# OK
# (No message for next test)
ok 1
ok 2 - 1 is ok
ok 3 - TRUE is ok
ok 4 - 'string' is ok
# Not OK
# (No message for next test)
not ok 5
not ok 6 - 0 is not ok
not ok 7 - FALSE is not ok
not ok 8 - '' is not ok
not ok 9 - NULL is not ok
1..9

# Looks like you failed 5 tests of 9.