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#!/usr/bin/env perl
use strict;
use warnings;
use Test::More;
use Games::Word qw(shared_letters shared_letters_by_position);
my @tests = (
{a => "abcde", b => "edcba", sl => 5, slbp => 1,
slbp_full => [undef, undef, 'c', undef, undef]},
{a => "", b => "", sl => 0, slbp => 0,
slbp_full => []},
{a => "", b => "abcde", sl => 0, slbp => 0,
slbp_full => [undef, undef, undef, undef, undef]},
{a => "aaa", b => "aa", sl => 2, slbp => 2,
slbp_full => ['a', 'a', undef]},
{a => "abc", b => "abcde", sl => 3, slbp => 3,
slbp_full => ['a', 'b', 'c', undef, undef]},
{a => "cde", b => "abcde", sl => 3, slbp => 0,
slbp_full => [undef, undef, undef, undef, undef]},
{a => "abcba", b => "aabbc", sl => 5, slbp => 2,
slbp_full => ['a', undef, undef, 'b', undef]},
{a => "abcde", b => "cdefg", sl => 3, slbp => 0,
slbp_full => [undef, undef, undef, undef, undef]},
{a => "bacaa", b => "gabca", sl => 4, slbp => 2,
slbp_full => [undef, 'a', undef, undef, 'a']},
);
for (@tests) {
my %test = %$_;
my ($a, $b) = ($test{a}, $test{b});
is(shared_letters($a, $b), $test{sl},
"testing shared_letters: '$a' vs '$b'");
is(shared_letters_by_position($a, $b), $test{slbp},
"testing shared_letters_by_position: '$a' vs '$b'");
is_deeply([shared_letters_by_position($a, $b)], $test{slbp_full},
"testing shared_letters_by_position (list): '$a' vs '$b'");
}
done_testing;
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