code: def test_period_ordinal_business_day(day, expected):
      # 5000 is PeriodDtypeCode for BusinessDay
      args = (2013, 10, day, 0, 0, 0, 0, 0, 5000)
      assert period_ordinal(*args) == expected
  
file_path: pandas/pandas/tests/tslibs/test_period.py
imports: import numpy
  import pytest
  from pandas._libs.tslibs import iNaT, to_offset
  from pandas._libs.tslibs.period import extract_ordinals, get_period_field_arr, period_asfreq, period_ordinal
  import pandas._testing
label_desc: Use image node_id 5 for calling a global function with example usage: test_period_ordinal_business_day(day, expected) without return types