in reply to Test/ Code Ratio
The other thing to consider is if your tests have a lot of repetitive code. You might look at Test::Class as a way of refactoring, particularly if your code has a lot of classes/subclasses and your tests are checking them for similar behaviors.
On the other hand, it wouldn't surprise me a priori if you have that kind of ratio. Perl is a very concise language and you can do a lot in only a few lines of code, but testing all the ways that code could be used could be quite lengthy. You've got to consider the branch and condition density of your code -- if that's high, then you'll need a lot of tests to verify behavior in all circumstances.
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