'Test the _convert_date_time() method with datetime objects.'

def test_convert_date_time_datetime(self):

    for excel_date in self.excel_dates:
        test_date = datetime.datetime.strptime(excel_date[0], '%Y-%m-%dT')
        got = self.worksheet._convert_date_time(test_date)
        exp = excel_date[1]
        self.assertEqual(got, exp)
