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Test assertions

We support performing assertions using Jest's expect framework or chai.js framework.

Following are the versions we use.

  • chai - v4.3.6
  • expect - v28.1.0

Using Jest's expect​


const { chromium } = require('playwright');
const { expect } = require('expect');

const browser = await chromium.launch();    
const page = await browser.newPage();
await page.goto('https://www.playwright.dev');
const title = await page.title();
console.log('Asserting page title');
expect(title).toBe('Fast and reliable end-to-end testing for modern web apps | Playwright');
browser.close();
caution

Starting with Jest v28, expect object must be created via named import as below. Click here for more details.

const { expect } = require('expect');

Using chai expect​

const { chromium } = require('playwright');
const { expect } = require('chai');

const browser = await chromium.launch();    
const page = await browser.newPage();
await page.goto('https://www.playwright.dev');
const title = await page.title();
console.log('Asserting page title');
expect(title).to.equal('Fast and reliable end-to-end testing for modern web apps | Playwright');
browser.close();