def test_do_get_size(self):
# The layout offset and size is based by cell.box_size(widget)
# box_size is cached, and this can be set ensure a predictable result.
cell = CellRendererGraph()
cell.columns_len = 1
cell._box_size = 21
treeview = Gtk.TreeView()
self.assertEqual(
(0, 0, 44, 22), cell.do_get_size(treeview, None))
