From Wiktionary, the free dictionary

type testing (uncountable)

1. Testing or other activities that determine whether a process, product, or service complies with the requirements of a specification, technical standard, contract, or regulation.

   • 2024 December 27, Pip Dunn, “Network News: Hitachi pushes on with '810' assembly and testing”, in RAIL, number 1025, pages 20-21:

     The type testing phase is critical for ensuring the new fleet meets all regulatory standards. Presently 810001/003-005/007 are being used for type testing, with vehicles from 810002/027 also involved in climate chamber and strain gauge testing.