code: def test_foreach_copy_with_multi_device_inputs(
      self, device, dtype, op
  ):
      foreach_copy_ = op.inplace_variant
      copy_ = op.ref_inplace
      for non_blocking in (False, True):
          for sample in op.sample_inputs(
              device, dtype, noncontiguous=False
          ):
              with torch.no_grad():
                  ref_input = [t.clone().detach() for t in sample.input]
              foreach_copy_(sample.input, sample.args[0], non_blocking)
              for t, s in zip(ref_input, sample.args[0]):
                  copy_(t, s, non_blocking)
              self.assertEqual(sample.input, ref_input)
              if torch.cuda.device_count() > 1:
                  device = torch.device("cuda", 1)
                  rhs_tensors = [t.to(device) for t in sample.args[0]]
                  foreach_copy_(sample.input, rhs_tensors, non_blocking)
                  for t, s in zip(ref_input, rhs_tensors):
                      copy_(t, s, non_blocking)
                  self.assertEqual(ref_input, sample.input)
  
imports: from contextlib import nullcontext
  from numbers import Number
  import random
  import re
  import torch
  import unittest
  import itertools
  import weakref
  from torch.testing import make_tensor
  from torch.testing._comparison import default_tolerances
  from torch.testing._internal.common_cuda import TEST_MULTIGPU
  from torch.testing._internal.common_utils import TestCase, run_tests, TEST_WITH_ROCM, skipIfTorchDynamo, parametrize, gradcheck
  from torch.testing._internal.common_device_type import instantiate_device_type_tests, dtypes, onlyCUDA, ops, OpDTypes
  from torch.testing._internal.common_methods_invocations import foreach_unary_op_db, foreach_binary_op_db, foreach_pointwise_op_db, foreach_reduce_op_db, foreach_other_op_db
  from torch.testing._internal.common_dtype import all_types_and_complex_and, floating_types_and, floating_types, integral_types_and
label_desc: Use image node_id 26 for calling the TestForeach obj's underlying member method code with example usage: obj.test_foreach_copy_with_multi_device_inputs(device, dtype, op) without return types