#!/usr/bin/perl

use strict;
use warnings;

my @tests;
for (glob "test*[0-9].exe") {
    push @tests, "$_" if -e substr($_, 0, - 4).".ans";
}

my $num_failed=0;

for my $test (@tests) {
    `./$test > $test.out`;
    my $ansfile = substr($test, 0, - 4).".ans";
    `diff $test.out $ansfile`;
    print "$test failed\n" if $?;
    $num_failed++ if $?;
}

print scalar @tests . " tests conducted, $num_failed failed.\n";
exit $num_failed;