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Catalog / Playwright

1.39.0

2.9 years agoaddedOriginal notes

Add custom matchers to your expect

You can extend Playwright assertions by providing custom matchers. These matchers will be available on the expect object.

import { expect as baseExpect } from '@playwright/test';
export const expect = baseExpect.extend({
  async toHaveAmount(locator: Locator, expected: number, options?: { timeout?: number }) {
    // ... see documentation for how to write matchers.
  },
});

test('pass', async ({ page }) => {
  await expect(page.getByTestId('cart')).toHaveAmount(5);
});

See the documentation for a full example.

Merge test fixtures

You can now merge test fixtures from multiple files or modules:

import { mergeTests } from '@playwright/test';
import { test as dbTest } from 'database-test-utils';
import { test as a11yTest } from 'a11y-test-utils';

export const test = mergeTests(dbTest, a11yTest);
import { test } from './fixtures';

test('passes', async ({ database, page, a11y }) => {
  // use database and a11y fixtures.
});

Merge custom expect matchers

You can now merge custom expect matchers from multiple files or modules:

import { mergeTests, mergeExpects } from '@playwright/test';
import { test as dbTest, expect as dbExpect } from 'database-test-utils';
import { test as a11yTest, expect as a11yExpect } from 'a11y-test-utils';

export const test = mergeTests(dbTest, a11yTest);
export const expect = mergeExpects(dbExpect, a11yExpect);
import { test, expect } from './fixtures';

test('passes', async ({ page, database }) => {
  await expect(database).toHaveDatabaseUser('admin');
  await expect(page).toPassA11yAudit();
});

Hide implementation details: box test steps

You can mark a test.step() as "boxed" so that errors inside it point to the step call site.

async function login(page) {
  await test.step('login', async () => {
    // ...
  }, { box: true });  // Note the "box" option here.
}
Error: Timed out 5000ms waiting for expect(locator).toBeVisible()
  ... error details omitted ...

  14 |   await page.goto('https://github.com/login');
> 15 |   await login(page);
     |         ^
  16 | });

See test.step() documentation for a full example.

New APIs

Browser Versions

  • Chromium 119.0.6045.9
  • Mozilla Firefox 118.0.1
  • WebKit 17.4

This version was also tested against the following stable channels:

  • Google Chrome 118
  • Microsoft Edge 118