It’s a long time I purpose to have some test files in IFC schema/spec docs and also “validation and best practice purposes” like what CAx, CAE, MBx do in the PLM area
For instance, some companies can pass “Hello Wall” as a simple test, but they fail in the medium and complex and also large projects
For instance, as Hans shared a test video, it takes a day to import a medium-sized IFC file in some software 