diff --git a/tricircle/tests/unit/common/test_utils.py b/tricircle/tests/unit/common/test_utils.py
new file mode 100644
index 00000000..15b4d64a
--- /dev/null
+++ b/tricircle/tests/unit/common/test_utils.py
@@ -0,0 +1,36 @@
+
+# Copyright 2010 United States Government as represented by the
+# Administrator of the National Aeronautics and Space Administration.
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import unittest
+
+from tricircle.common import exceptions
+from tricircle.common import utils
+
+
+class TricircleUtilsTestCase(unittest.TestCase):
+    def test_check_string_length(self):
+        self.assertIsNone(utils.check_string_length(
+                          'test', 'name', max_len=255))
+        self.assertRaises(exceptions.InvalidInput,
+                          utils.check_string_length,
+                          11, 'name', max_len=255)
+        self.assertRaises(exceptions.InvalidInput,
+                          utils.check_string_length,
+                          '', 'name', min_len=1)
+        self.assertRaises(exceptions.InvalidInput,
+                          utils.check_string_length,
+                          'a' * 256, 'name', max_len=255)