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04_variations_with_repetition.t
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04_variations_with_repetition.t
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use strict;
use warnings;
use FindBin qw($Bin);
use lib $Bin;
use Test::More qw(no_plan);
use Algorithm::Combinatorics qw(variations_with_repetition);
use Tester;
my $tester = Tester->__new(\&variations_with_repetition);
my (@result, @expected);
# ---------------------------------------------------------------------
eval { variations_with_repetition() };
ok($@, '');
eval { variations_with_repetition([1]) };
ok($@, '');
eval { variations_with_repetition(0, 0) };
ok($@, '');
# ---------------------------------------------------------------------
@expected = ([]);
$tester->__test(\@expected, [], 0);
@expected = ([]);
$tester->__test(\@expected, [1, 2], 0);
# ---------------------------------------------------------------------
@expected = (["foo"]);
$tester->__test(\@expected, ["foo"], 1);
# ---------------------------------------------------------------------
@expected = (["foo"], ["bar"]);
$tester->__test(\@expected, ["foo", "bar"], 1);
# ---------------------------------------------------------------------
@expected = (
["foo", "foo"],
["foo", "bar"],
["bar", "foo"],
["bar", "bar"],
);
$tester->__test(\@expected, ["foo", "bar"], 2);
# ---------------------------------------------------------------------
@expected = (
["foo", "foo", "foo"],
["foo", "foo", "bar"],
["foo", "bar", "foo"],
["foo", "bar", "bar"],
["bar", "foo", "foo"],
["bar", "foo", "bar"],
["bar", "bar", "foo"],
["bar", "bar", "bar"],
);
$tester->__test(\@expected, ["foo", "bar"], 3);
# ---------------------------------------------------------------------
@expected = (
["foo", "foo"],
["foo", "bar"],
["foo", "baz"],
["bar", "foo"],
["bar", "bar"],
["bar", "baz"],
["baz", "foo"],
["baz", "bar"],
["baz", "baz"],
);
$tester->__test(\@expected, ["foo", "bar", "baz"], 2);
# ---------------------------------------------------------------------
@expected = (
[0, 0, 0],
[0, 0, 1],
[0, 0, 2],
[0, 0, 3],
[0, 1, 0],
[0, 1, 1],
[0, 1, 2],
[0, 1, 3],
[0, 2, 0],
[0, 2, 1],
[0, 2, 2],
[0, 2, 3],
[0, 3, 0],
[0, 3, 1],
[0, 3, 2],
[0, 3, 3],
[1, 0, 0],
[1, 0, 1],
[1, 0, 2],
[1, 0, 3],
[1, 1, 0],
[1, 1, 1],
[1, 1, 2],
[1, 1, 3],
[1, 2, 0],
[1, 2, 1],
[1, 2, 2],
[1, 2, 3],
[1, 3, 0],
[1, 3, 1],
[1, 3, 2],
[1, 3, 3],
[2, 0, 0],
[2, 0, 1],
[2, 0, 2],
[2, 0, 3],
[2, 1, 0],
[2, 1, 1],
[2, 1, 2],
[2, 1, 3],
[2, 2, 0],
[2, 2, 1],
[2, 2, 2],
[2, 2, 3],
[2, 3, 0],
[2, 3, 1],
[2, 3, 2],
[2, 3, 3],
[3, 0, 0],
[3, 0, 1],
[3, 0, 2],
[3, 0, 3],
[3, 1, 0],
[3, 1, 1],
[3, 1, 2],
[3, 1, 3],
[3, 2, 0],
[3, 2, 1],
[3, 2, 2],
[3, 2, 3],
[3, 3, 0],
[3, 3, 1],
[3, 3, 2],
[3, 3, 3],
);
$tester->__test(\@expected, [0..3], 3);
# ----------------------------------------------------------------------
# n^k
my $ncomb = 0;
my $iter = variations_with_repetition([1..7], 5);
while (my $c = $iter->next) {
++$ncomb;
}
is($ncomb, 16807, "");
$ncomb = 0;
$iter = variations_with_repetition([1..4], 7);
while (my $c = $iter->next) {
++$ncomb;
}
is($ncomb, 16384, "");