code: def test_inverse_correctness(self):
      r = self.rng.standard_normal((4, 4)).astype(config.floatX)
  
      x = matrix()
      xi = self.op(x)
  
      ri = function([x], xi)(r)
      assert ri.shape == r.shape
      assert ri.dtype == r.dtype
  
      rir = np.dot(ri, r)
      rri = np.dot(r, ri)
  
      assert _allclose(np.identity(4), rir), rir
      assert _allclose(np.identity(4), rri), rri
  
imports: import numpy
  import numpy.linalg
  import pytest
  from numpy import inf
  from numpy.testing import assert_array_almost_equal
  import pytensor
  from pytensor import function
  from pytensor.configdefaults import config
  from pytensor.tensor.math import _allclose
  from pytensor.tensor.nlinalg import SVD, Eig, MatrixInverse, TensorInv, det, eig, eigh, lstsq, matrix_dot, matrix_inverse, matrix_power, norm, pinv, qr, slogdet, svd, tensorinv, tensorsolve, trace
  from pytensor.tensor.type import lmatrix, lscalar, matrix, scalar, tensor3, tensor4, vector
  from tests import unittest_tools
label_desc: Use image node_id 2 for calling the TestMatrixInverse obj's underlying member method code with example usage: obj.test_inverse_correctness() without return types