code: def test_daily_index(self):
      tkrs = ["BHP.AX", "IMP.JO", "BP.L", "PNL.L", "INTC"]
      intervals = ["1d", "1wk", "1mo"]
      for tkr in tkrs:
          dat = yf.Ticker(tkr, session=self.session)
  
          for interval in intervals:
              df = dat.history(period="5y", interval=interval)
  
              f = df.index.time == _dt.time(0)
              self.assertTrue(f.all())
  
imports: from .context import yfinance
  from .context import session_gbl
  import unittest
  import os
  import datetime
  import pytz
  import numpy
  import pandas
label_desc: Use image node_id 3 for calling the TestPriceHistory obj's underlying member method code with example usage: obj.test_daily_index() without return types