def nested_file(monkeypatch):
monkeypatch.setattr(BoxFolder, 'set_box_item', MagicMock())
monkeypatch.setattr(BoxFile, 'set_box_item', MagicMock())
fold1 = BoxFolder()
fold1.name = 'fold1'
fold2 = BoxFolder(parent=fold1)
fold2.name = 'fold2'
file1 = BoxFile(parent=fold2)
file1.name = 'file1'
fold1._items = [fold2]
fold2._items = [file1]
return file1
