How to Write and Run Your First Functional Test in Drupal 10 Using PHPUnit and DDEV
Eduardo Telaya offers a clear, concise tutorial for writing a functional test in Drupal 10. The guide uses PHPUnit and DDEV, targeting developers new to Drupal’s BrowserTestBase framework. A simple example (HelloWorldTest.php) checks that the homepage loads and returns a 200 HTTP status.
The tutorial walks through creating the test file in a custom module, installing drupal/core-dev via Composer, and setting up phpunit.xml. It provides the full DDEV-based command to run the test and explains environment variables like SIMPLETEST_BASE_URL and BROWSERTEST_OUTPUT_DIRECTORY.
This article is technically accurate, practical, and well-scoped for beginners. However, it omits deeper testing strategies, such as using test fixtures or mocking services. Still, it’s a strong foundational piece that can shorten the learning curve for Drupal QA newcomers.
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