The test modules were getting huge, and some of its functions were actually a huge amount of code due to macros, causing tests to take a long time just to compile. They are now separated into a few different tests, and the scalar macros especially are now expanded more sparingly in just a few `check()` functions. Test compile times for me went from about 25 seconds to 1.5s in debug mode, and from 300 seconds (!) to about 8s in release mode.