code: def test_command_queue_context_manager(ctx_factory):
      ctx = ctx_factory()
      with cl.CommandQueue(ctx) as queue:
          q = queue
  
      with pytest.warns(cl.CommandQueueUsedAfterExit):
          q.flush()
  
imports: import numpy
  import numpy.linalg
  import pytest
  import pyopencl
  import pyopencl.array
  import pyopencl.cltypes
  import pyopencl.clrandom
  from pyopencl.tools import pytest_generate_tests_for_pyopencl, ImmediateAllocator, DeferredAllocator
  from pyopencl.characterize import get_pocl_version
label_desc: Use image node_id 39 for calling a global function with example usage: test_command_queue_context_manager(ctx_factory) without return types