The current test code for complex numbers is just Plain Bad (TM).
Someone else than me :-) should rewrite the test to use more modern testing frameworks. Note: large parts of the current test are "data-driven", I have no experience on how well e.g. Test::More suits that, if it doesn't (I am thinking of useful reporting of failures: where to say that the failure happened if all you've got is a loop reading the __DATA__?) this might open up a place to enhance Test::More, too.
