Aye, I was running late for work and indulging myself with a little time on perlmonks.

Your approach to testing for digit usage seems ok to me, as the more condensed ways of doing it might be harder for a maintainer to follow. I would probably do this: 

my %unused = map {$_=>1} (0..9);
for my $item (@items) {
    last unless %unused;
    delete $unused{$_} for split '', $item;
}

if (%unused) {
    fail(sprintf "Unused digits: %s", join(',',keys %unused));
}
else {
    ok(1,"All digits used");
}

[download]
My only issue with the original test was that with more tests being added you need to accumulate more stats as you go, which adds complexity to the test script. I prefer to keep tests in neat little compartments when possible.

In reply to Re^3: Testing Random Code by imp
in thread Testing Random Code by Ovid

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