Added a test for when we just want to wrap a command but don't need to get

any arguments from the user.

test/test_commands.py

@@ -47,6 +47,9 @@ class CommandsTestCase(SupyTestCase):
         self.assertEqual(state.args, expected,
                          'Expected %r, got %r' % (expected, state.args))
 
+    def testEmptySpec(self):
+        self.assertState([], [], [])
+
     def testSpecInt(self):
         self.assertState(['int'], ['1'], [1])
         self.assertState(['int', 'int', 'int'], ['1', '2', '3'], [1, 2, 3])