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NAME Devel::Cover - Code coverage metrics for PerlDESCRIPTION This module provides code coverage metrics for Perl. If you can't guess by the version number this is an alpha release. Code coverage data are collected using a pluggable runops function which counts how many times each op is executed. These data are then mapped back to reality using the B compiler modules. There is also a statement profiling facility which needs a better backend to be really useful. The cover program can be used to generate coverage reports. Statement, branch, condition, subroutine, pod and time coverage information is reported. Statement coverage data should be reasonable, although there may be some statements which are not reported. Branch and condition coverage data should be mostly accurate too, although not always what one might initially expect. Subroutine coverage should be as accurate as statement coverage. Pod coverage comes from Pod::Coverage. Coverage data for path coverage are not yet collected. The gcov2perl program can be used to convert gcov files to "Devel::Cover" databases. You may find that the results don't match your expectations. I would imagine that at least one of them is wrong. The most appropriate mailing list on which to discuss this module would be perl-qa. Discussion has migrated there from perl-qa-metrics which is now defunct. See <http://lists.perl.org/showlist.cgi?name=perl-qa>.REQUIREMENTS * Perl 5.6.1 or greater Perl 5.7.0 is unsupported. Perl 5.8.1 or greater is recommended. Whilst Perl 5.6 should work you will probably miss out on coverage information which would be available using a more modern version. * The ability to compile XS extensions. This means a working compiler and make program at least. * Storable and Digest::MD5 Both are in the core in Perl 5.8.0 and above. * Pod::Coverage if you want Pod coverage. * Test::Differences if the tests fail and you would like nice output telling you why.