code: def test_get_to_timestamp_base(freqstr, exp_freqstr):
      off = to_offset(freqstr)
      per = Period._from_ordinal(1, off)
      exp_code = to_offset(exp_freqstr)._period_dtype_code
  
      result_code = per._dtype._get_to_timestamp_base()
      assert result_code == exp_code
  
imports: import numpy
  import pytest
  from pandas._libs.tslibs import Period, to_offset
label_desc: Use image node_id 1 for calling a global function with example usage: test_get_to_timestamp_base(freqstr, exp_freqstr) without return types