def test_export_import(self):
import tempfile
from os import mkdir
from os import rmdir
from os import unlink
from os.path import join
from os.path import split
from OFS.Folder import Folder
from OFS.Image import File
from transaction import commit
from ZODB.DB import DB
from ZODB.DemoStorage import DemoStorage
try:
tf = None # temporary file required for export/import
# export/import needs the object manager in ZODB
s = DemoStorage()
db = DB(s)
c = db.open()
root = c.root()
top = Folder("top")
f = File("f", "", b"")
top._setObject(f.getId(), f)
root["top"] = top
tmp = Folder("tmp")
top._setObject(tmp.getId(), tmp)
commit()
exported = top.manage_exportObject("f", True)
tdir = tempfile.mkdtemp()
idir = join(tdir, "import")
mkdir(idir)
tf = tempfile.NamedTemporaryFile(dir=idir, delete=False)
tf.write(exported)
tf.close()
unused, tname = split(tf.name)
tmp._getImportPaths = _CallResult((tdir, ))
tmp.manage_importObject(tname,
set_owner=False,
suppress_events=True)
imp_f = tmp["f"] # exception if import unsuccessful
self.assertIsInstance(imp_f, File)
commit()
finally:
if tf is not None: # pragma: no cover
unlink(tf.name)
rmdir(idir)
rmdir(tdir)
c.close()
db.close()
s.close()
