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Inject client configuration to playwright

Hello, In cypress, some configurations were injected using webpack preprocessor and all configuration flags were accessible in spec files. How to achieve this in playwright? any best practices to follow. Appreciate your support!

This thread is trying to answer question "How can configurations be injected in Playwright similar to how it's done in Cypress using webpack preprocessor?"

2 replies

Are you using component testing? If so, then we expose ctViteConfig: https://playwright.dev/docs/test-components#q-i-have-a-project-that-already-uses-vite-can-i-reuse-the-config

For normal end-to-end testing Playwright is framework agnostic and has nothing to do with your webpack, so it totally depends on your build setup which then surfaces the application you are testing.

@mxschmitt: No, I am using it for E2E testing. Thanks for the response.

No, I am using it for E2E testing. Thanks for the response.


Injecting Configurations in Playwright Test

To inject configurations in Playwright Test, you can create a configuration matrix. This matrix defines different combinations of devices or browsers for your tests. It's a centralized way to manage configurations, saving you time and effort.

Here's how you can get started:

  1. Install the Playwright library in your Node.js project using npm or Yarn.
  2. Require Playwright in your Node.js script and launch any of the supported browsers (Chromium, Firefox, or WebKit).
import { chromium } from '@playwright/test';

const browser = await chromium.launch();
const page = await browser.newPage();
await page.goto('https://ray.run/');
await browser.close();

Playwright APIs are asynchronous and return Promise objects. Use the async/await pattern for better readability.

For project-specific configurations, there's currently no direct support for reusing an existing Vite config within Playwright Test. However, you can copy relevant settings from your existing Vite config into the ctViteConfig property of the Playwright config object.

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

test('my test', async ({ page }) => {
  await page.goto('https://ray.run/');
  const name = await page.innerText('.name');

Remember, while copying path mappings and high-level settings might be possible, there may be other aspects of your Vite config that cannot be reused directly.

For more details, check out Mastering Playwright Test Automation: Your Comprehensive Cheat Sheet.

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Rayrun is a community for QA engineers. I am constantly looking for new ways to add value to people learning Playwright and other browser automation frameworks. If you have feedback, email luc@ray.run.