code: def setUp(self):
      if not cusolver.check_availability("potrsBatched"):
          pytest.skip("potrsBatched is not available")
  
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
  import cupyx
  from cupyx import cusolver, lapack
label_desc: Use image node_id 1 for calling the TestPosv obj's underlying member method code with example usage: obj.setUp() without return types