New test script.

+# This file is part of Mailutils testsuite.
+# Copyright (C) 2005, Free Software Foundation
+#  
+# 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.
+
+echo "Begin test"
+
+if s
+ echo "Send mode"
+else
+ echo "Not a send mode"
+endif
+
+if r
+ echo "Read mode"
+ if t
+   echo "On TTY"
+ else
+   echo "Not on TTY"
+ endif
+endif
+
+echo "End test"