code: def test_bicgstab_against_scipy(self, shape, dtype, preconditioner):
      if not config.enable_x64.value:
          raise unittest.SkipTest("requires x64 mode")
  
      rng = jtu.rand_default(self.rng())
      A = rng(shape, dtype)
      b = rng(shape[:1], dtype)
      M = self._fetch_preconditioner(preconditioner, A, rng=rng)
  
      def args_maker():
          return A, b
  
      self._CheckAgainstNumpy(
          partial(scipy_bicgstab, M=M, maxiter=1),
          partial(lax_bicgstab, M=M, maxiter=1),
          args_maker,
          tol=1e-5,
      )
  
      self._CheckAgainstNumpy(
          partial(scipy_bicgstab, M=M, maxiter=2),
          partial(lax_bicgstab, M=M, maxiter=2),
          args_maker,
          tol=1e-4,
      )
  
      self._CheckAgainstNumpy(
          partial(scipy_bicgstab, M=M, maxiter=1),
          partial(lax_bicgstab, M=M, maxiter=1),
          args_maker,
          tol=1e-4,
      )
  
      self._CheckAgainstNumpy(
          np.linalg.solve,
          partial(lax_bicgstab, M=M, atol=1e-6),
          args_maker,
          tol=1e-4,
      )
  
imports: from functools import partial
  import unittest
  from absl.testing import absltest
  import numpy
  import scipy.sparse.linalg
  import jax
  import jax.numpy
  import jax.scipy.sparse.linalg
  from jax import jit
  from jax import lax
  from jax.tree_util import register_pytree_node_class
  import jax._src.scipy.sparse.linalg
  from jax._src import config
  from jax._src import dtypes
  from jax._src import test_util
label_desc: Use image node_id 10 for calling the LaxBackedScipyTests obj's underlying member method code with example usage: obj.test_bicgstab_against_scipy(shape, dtype, preconditioner) and returns: A,  b