or download this
i@raspberrypi:~/repos/rpi-wiringpi $ make test
PERL_DL_NONLAZY=1 "/home/pi/perl5/perlbrew/perls/perl-5.24.1/bin/perl"
+ "-MExtUtils::Command::MM" "-MTest::Harness" "-e" "undef *Test::Harne
+ss::Switches; test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
...
All tests successful.
Files=21, Tests=2407, 36 wallclock secs ( 1.93 usr 0.12 sys + 14.00 c
+usr 1.22 csys = 17.27 CPU)
Result: PASS