add test for shared_letters

1 files changed, 26 insertions, 0 deletions

diff --git a/t/012-shared-letters.t b/t/012-shared-letters.t
new file mode 100644
index 0000000..773f0b5
--- /dev/null
+++ b/t/012-shared-letters.t
@@ -0,0 +1,26 @@
+#!perl -T
+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},
+    {a => "",      b => "",      sl => 0, slbp => 0},
+    {a => "",      b => "abcde", sl => 0, slbp => 0},
+    {a => "aaa",   b => "aa",    sl => 2, slbp => 2},
+    {a => "abc",   b => "abcde", sl => 3, slbp => 3},
+    {a => "cde",   b => "abcde", sl => 3, slbp => 0},
+    {a => "abcba", b => "aabbc", sl => 5, slbp => 2},
+    {a => "abcde", b => "cdefg", sl => 3, slbp => 0},
+    {a => "bacaa", b => "gabca", sl => 4, slbp => 2},
+);
+plan tests => 2 * @tests;
+
+for (@tests) {
+    my %test = %$_;
+    is(shared_letters($test{a}, $test{b}), $test{sl},
+       "testing shared_letters");
+    is(shared_letters_by_position($test{a}, $test{b}), $test{slbp},
+       "testing shared_letters_by_position");
+}