code: def test_copy():
      # Test copying array proxies
  
      # If the file-like is a file name, get a new lock
      proxy = ArrayProxy("dummyfile", ((10, 10, 10), np.float32))
      assert islock(proxy._lock)
      copied = proxy.copy()
      assert islock(copied._lock)
      assert proxy._lock is not copied._lock
  
      # If an open filehandle, the lock should be shared to
      # avoid changing filehandle state in critical sections
      proxy = ArrayProxy(BytesIO(), ((10, 10, 10), np.float32))
      assert islock(proxy._lock)
      copied = proxy.copy()
      assert islock(copied._lock)
      assert proxy._lock is copied._lock
  
imports: import contextlib
  import gzip
  import pickle
  from io import BytesIO
  from unittest import mock
  import numpy
  import pytest
  from numpy.testing import assert_array_almost_equal, assert_array_equal
  from packaging.version import Version
  from ..None import __version__
  from ..arrayproxy import ArrayProxy, get_obj_dtype, is_proxy, reshape_dataobj
  from ..deprecator import ExpiredDeprecationError
  from ..nifti1 import Nifti1Header, Nifti1Image
  from ..openers import ImageOpener
  from ..testing import memmap_after_ufunc
  from ..tmpdirs import InTemporaryDirectory
  from .test_fileslice import slicer_samples
  from .test_openers import patch_indexed_gzip
label_desc: Use image node_id 21 for calling a global function with example usage: test_copy() without return types