code: def test_categorical_dtype_coerces_boolean(all_parsers, data):
      # see gh-20498
      parser = all_parsers
      dtype = {"b": CategoricalDtype([False, True])}
      expected = DataFrame(
          {"b": Categorical([True, False, None, False])}
      )
  
      result = parser.read_csv(StringIO(data), dtype=dtype)
      tm.assert_frame_equal(result, expected)
  
imports: from io import StringIO
  import os
  import numpy
  import pytest
  from pandas._libs import parsers
  from pandas.core.dtypes.dtypes import CategoricalDtype
  import pandas
  from pandas import Categorical, DataFrame, Timestamp
  import pandas._testing
label_desc: Use image node_id 16 for calling a global function with example usage: test_categorical_dtype_coerces_boolean(all_parsers, data) without return types