Well we're discussing testing only here, so are you sure none explpded on a test a
pad?
It's a weird debarc point to discuss non testing craft vs testing. And "fully assembled", when spacex is flying non-final builds on purpose, using a different test methodology.
> Well we're discussing testing only here, so are you sure none explpded on a test a pad?
Yes! I am sure! That did not happen!
Early development of Saturn V rocket engines involved destructive testing, but a whole rocket would not have been involved at that point.
Here's some later ground testing of final engines: https://www.youtube.com/watch?v=-rP6k18DVdg
You're recalling wrong, or you were reading nonsense. Lots of engines were destroyed in testing (particularly before computer modelling, this was basically how rocket engines were _developed_), but no, no Saturn V ever exploded on the pad. Prior to this incident, the most-impressive on-pad boom was one of the N1s.
No fully assembled Saturn V ever failed, though a few of them had near-misses.