Dive into an 80-minute tutorial on Test Driven Development (TDD) using PHPUnit in Symfony. Build a service that makes HTTP requests to an API and stores data in a database. Learn to create SQLite in-memory test databases, write unit and feature tests, develop console commands, and work with custom client classes. Explore integration testing, inject the Symfony HttpClient component, and utilize the Serializer component for entity deserialization. Master techniques for loosely coupled code, test fakes, and test group segmentation. Gain insights on handling non-200 status code responses, creating development databases with Symfony/Docker integration, and managing unexpected API errors. Access source code, additional resources, and social media links for further learning and support.