Unit Tests - rc override

- Unit tests to make sure rc.name:value is working.

src/tests/rc.override.t

@@ -0,0 +1,52 @@
+#! /usr/bin/perl
+################################################################################
+## task - a command line task list manager.
+##
+## Copyright 2006 - 2009, Paul Beckingham.
+## All rights reserved.
+##
+## This program is free software; you can redistribute it and/or modify it under
+## the terms of the GNU General Public License as published by the Free Software
+## Foundation; either version 2 of the License, or (at your option) any later
+## version.
+##
+## This program is distributed in the hope that it will be useful, but WITHOUT
+## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+## FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+## details.
+##
+## You should have received a copy of the GNU General Public License along with
+## this program; if not, write to the
+##
+##     Free Software Foundation, Inc.,
+##     51 Franklin Street, Fifth Floor,
+##     Boston, MA
+##     02110-1301
+##     USA
+##
+################################################################################
+
+use strict;
+use warnings;
+use Test::More tests => 4;
+
+# Create the rc file.
+if (open my $fh, '>', 'rc.rc')
+{
+  print $fh "data.location=.\n",
+            "foo=bar\n";
+  close $fh;
+  ok (-r 'rc.rc', 'Created rc.rc');
+}
+
+my $output = qx{../task rc:rc.rc version};
+like ($output, qr/\sfoo\s+bar/, 'unmodified');
+
+$output = qx{../task rc:rc.rc rc.foo:baz version};
+like ($output, qr/\sfoo\s+baz/, 'overridden');
+
+unlink 'rc.rc';
+ok (!-r 'rc.rc', 'Removed rc.rc');
+
+exit 0;
+