code: def test2(self):
      a = dmatrix()
      axis = scalar()
      w = sort(a, axis)
      f = pytensor.function([a, axis], w)
      for axis_val in 0, 1:
          gv = f(self.m_val, axis_val)
          gt = np.sort(self.m_val, axis_val)
          utt.assert_allclose(gv, gt)
  
imports: from functools import reduce
  from itertools import chain, product
  import numpy
  import pytest
  import pytensor
  from pytensor.compile.mode import Mode
  from pytensor.tensor.sort import ArgSortOp, SortOp, TopKOp, argsort, argtopk, sort, topk, topk_and_argtopk
  from pytensor.tensor.type import dmatrix, dvector, float_dtypes, integer_dtypes, lscalar, matrix, scalar, tensor, vector
  from tests import unittest_tools
label_desc: Use image node_id 3 for calling the TestSort obj's underlying member method code with example usage: obj.test2() without return types