The way it's been explained to me is that because one assert failing blocks the other assertions from running you don't get a "full" picture of what went wrong.

The way it's been explained to me is that because one assert failing blocks the other assertions from running you don't get a "full" picture of what went wrong. So instead of: - error W doesn't equal 20 Fix that Run test again - error H doesn't equal 10 Fix that Run test again It's - Error Width doesn't equal 20 - Error Height doesn't equal 10 Fix both Run test I think the time savings are negligible though. And it makes testing even more tedious, as if people needed any additional reasons to avoid writing tests.