Excuse me, but can you show me where in the SQL language documentation examples I can find how info about its unit test harness framework, teedeedee best practi

Excuse me, but can you show me where in the SQL language documentation examples I can find how info about its unit test harness framework, teedeedee best practices, mocking, shimming, and dependency injection? And that's just the bare minimum but I start with those as the first thing to learn in any new language.