code: def test_output(self):
      res_df = self.fpalgo(
          self.df, min_support=0.001, use_colnames=True
      )
      expect = pd.DataFrame(
          [
              [0.25, frozenset(["a"])],
              [0.25, frozenset(["b"])],
              [0.25, frozenset(["c"])],
              [0.25, frozenset(["d"])],
              [0.25, frozenset(["e"])],
              [0.25, frozenset(["c", "d"])],
          ],
          columns=["support", "itemsets"],
      )
  
      compare_dataframes(res_df, expect)
  
imports: import sys
  from contextlib import contextmanager
  from io import StringIO
  import numpy
  import pandas
  from numpy.testing import assert_array_equal
  from packaging.version import Version
  from pandas import __version__
  from scipy.sparse import csr_matrix
  from mlxtend.preprocessing import TransactionEncoder
  from mlxtend.utils import assert_raises
label_desc: Use image node_id 2 for calling the FPTestEx2All obj's underlying member method code with example usage: obj.test_output() without return types