Uhm, I think you are missing a LOT of names on your list there.
What about petdance and the Phalanx project? And chromatic and his test-first evangalism which he spreads through http://www.perl.com (Test Code Kata, and several articles on Test::Builder)? They have done a lot for testing in the perl community as well.
And then there is nothingmuch and the many people over in #perl6 who contributed to make Test::TAP::Model and Test::TAP::HTMLMatrix. Work which is being expanded upon by several others (sorry for not knowing more specific names) to create things like:
I could go on and on, the perl-qa list is quite active with many regularly contributing members. My point really is that Perl's testing culture is so strong, because Perl's testing community is so strong and very active. New tools are constantly being developed, and existing tools are constantly being improved. Keeping the community active keeps it strong, and new shiny toys are a great way of attracting even more talent.
For stvn: sure, there are a lot of people involved with testing now, but I credit Schwern with starting the whole thing. All that stuff you mention came later.Yes, I know it came later, this is my point entirely. Schwern was just another perl hacker in a long line of perl hackers who has furthered the culture of perl testing. This is not meant in any way to discount Schwern's contribution to it all, for it was and is very signifigant in both it's scope and timing. However, he built atop the shoulders of those who came before him, and today many others are building atop his shoulders. I believe the Perl testing culture is so strong, specifically because it is so active. This activity keeps it fresh and therefore keeps people interested, which in turn spurs interest from others, and the cycle continues.
In reply to Re^2: Creating a co-operative framework for testing