A little trick to force you to run your tests before a commit:

in a repositorie, create the following file *.git/hooks/pre-commit* with
this content:

#+BEGIN_SRC sh
    #!/bin/sh
    if [ -d t ]; then
        res=`prove t`
        if [ $? -gt 0 ]; then
        echo "tests fails"
        exit 1
        fi
    fi
    if [ -d xt ]; then
        res=`prove xt`
        if [ $? -gt 0 ]; then
        echo "tests fails"
        exit 1
        fi
    fi
#+END_SRC

and don't forget to chmod with +x.

Now, when you will do your next commit, your test suit will be executed.
If the tests fails, the commit will be rejected.