code: def test_basic_switch(self) -> None:
      orig_gen = torch.Generator()
      orig_gen.manual_seed(1337)
      data1 = self._read_all_simple(orig_generator=orig_gen)
  
      other_gen = torch.Generator()
      other_gen.manual_seed(7331)
      orig_gen.manual_seed(1337)
      data2 = self._read_all_switch(
          new_generator=other_gen, orig_generator=orig_gen
      )
      self.assertNotEqualTensors(data1, data2)
  
imports: import unittest
  from typing import Optional
  import torch
  import torch.nn
  from opacus import PrivacyEngine
  from opacus.data_loader import DPDataLoader, switch_generator
  from opacus.grad_sample import GradSampleModule
  from opacus.optimizers import DPOptimizer
  from torch.utils.data import DataLoader, TensorDataset
label_desc: Use image node_id 5 for calling the DataLoaderSwitchRandomnessTest obj's underlying member method code with example usage: obj.test_basic_switch() without return types