debug broken test

Author: jbrockmendel

pandas/tests/series/test_arithmetic.py

@@ -125,6 +125,10 @@ def test_timestamp_equality(self):
         # GH#11034
         ser = pd.Series([pd.Timestamp('2000-01-29 01:59:00'), 'NaT'])
         result = ser != ser
+        assert result[0] == (ser[0] != ser[0])
+        assert result[1] == (ser[1] != ser[0])
+        diff = ser - ser[0]
+        assert diff[0] == pd.Timedelta(0)
         tm.assert_series_equal(result, pd.Series([False, True]))
         result = ser != ser[0]
         tm.assert_series_equal(result, pd.Series([False, True]))