code: def test_greedy(self):
      ds = self.d.predict(
          dataset,
          rec_size=6,
          target_prop=[0.5, 0.5],
          rerank_type="Greedy",
      ).convert_to_dataframe()[0]
      actual = len(ds[ds["s"] == 1]) / len(ds)
      expected = 0.5
      assert actual == expected
  
file_path: AIF360/tests/test_deterministic_reranking.py
imports: import unittest
  import pandas
  from aif360.datasets import RegressionDataset
  from aif360.algorithms.postprocessing.deterministic_reranking import DeterministicReranking
label_desc: Use image node_id 3 for calling the TestValues obj's underlying member method code with example usage: obj.test_greedy() without return types