code: def test_all_rejected(self):
      # test that everything works OK if all steps were rejected
      x = 0.0
      for i in range(self.takestep.interval + 1):
          self.takestep(x)
          self.takestep.report(False)
      assert_(self.ts.stepsize < self.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 5 for calling the Test_AdaptiveStepsize obj's underlying member method code with example usage: obj.test_all_rejected() without return types