--- a/tests/unit.py	Tue Mar 27 12:32:15 2012 -0700
+++ b/tests/unit.py	Tue Mar 27 12:50:16 2012 -0700
@@ -73,6 +73,18 @@
         if os.path.exists(filename):
             os.remove(filename)
 
+    def test_missing_values(self):
+        """ensure that Configuration raises a missing value exception"""
+
+        example = ExampleConfiguration()
+
+        exception = None
+        try:
+            example.parse(args=[])
+        except Exception, exception:
+            pass
+        self.assertTrue(isinstance(exception, configuration.TypeCastException))
+
     def test_required(self):
         """ensure you have to have required values"""