code: def check_x(self, a_shape, b_shape, xp, dtype):
      a = testing.shaped_random(
          a_shape, xp, dtype=dtype, seed=0, scale=20
      )
      b = testing.shaped_random(b_shape, xp, dtype=dtype, seed=1)
      a = a.copy(order=self.order)
      b = b.copy(order=self.order)
      a_copy = a.copy()
      b_copy = b.copy()
      result = xp.linalg.solve(a, b)
      cupy.testing.assert_array_equal(a_copy, a)
      cupy.testing.assert_array_equal(b_copy, b)
      return result
  
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 3 for calling the TestSolve obj's underlying member method code with example usage: obj.check_x(a_shape, b_shape, xp, dtype) and returns: result