How does the SysTest framework help developers create automated unit tests for X++ business logic?

Understand how the SysTest framework enables Dynamics 365 Finance and Operations developers to automate testing of X++ business logic and reduce regression risks. Explore test classes, test methods, assertions, test data, isolation, and best practices for designing maintainable tests. Discuss how automated tests can validate business rules before code reaches higher environments. Consider how effective unit testing supports safer extensibility and continuous integration practices in D365 Finance & Operations.