code: def test_context_and_use(self):
      dev0 = cuda.Device(0)
      dev1 = cuda.Device(1)
  
      dev1.use()
      with dev0:
          assert 0 == cuda.Device().id
          dev1.use()
          with dev1:
              assert 1 == cuda.Device().id
          assert 1 == cuda.Device().id
      assert 1 == cuda.Device().id
  
imports: import re
  import threading
  import unittest
  import pytest
  import cupy
  from cupy import cuda
  from cupy import testing
label_desc: Use image node_id 5 for calling the TestDeviceSwitch obj's underlying member method code with example usage: obj.test_context_and_use() without return types