def testGetParentFileEntry(self):
    file_entry = self._file_system.GetFileEntryByPathSpec(
        self._encrypted_stream_path_spec)
    self.assertIsNotNone(file_entry)

    parent_file_entry = file_entry.GetParentFileEntry()
    self.assertIsNone(parent_file_entry)
@see: twisted.names.client.lookupSenderPolicy
dataset/ETHPy150Open log2timeline/dfvfs/tests/vfs/encrypted_stream_file_entry.py/EncryptedStreamFileEntryTest.testGetParentFileEntry--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/names/common.py/ResolverBase.lookupSenderPolicy