Added tests for the Regexp plugin.

lib/DDG/Goodie/Regexp.pm

@@ -16,7 +16,7 @@ attribution web => [ 'https://www.duckduckgo.com', 'DuckDuckGo' ],
             github => [ 'https://github.com/duckduckgo', 'duckduckgo'],
             twitter => ['http://twitter.com/duckduckgo', 'duckduckgo'];
 
-triggers query_lc => qr/^regexp [\/\\](.*?)[\/\\] (.*)$/i;
+triggers query_lc => qr/^regexp [\/\\](.+?)[\/\\] (.+)$/i;
 
 handle query => sub {
     my $regexp = $1;

t/Regexp.t

@@ -0,0 +1,21 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use Test::More;
+use DDG::Test::Goodie;
+
+zci answer_type => 'regexp';
+zci is_cached => 1;
+
+ddg_goodie_test(
+        [qw( DDG::Goodie::Regexp )],
+        'regexp /(hello)/ hello probably' => test_zci(
+            "hello",
+        ),
+        'regexp /(dd)/ ddg' => test_zci(
+            "dd",
+        ),
+);
+
+done_testing;