http-kernel VS Symfony Panther

The compiling of the extension configurations is actually done in a compiler pass. This is called the Merge Pass and is the first compiler pass to be processed. Because of this, once our custom compiler pass reads the configuration of off the extension, we can be sure it is already compiled, cached and ready for use.

I present you the Symfony ControllerEvent, final class, no interface and a boatload of heavy dependencies.

In that regard, someone posted symfony's test suite as an example of good PHPUnit testing. The first file I clicked on demonstrated how worthless (IMO) unit testing can be: https://github.com/symfony/http-kernel/blob/v6.0.8/Tests/CacheClearer/ChainCacheClearerTest.php

The second one was in the Symfony HTTP kernel which is managed by Composer. That file contains this line:

You can also define routes in the method directly:

Use some library with WebDriver API (f.ex. Symfony Panther if you want to stick to PHP, or Playwright) to run tests against your WP backend

Personal experience: - don’t use Behat unless you really needed a “story telling”, it has a intermediate layer Gherkin that you’ll need to code. You can write “Given/When/Then” steps but you’ll also need to write “php code” that will interpret this step. - using real browser be prepared for instability - any interaction with JavaScript can broken/delay execution - be prepared that this tests are call functional they are the most expensive test, so start small unit then integration and only then functional. - use https://github.com/symfony/panther or https://codeception.com/ you’ll have phpunit alike interface to run them. - you’ll need to reset state of your database each time to provide “isolation” and stability

For headless browser testing with symfony there is symfony panther (https://github.com/symfony/panther)

I did something similar with Symfony Panther combined with ChromeDriver.

For tools, I use PHPUnit, Symfony's PHPUnit helper classes, and Panther (for frontend/headless-browser testing, mostly JS behavior)

If you are comfortable with using composer and third party libraries I would suggest checking out https://github.com/symfony/panther

I like this one recently https://github.com/symfony/panther

Panther

What you're looking for is a package to control a "headless browser". The best one IMO is symfony/panther: https://github.com/symfony/panther