First Bash parse_options lib with tests.

t/lib/bash.t

@@ -0,0 +1,23 @@
+#!/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 PerconaTest;
+
+my ($tool) = $PROGRAM_NAME =~ m/([\w-]+)\.t$/;
+push @ARGV, "$trunk/t/lib/bash/*.sh" unless @ARGV;
+
+$ENV{LIB_DIR}   = "$trunk/lib/bash";
+$ENV{T_LIB_DIR} = "$trunk/t/lib";
+
+system("$trunk/util/test-bash-functions $trunk/t/lib/samples/bash/dummy.sh @ARGV");
+
+exit;