code: def test_chisquare(self):
      df = self.df
      if not isinstance(self.df, float):
          df = cupy.array(self.df)
      self.generate(df=df)
  
imports: import functools
  import unittest
  import numpy
  import cupy
  from cupy import testing
  from cupy.testing import _condition
label_desc: Use image node_id 1 for calling the Chisquare obj's underlying member method code with example usage: obj.test_chisquare() without return types