docstr: Test with `with_grad=False` (not supported for gen_candidates_torch).
docstr_tok: ["Test","with","`","with_grad=False","`","(","not","supported","for","gen_candidates_torch",")","."]
code: def test_gen_candidates_without_grad(self) -> None:
      """Test with `with_grad=False` (not supported for gen_candidates_torch)."""
  
      self.test_gen_candidates(
          gen_candidates=gen_candidates_scipy,
          options={"disp": False, "with_grad": False},
      )
  
      self.test_gen_candidates_with_fixed_features(
          gen_candidates=gen_candidates_scipy,
          options={"disp": False, "with_grad": False},
      )
  
      self.test_gen_candidates_with_none_fixed_features(
          gen_candidates=gen_candidates_scipy,
          options={"disp": False, "with_grad": False},
      )
  
imports: import math
  import warnings
  from unittest import mock
  import torch
  from botorch.acquisition import qExpectedImprovement, qKnowledgeGradient
  from botorch.exceptions.warnings import OptimizationWarning
  from botorch.fit import fit_gpytorch_mll
  from botorch.generation.gen import gen_candidates_scipy, gen_candidates_torch, get_best_candidates
  from botorch.models import SingleTaskGP
  from botorch.utils.testing import BotorchTestCase, MockAcquisitionFunction
  from gpytorch import settings
  from gpytorch.mlls.exact_marginal_log_likelihood import ExactMarginalLogLikelihood
  from scipy.optimize import OptimizeResult
label_desc: Use image node_id 16 for calling the TestGenCandidates obj's underlying member method code with example usage: obj.test_gen_candidates_without_grad() without return types