test_extensions.py 文件源码

def test_widget_destroy(self):
        var = tkinter.StringVar()
        optmenu = ttk.OptionMenu(None, var)
        name = var._name
        optmenu.update_idletasks()
        optmenu.destroy()
        self.assertEqual(optmenu.tk.globalgetvar(name), var.get())
        del var
        self.assertRaises(tkinter.TclError, optmenu.tk.globalgetvar, name)