diff --git a/test.py b/test.py
new file mode 100644
index 0000000..ca6950e
--- /dev/null
+++ b/test.py
@@ -0,0 +1,11 @@
+import unittest
+import testutil
+
+def suite():
+  s = unittest.TestSuite()
+  s.addTest(testutil.suite())
+  return s
+
+if __name__ == '__main__':
+  unittest.TextTestRunner().run(suite())
+
diff --git a/testutil.py b/testutil.py
new file mode 100644
index 0000000..578cc42
--- /dev/null
+++ b/testutil.py
@@ -0,0 +1,23 @@
+import unittest
+from dkim.util import parse_tag_value
+
+class ParseTestCase(unittest.TestCase):
+
+  def testParse(self):
+    hval = '''v=1; a=rsa-sha256; d=facebookmail.com; s=s1024-2011-q2; c=relaxed/simple;
+        q=dns/txt; i=@facebookmail.com; t=1308078492;
+        h=From:Subject:Date:To:MIME-Version:Content-Type;
+        bh=+qPyCOiDQkusTPstCoGjimgDgeZbUaJWIr1mdE6RFxk=;
+        b=EUmDmdnAsNtjSEHGHNTa8PXgGaEUtOVezagmninX5Bs/Q26R9r3AMgawyUSKkbHp
+        /bQZU6QPZfdvmLMPdIWCQPo8SP+gsz4dpox2efO61DlvgYaxBRhwFedAW9LjYhQc
+        3KzW0yB9JHwiDCw1EioVkv+OMHhAYzoIypA0bQyi2bc=;
+'''
+    sig = parse_tag_value(hval)
+    print sig
+
+def suite(): 
+  s = unittest.makeSuite(ParseTestCase,'test')
+  return s
+
+if __name__ == '__main__':
+  unittest.TextTestRunner().run(suite())