# Tests for /dev/urandom
use strict;
use warnings;
use Test::More;
my @WARN;
BEGIN {
# Warning signal handler
$SIG{__WARN__} = sub { push(@WARN, @_); };
}
if (! -e '/dev/urandom') {
plan skip_all => '/dev/urandom not available';
} else {
plan tests => 92;
}
use_ok('Math::Random::MT::Auto', qw(rand irand), '/dev/urandom');
can_ok('main', qw(rand irand));
# Check for warnings
if (! ok(! @WARN, 'Acquired seed data')) {
diag('Seed warnings: ' . join(' | ', @WARN));
}
undef(@WARN);
my ($rn, @rn);
# Test rand()
eval { $rn = rand(); };
ok(! $@, 'rand() died: ' . $@);
ok(defined($rn), 'Got a random number');
ok(Scalar::Util::looks_like_number($rn), 'Is a number: ' . $rn);
ok($rn >= 0.0 && $rn < 1.0, 'In range: ' . $rn);
# Test several values from irand()
for my $ii (0 .. 9) {
eval { $rn[$ii] = irand(); };
ok(! $@, 'irand() died: ' . $@);
ok(defined($rn[$ii]), 'Got a random number');
ok(Scalar::Util::looks_like_number($rn[$ii]), 'Is a number: ' . $rn[$ii]);
ok(int($rn[$ii]) == $rn[$ii], 'Integer: ' . $rn[$ii]);
for my $jj (0 .. $ii-1) {
ok($rn[$jj] != $rn[$ii], 'Randomized');
}
}
exit(0);
# EOF