Testing & Quality

Writing code is easy; ensuring it works correctly and stays maintainable is the real challenge. This module dives deep into modern Java testing practices, moving beyond simple unit tests to robust integration testing and architectural governance.

We cover JUnit 5’s advanced features, Testcontainers for real-world integration testing with Docker, and ArchUnit for enforcing architectural rules as code.

Module Contents

  1. JUnit 5 Features Master the modern JUnit 5 platform, from the extension model and parameter resolution to dynamic tests and conditional execution.

  2. Testcontainers Learn how to spin up lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

  3. ArchUnit Enforce architectural rules in your codebase using plain Java unit tests. Prevent cycles, enforce layer boundaries, and check naming conventions.

  4. Review & Cheat Sheet Review key concepts with flashcards, a cheat sheet, and a summary of best practices.

Module Chapters