Employers looking for candidates beyond the entry level tend to be interested in a candidate's experience and work history far more than in any result of a test. Actuaries may be one exception. Off the top of my head it is the only profession I can think of where promotion within the field is gated by tests, and not just admission to the field. However I am not an actuary, so I may not fully understand how this works.

FYI: I regularly recruit, interview, and hire candidates within my field. I would love to have a test I could give to candidates to tell me who to hire, but I know of no such test. At best the written and computer administered tests that exist serve as a bozo filter to eliminate the worst candidates. They do not eliminate all bozos, and do not distinguish the mildly competent from the ridiculously effective, not even at the entry level.