1 files changed, 42 insertions, 0 deletions

diff --git a/src/mailman/bin/tests/test_mailman.py b/src/mailman/bin/tests/test_mailman.py
new file mode 100644
index 000000000..0c9062787
--- /dev/null
+++ b/src/mailman/bin/tests/test_mailman.py
@@ -0,0 +1,42 @@
+# Copyright (C) 2015 by the Free Software Foundation, Inc.
+#
+# This file is part of GNU Mailman.
+#
+# GNU Mailman 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 3 of the License, or (at your option)
+# any later version.
+#
+# GNU Mailman 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
+# GNU Mailman.  If not, see <http://www.gnu.org/licenses/>.
+
+"""Test mailman command utilities."""
+
+__all__ = [
+    'TestMailmanCommand',
+]
+
+import sys
+import unittest
+
+from io import StringIO
+from mock import patch, MagicMock
+
+from mailman.bin.mailman import main
+
+
+
+class TestMailmanCommand(unittest.TestCase):
+
+    def test_mailman_command__without_subscommnad_prints_help(self):
+        testargs = ['mailman']
+        output = StringIO()
+        with patch('sys.argv', testargs), patch('sys.stdout', output):
+            with self.assertRaises(SystemExit) as cm:
+                main()
+        self.assertIn('usage', output.getvalue())