This is a port of Test::NoTabs in Perl 6. It checks your Perl 6 files that can contain tabs. If it's so, test will be failed.
notabs-ok takes path as a string to the file and check it for tabs absence.
all-perl-files-ok takes path to the directory and checks all files with extensions:
use Test::NoTabs; # Very simple. notabs-ok("test-without-tabs");