code: def test_trust_ncg_hessp(self):
      for x0 in (self.easy_guess, self.hard_guess, self.x_opt):
          r = minimize(
              rosen,
              x0,
              jac=rosen_der,
              hessp=rosen_hess_prod,
              tol=1e-8,
              method="trust-ncg",
          )
          assert_allclose(self.x_opt, r["x"])
  
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 6 for calling the TestTrustRegionSolvers obj's underlying member method code with example usage: obj.test_trust_ncg_hessp() without return types