or download this
pts/6 ryan@pi:~/src/Text-Trim $> cover -test
Deleting database /home/ryan/src/Text-Trim/cover_db
cover: running make test "OPTIMIZE=-O0 -fprofile-arcs -ftest-coverage"
+ "OTHERLDFLAGS=-fprofile-arcs -ftest-coverage"
...
HTML output written to /home/ryan/src/Text-Trim/cover_db/coverage.html
done.