code: def check_shape(self, a_shape):
      a = cupy.random.rand(*a_shape)
      with self.assertRaises(numpy.linalg.LinAlgError):
          cupy.linalg.inv(a)
  
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
  from cupy.testing import _condition
  import cupyx
  from cupy.cublas import get_batched_gesv_limit, set_batched_gesv_limit
label_desc: Use image node_id 2 for calling the TestInv obj's underlying member method code with example usage: obj.check_shape(a_shape) without return types