code: def test_pass_takestep(self):
      # test that passing a custom takestep works
      # also test that the stepsize is being adjusted
      takestep = MyTakeStep1()
      initial_step_size = takestep.stepsize
      i = 1
      res = basinhopping(
          func2d,
          self.x0[i],
          minimizer_kwargs=self.kwargs,
          niter=self.niter,
          disp=self.disp,
          take_step=takestep,
      )
      assert_almost_equal(res.x, self.sol[i], self.tol)
      assert_(takestep.been_called)
      # make sure that the build in adaptive step size has been used
      assert_(initial_step_size != takestep.stepsize)
  
imports: import copy
  from numpy.testing import assert_almost_equal, assert_equal, assert_, assert_allclose
  import pytest
  from pytest import raises
  import numpy
  from numpy import cos, sin
  from scipy.optimize import basinhopping, OptimizeResult
  from scipy.optimize._basinhopping import Storage, RandomDisplacement, Metropolis, AdaptiveStepsize
label_desc: Use image node_id 11 for calling the TestBasinHopping obj's underlying member method code with example usage: obj.test_pass_takestep() without return types