code: def test_dogleg_accuracy(self):
      # test the accuracy and the return_all option
      x0 = self.hard_guess
      r = minimize(
          rosen,
          x0,
          jac=rosen_der,
          hess=rosen_hess,
          tol=1e-8,
          method="dogleg",
          options={"return_all": True},
      )
      assert_allclose(x0, r["allvecs"][0])
      assert_allclose(r["x"], r["allvecs"][-1])
      assert_allclose(r["x"], self.x_opt)
  
file_path: scipy/scipy/optimize/tests/test_trustregion.py
imports: import pytest
  import numpy
  from numpy.testing import assert_, assert_equal, assert_allclose
  from scipy.optimize import minimize, rosen, rosen_der, rosen_hess, rosen_hess_prod
label_desc: Use image node_id 2 for calling the TestTrustRegionSolvers obj's underlying member method code with example usage: obj.test_dogleg_accuracy() without return types