from 'expect';11test.describe('My Test Suite', () => {12  test('My Test', async ({ page }) => {13  });14});15const { expectContexts } = require('@playwright/test/internal');16const { expect } = require('expect');17describe('My Test Suite', () => {18  it('My Test', async ({ page }) => {

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.

Chapters:

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.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
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.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.