Add tests for more units

Author: cpcloud

pandas/tseries/tests/test_period.py

@@ -238,10 +238,17 @@ def test_period_constructor(self):
         expected = Period(datetime(2007, 1, 1, 9, 0, 0, 1000), freq='L')
         self.assertEqual(i1, expected)
 
+        expected = Period(np.datetime64('2007-01-01 09:00:00.001Z'), freq='L')
+        self.assertEqual(i1, expected)
+
         i1 = Period('2007-01-01 09:00:00.00101')
         expected = Period(datetime(2007, 1, 1, 9, 0, 0, 1010), freq='U')
         self.assertEqual(i1, expected)
 
+        expected = Period(np.datetime64('2007-01-01 09:00:00.00101Z'),
+                          freq='U')
+        self.assertEqual(i1, expected)
+
         self.assertRaises(ValueError, Period, ordinal=200701)
 
         self.assertRaises(ValueError, Period, '2007-1-1', freq='X')
@@ -440,7 +447,7 @@ def test_properties_weekly(self):
         assert_equal((w_date - 1).week, 52)
         assert_equal(w_date.days_in_month, 31)
         assert_equal(Period(freq='WK', year=2012, month=2, day=1).days_in_month, 29)
-        
+
     def test_properties_daily(self):
         # Test properties on Periods with daily frequency.
         b_date = Period(freq='B', year=2007, month=1, day=1)