code: def test_use(self):
      stream1 = cuda.Stream().use()
      assert stream1 == cuda.get_current_stream()
      self.stream.use()
      assert self.stream == cuda.get_current_stream()
  
imports: import gc
  import threading
  import unittest
  import pytest
  import cupy
  from cupy._creation import from_data
  from cupy import cuda
  from cupy import testing
label_desc: Use image node_id 12 for calling the TestStream obj's underlying member method code with example usage: obj.test_use() without return types