code: def test_rename_categories_dict(self):
      # GH 17336
      cat = Categorical(["a", "b", "c", "d"])
      res = cat.rename_categories({"a": 4, "b": 3, "c": 2, "d": 1})
      expected = Index([4, 3, 2, 1])
      tm.assert_index_equal(res.categories, expected)
  
      # Test for dicts of smaller length
      cat = Categorical(["a", "b", "c", "d"])
      res = cat.rename_categories({"a": 1, "c": 3})
  
      expected = Index([1, "b", 3, "d"])
      tm.assert_index_equal(res.categories, expected)
  
      # Test for dicts with bigger length
      cat = Categorical(["a", "b", "c", "d"])
      res = cat.rename_categories(
          {"a": 1, "b": 2, "c": 3, "d": 4, "e": 5, "f": 6}
      )
      expected = Index([1, 2, 3, 4])
      tm.assert_index_equal(res.categories, expected)
  
      # Test for dicts with no items from old categories
      cat = Categorical(["a", "b", "c", "d"])
      res = cat.rename_categories({"f": 1, "g": 3})
  
      expected = Index(["a", "b", "c", "d"])
      tm.assert_index_equal(res.categories, expected)
  
imports: import re
  import numpy
  import pytest
  from pandas.compat import PY311
  from pandas import Categorical, CategoricalIndex, DataFrame, Index, Series, StringDtype
  import pandas._testing
  from pandas.core.arrays.categorical import recode_for_categories
label_desc: Use image node_id 7 for calling the TestCategoricalAPI obj's underlying member method code with example usage: obj.test_rename_categories_dict() without return types