Devel::Cover (very easy to use and with exceptional output, including colored HTML) will tell you what's being tested and what's not.
It will not tell you (that I know of) that two tests are doing the same thing, but it might prevent you in the future from duplicating (or triplicating, or whatever) tests.
In reply to Re: Test/ Code Ratio
by cog
in thread Test/ Code Ratio
by moot
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