[TZubiri]

First paragraph: I want to test my tests.

Second paragraph: I want to test my test-tester.

OP 100% fell down a rabbit-hole.

[latchkey]

Exactly! I was kind of shaking my head over this one...

"they execute extensive scenarios against a live service over HTTP"

Any time I've seen people think they've needed to test live services, over HTTP... it means that there are far deeper issues.