Add forked Maatkit tools in bin/ and their tests in t/.

t/pt-duplicate-key-checker/issue_298.t

@@ -0,0 +1,45 @@
+#!/usr/bin/env perl
+
+BEGIN {
+   die "The PERCONA_TOOLKIT_BRANCH environment variable is not set.\n"
+      unless $ENV{PERCONA_TOOLKIT_BRANCH} && -d $ENV{PERCONA_TOOLKIT_BRANCH};
+   unshift @INC, "$ENV{PERCONA_TOOLKIT_BRANCH}/lib";
+};
+
+use strict;
+use warnings FATAL => 'all';
+use English qw(-no_match_vars);
+use Test::More;
+
+use MaatkitTest;
+use Sandbox;
+require "$trunk/bin/pt-duplicate-key-checker";
+
+my $dp  = new DSNParser(opts=>$dsn_opts);
+my $sb  = new Sandbox(basedir => '/tmp', DSNParser => $dp);
+my $dbh = $sb->get_dbh_for('master');
+
+if ( !$dbh ) {
+   plan skip_all => 'Cannot connect to sandbox master';
+}
+else {
+   plan tests => 1;
+}
+
+my $output;
+my $cnf = "/tmp/12345/my.sandbox.cnf";
+my $cmd = "$trunk/bin/pt-duplicate-key-checker -F $cnf -h 127.1";
+
+$sb->wipe_clean($dbh);
+
+# #############################################################################
+# Issue 298: mk-duplicate-key-checker crashes
+# #############################################################################
+$output = `$cmd -d mysql -t columns_priv 2>&1`;
+unlike($output, qr/Use of uninitialized var/, 'Does not crash on undef var');
+
+# #############################################################################
+# Done.
+# #############################################################################
+$sb->wipe_clean($dbh);
+exit;