code: def test_init_with_invalid_strategy(self):
      # test that passing an invalid strategy raises ValueError
      func = rosen
      bounds = [(-3, 3)]
      assert_raises(
          ValueError,
          differential_evolution,
          func,
          bounds,
          strategy="abc",
      )
  
imports: import multiprocessing
  from scipy.optimize import _differentialevolution
  from scipy.optimize._differentialevolution import DifferentialEvolutionSolver
  from scipy.optimize import differential_evolution
  import numpy
  from scipy.optimize import rosen
  from numpy.testing import assert_equal, assert_allclose, assert_almost_equal, assert_string_equal, assert_
  from pytest import raises, warns
label_desc: Use image node_id 18 for calling the TestDifferentialEvolutionSolver obj's underlying member method code with example usage: obj.test_init_with_invalid_strategy() without return types