code: def test_size(self):
      A = sp.csr_matrix(self.A, dtype=self.dtype)
      b = cp.array(numpy.append(self.b, [1]), dtype=self.dtype)
      with pytest.raises(ValueError):
          cupyx.linalg.sparse.lschol(A, b)
  
file_path: cupy/tests/cupyx_tests/linalg_tests/sparse_tests/test_solve.py
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
  from cupy.testing import _condition
  import cupyx
  import cupyx.scipy.sparse
label_desc: Use image node_id 2 for calling the TestLschol obj's underlying member method code with example usage: obj.test_size() without return types