code: def test_proxy_memory_pool():
      pool = pa.proxy_memory_pool(pa.default_memory_pool())
      check_allocated_bytes(pool)
      wr = weakref.ref(pool)
      assert wr() is not None
      del pool
      assert wr() is None
  
imports: import contextlib
  import os
  import signal
  import subprocess
  import sys
  import weakref
  import pyarrow
  import pytest
label_desc: Use image node_id 5 for calling a global function with example usage: test_proxy_memory_pool() without return types