JUnit Platform Fundamentals: Test Discovery and Execution

JUnit Platform is the foundation for modern testing in Java, providing a powerful, extensible architecture for discovering and running tests. Understanding its inner workings is crucial for optimizing your development workflow and ensuring reliable software delivery. By completing this course, you will move beyond simply annotating methods and gain the architectural knowledge needed to manage the entire testing lifecycle. You will learn how tests are discovered, how execution is controlled using core APIs, and how to integrate these concepts into professional build pipelines. What you'll learn: * Understand the fundamental architecture of the JUnit Platform, including the roles of the TestEngine and the Launcher. * Apply the Launcher API to programmatically discover, select, and execute tests outside of standard build tool environments. * Practice using selectors and filters (like tags and patterns) to precisely control which tests run during execution. * Configure test execution environments and integrate the Platform with common build tools like Maven and Gradle. * Master advanced execution techniques such as conditional test disabling and basic parameterized tests for data-driven testing. The course begins by defining the core components of the JUnit Platform architecture and explaining the test discovery process. We then transition into practical application, demonstrating how to use the Launcher API for execution control and how to apply filtering techniques for efficient test management. This program is designed for new or aspiring Java developers and engineers who want a foundational understanding of modern testing frameworks. No prior experience with JUnit is required. Start building more reliable and configurable tests today.