Unit Tests - wait

- Added unit tests to prove that the wait: attribute is working,
  which it is not.

src/tests/wait.t

@@ -0,0 +1,71 @@
+#! /usr/bin/perl
+################################################################################
+## task - a command line task list manager.
+##
+## Copyright 2006 - 2010, 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 => 9;
+
+# Create the rc file.
+if (open my $fh, '>', 'wait.rc')
+{
+  print $fh "data.location=.\n",
+            "confirmation=off\n";
+
+  close $fh;
+  ok (-r 'wait.rc', 'Created wait.rc');
+}
+
+# Add a waiting task, check it is not there, wait, then check it is.
+qx{../task rc:wait.rc add -- yeswait};
+qx{../task rc:wait.rc add -- nowait};
+qx{../task rc:wait.rc 1 wait:1s};
+
+my $output = qx{../task rc:wait.rc ls};
+like ($output, qr/nowait/ms, 'non-waiting task visible');
+unlike ($output, qr/yeswait/ms, 'waiting task invisible');
+
+sleep 2;
+
+$output = qx{../task rc:wait.rc ls};
+like ($output, qr/nowait/ms, 'non-waiting task still visible');
+like ($output, qr/yeswait/ms, 'waiting task now visible');
+
+# Cleanup.
+unlink 'pending.data';
+ok (!-r 'pending.data', 'Removed pending.data');
+
+unlink 'completed.data';
+ok (!-r 'completed.data', 'Removed completed.data');
+
+unlink 'undo.data';
+ok (!-r 'undo.data', 'Removed undo.data');
+
+unlink 'wait.rc';
+ok (!-r 'wait.rc', 'Removed wait.rc');
+
+exit 0;