code: def test_modf(self, fill_value):
      # https://github.com/pandas-dev/pandas/issues/26946
      sparse = SparseArray(
          [fill_value] * 10 + [1.1, 2.2], fill_value=fill_value
      )
      r1, r2 = np.modf(sparse)
      e1, e2 = np.modf(np.asarray(sparse))
      tm.assert_sp_array_equal(
          r1, SparseArray(e1, fill_value=fill_value)
      )
      tm.assert_sp_array_equal(
          r2, SparseArray(e2, fill_value=fill_value)
      )
  
imports: import re
  import numpy
  import pytest
  from pandas._libs.sparse import IntIndex
  import pandas
  from pandas import SparseDtype, isna
  import pandas._testing
  from pandas.core.arrays.sparse import SparseArray
label_desc: Use image node_id 4 for calling the TestSparseArrayAnalytics obj's underlying member method code with example usage: obj.test_modf(fill_value) without return types