code: def test_option_lsmr_tol(self):
      # Should work with a positive float, string equal to 'auto', or None
      _ = lsq_linear(A, b, lsq_solver="lsmr", lsmr_tol=1e-2)
      _ = lsq_linear(A, b, lsq_solver="lsmr", lsmr_tol="auto")
      _ = lsq_linear(A, b, lsq_solver="lsmr", lsmr_tol=None)
  
      # Should raise error with negative float, strings
      # other than 'auto', and integers
      err_message = (
          "`lsmr_tol` must be None, 'auto', or positive float."
      )
      with pytest.raises(ValueError, match=err_message):
          _ = lsq_linear(A, b, lsq_solver="lsmr", lsmr_tol=-0.1)
      with pytest.raises(ValueError, match=err_message):
          _ = lsq_linear(A, b, lsq_solver="lsmr", lsmr_tol="foo")
      with pytest.raises(ValueError, match=err_message):
          _ = lsq_linear(A, b, lsq_solver="lsmr", lsmr_tol=1)
  
imports: import pytest
  import numpy
  from numpy.linalg import lstsq
  from numpy.testing import assert_allclose, assert_equal, assert_
  from scipy.sparse import rand, coo_matrix
  from scipy.sparse.linalg import aslinearoperator
  from scipy.optimize import lsq_linear
  from scipy.optimize._minimize import Bounds
label_desc: Use image node_id 1 for calling the TestErrorChecking obj's underlying member method code with example usage: obj.test_option_lsmr_tol() without return types