code: def test_simple_example(self):
      df = pd.DataFrame(
          {
              "strings": ["aaaa", "bbbb", "cccc"],
              "more_strings": ["aaaa", "dddd", "eeee"],
          }
      )
      encoder = encoders.HashingEncoder(n_components=4, max_process=2)
      encoder.fit(df)
      assert encoder.transform(df).equals(
          pd.DataFrame(
              {
                  "col_0": [0, 1, 1],
                  "col_1": [2, 0, 1],
                  "col_2": [0, 1, 0],
                  "col_3": [0, 0, 0],
              }
          )
      )
  
file_path: category_encoders/tests/test_hashing.py
imports: from unittest import TestCase
  import pandas
  from pandas.testing import assert_frame_equal, assert_index_equal
  import category_encoders
label_desc: Use image node_id 3 for calling the TestHashingEncoder obj's underlying member method code with example usage: obj.test_simple_example() without return types