Test Automation in Business Central: Writing AL Test Codeunits

Maintaining application stability in Business Central requires robust, repeatable testing. Relying on manual validation slows down development and increases the risk of regressions in your custom AL code. This course guides you from the absolute basics of testing terminology to writing and executing your own automated tests. You will learn how to structure test code, utilize standard test libraries, and integrate modern testing practices into your development workflow. What you'll learn: Understand foundational testing concepts and the architecture of Business Central test execution; Write automated test code in AL using specialized Test Codeunits and test runner functions; Apply the Acceptance Test-Driven Development (ATDD) pattern to structure test scenarios clearly; Utilize standard Business Central test libraries and handler functions to simulate user interactions; Run and analyze standard test suites to validate custom extensions; Explore how to prepare tests for modern continuous integration (CI/CD) workflows. The course begins with essential testing terminology and setup before moving step-by-step through writing AL test code. You will read clear explanations, study structured code snippets, and practice designing test scenarios through written exercises. This course is designed for beginner Business Central developers and QA professionals who want to transition into automated testing. No prior experience with AL test codeunits is required. Start writing reliable, automated tests for Business Central today.