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#!./perl
use strict;
use warnings;
use Test::More tests => 7;
use List::Util qw(shuffle);
my @r;
@r = shuffle();
ok( !@r, 'no args');
@r = shuffle(9);
is( 0+@r, 1, '1 in 1 out');
is( $r[0], 9, 'one arg');
my @in = 1..100;
@r = shuffle(@in);
is( 0+@r, 0+@in, 'arg count');
isnt( "@r", "@in", 'result different to args');
my @s = sort { $a <=> $b } @r;
is( "@in", "@s", 'values');
{
local $List::Util::RAND = sub { 4/10 }; # chosen by a fair die
@r = shuffle(1..10);
is_deeply(
[ shuffle(1..10) ],
[ shuffle(1..10) ],
'rigged rand() yields predictable output'
);
}
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