The test modules don't show up in the result list of the initial search but they do show up when you click on the result itself (the Actor, Director, Film, Lazy, and OtherFilm modules are the test modules). I suppose the general consensus must be that's its not important enough to worry about :-)

Update (2012): Sometime after this was posted, the problem seems to have been resolved. I think CPAN no longer lists libraries in the t sub-directory