code: def test_simple(self):
      def add_self(x):
          return x + x
  
      def relu_(x):
          return torch.nn.functional.relu_(x)
  
      functions = [add_self, relu_]
  
      for in_device, fn in product(self.device_types, functions):
          self.assert_device_equal(fn, [in_device], in_device)
  
imports: from itertools import product
  import unittest
  import torch
  from torch.testing._internal.common_utils import TEST_CUDA
  from torch.testing._internal.jit_utils import JitTestCase
  from torch.jit._passes._property_propagation import apply_input_props_using_example
label_desc: Use image node_id 7 for calling the TestDeviceAnalysis obj's underlying member method code with example usage: obj.test_simple() and returns: unknown, torch