Now, a final couple of notes on the code on GitHub and the code examples in the book.
Notes on the AL code
VS Code versus C/SIDE
This book has been focused completely on the modern way of developing a feature, by means of an extension, for Microsoft Dynamics 365 Business Central. The code on GitHub and the code examples in the book are, therefore, all in the AL language. But all of the principles that have been presented and used do also apply to developing automated tests in C/SIDE, this being the development environment for Microsoft Dynamics NAV. At this very moment, the standard application and test code of Business Central is still provided by Microsoft in C/SIDE objects.