code: def test_open_closed():
      """Get an exception when opening a dataset on a closed MemoryFile"""
      memfile = MemoryFile()
      memfile.close()
      assert memfile.closed
      with pytest.raises(OSError):
          memfile.open()
  
imports: import os
  from io import BytesIO
  import pytest
  import fiona
  from fiona import supported_drivers
  from fiona.drvsupport import _driver_supports_mode
  from fiona.errors import DriverError
  from fiona.io import MemoryFile, ZipMemoryFile
  from fiona.meta import supports_vsi
  from .conftest import requires_gdal2, requires_gpkg
label_desc: Use image node_id 9 for calling a global function with example usage: test_open_closed() without return types