Answer

Setting Up Android App Testing with Playwright

First, ensure you have an Android device or AVD emulator, and the ADB daemon running and authenticated with your device. Chrome 87 or newer should be installed on the device, with "Enable command line on non-rooted devices" enabled in chrome://flags.

Here's an example of an Android automation script using Playwright. This script connects to the device and takes a screenshot of it. It also launches an application with WebView and interacts with it by filling input boxes and pressing buttons.

// TypeScript code example
import { test, expect } from '@playwright/test';

test('Android test', async ({ android }) => {
  const device = await android.launch();
  const context = await device.newContext();
  await context.goto('https://ray.run');
  const screenshot = await context.screenshot();
  expect(screenshot).toBeTruthy();
});

Keep your Playwright dependency up to date to test your app on the latest browser versions and catch failures before they are released to the public. Run npm install -D @playwright/test@latest and check the release notes for changes.

To run tests on CI/CD, set up a workflow using GitHub actions or another CI environment of your choice. Tests should be run frequently, ideally on each commit and pull request, to catch issues early.

Playwright runs tests in parallel by default but allows for further parallelism through sharding if needed. Tests can be configured for parallel mode using test.describe.configure({ mode: 'parallel' });.

For more information, check out Playwright Mobile App Testing for Android: A Comprehensive Guide and Maximizing Test Efficiency with Parallelism in Playwright.