In engineering and its various subdisciplines, acceptance testing is a test conducted to determine if the requirements of a specification or contract are met. It may involve chemical tests, physical tests, or performance tests.
Acceptance testing of an aircraft catapult
Six of the primary mirrors of the James Webb Space Telescope being prepared for acceptance testing
Software testing is the act of checking whether software satisfies expectations.
TestingCup - Polish Championship in Software Testing, Katowice, May 2016