'Test the _convert_date_time() method for time seconds.'

def test_convert_date_time_seconds_only_time(self):

    for excel_date in self.excel_seconds:
        date = datetime.datetime.strptime(excel_date[0], '%H:%M:%S.%f')
        time = datetime.time(date.hour, date.minute, date.second, date.microsecond)
        got = self.worksheet._convert_date_time(time)
        exp = excel_date[1]
        self.assertAlmostEqual(got, exp, places=15)
