use warnings;
use strict;

use Test::More tests => 54;

use IO::File 1.03;

BEGIN {
	use_ok "Data::Entropy::Source";
	use_ok "Data::Entropy", qw(with_entropy_source);
	use_ok "Data::Entropy::Algorithms", qw(choose choose_r);
}

with_entropy_source +Data::Entropy::Source->new(
		IO::File->new("t/test0.entropy", "r") || die($!), "getc"
), sub {
	my @items = qw(a b c d e f g h i j);
	$_ = <DATA>;
	while(/([a-z]+)/g) {
		is join("", choose(3, @items)), $1;
	}
	$_ = <DATA>;
	while(/([a-z]+)/g) {
		is join("", @{choose_r(3, \@items)}), $1;
	}
	is_deeply [ choose(1, qw(a)) ], [ qw(a) ];
	is_deeply choose_r(1, [qw(a)]), [ qw(a) ];
	is_deeply [ choose(3, qw(a b c)) ], [ qw(a b c) ];
	is_deeply choose_r(3, [qw(a b c)]), [ qw(a b c) ];
	is_deeply [ choose(0, qw(a b c)) ], [];
	is_deeply choose_r(0, [qw(a b c)]), [];
	eval { choose(-1, qw(a b c)); };
	like $@, qr/\Aneed a non-negative number of items to choose/;
	eval { choose_r(-1, [qw(a b c)]); };
	like $@, qr/\Aneed a non-negative number of items to choose/;
	eval { choose(4, qw(a b c)); };
	like $@, qr/\Aneed a sufficiently large array to pick from/;
	eval { choose_r(4, [qw(a b c)]); };
	like $@, qr/\Aneed a sufficiently large array to pick from/;
	eval { choose_r(4, "a"); };
	like $@, qr/\Aneed a sufficiently large array to pick from/;
};

1;

__DATA__
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egj efj abe bcf dgj abd abd acf adi ehj eij bef bei bhi bcf cde bfj ach eij ahi