Test python version of Interval too

tests/test_interval.py

@@ -11,6 +11,9 @@ import itertools
 from nilmdb.utils.interval import IntervalError
 from nilmdb.server.interval import Interval, DBInterval, IntervalSet
 
+# so we can test them separately
+from nilmdb.utils.interval import Interval as UtilsInterval
+
 from testutil.helpers import *
 import unittest
 
@@ -47,6 +50,15 @@ def makeset(string):
     return iset
 
 class TestInterval:
+    def test_client_interval(self):
+        # Run interval tests against the Python version of Interval.
+        global Interval
+        NilmdbInterval = Interval
+        Interval = UtilsInterval
+        self.test_interval()
+        self.test_interval_intersect()
+        Interval = NilmdbInterval
+
     def test_interval(self):
         # Test Interval class
         os.environ['TZ'] = "America/New_York"