code: def test_write_day_and_id(self):
      result = self.bcolz_daily_bar_ctable
      idx = 0
      ids = result["id"]
      days = result["day"]
      for asset_id in self.assets:
          for date in self.dates_for_asset(asset_id):
              self.assertEqual(ids[idx], asset_id)
              self.assertEqual(date, seconds_to_timestamp(days[idx]))
              idx += 1
  
imports: from sys import maxsize
  import re
  from nose_parameterized import parameterized
  from numpy import arange, datetime64, nan
  from numpy.testing import assert_array_equal
  from pandas import DataFrame, Timestamp
  from pandas.util.testing import assert_index_equal
  from catalyst.data.us_equity_pricing import BcolzDailyBarReader, BcolzDailyBarWriter, NoDataBeforeDate, NoDataAfterDate
  from catalyst.pipeline.loaders.synthetic import OHLCV, asset_start, asset_end, expected_bar_value, expected_bar_values_2d, make_bar_data
  from catalyst.testing import seconds_to_timestamp
  from catalyst.testing.fixtures import WithAssetFinder, WithBcolzEquityDailyBarReader, WithTmpDir, WithTradingCalendars, CatalystTestCase
  from catalyst.utils.calendars import get_calendar
label_desc: Use image node_id 10 for calling the BcolzDailyBarTestCase obj's underlying member method code with example usage: obj.test_write_day_and_id() without return types