Added datetime functions

tests/datetimetest.py

@@ -0,0 +1,16 @@
+from settings import config
+from paramecio.citoplasma import datetime
+import unittest
+
+class TestFieldMethods(unittest.TestCase):
+    
+    def test_timenow(self):
+        
+        time=datetime.normalize_time(2012, 12, 21, 00, 24, 21)
+        
+        self.assertEqual(time, '20121221002421')
+        
+        value=datetime.format_tztime(time)
+        
+        self.assertEqual(value, '21/12/2012 00:24:21')
+