test_extensions.py 文件源码

def test_initialization(self):
        self.assertRaises(tkinter.TclError,
            ttk.OptionMenu, self.root, self.textvar, invalid='thing')

        optmenu = ttk.OptionMenu(self.root, self.textvar, 'b', 'a', 'b')
        self.assertEqual(optmenu._variable.get(), 'b')

        self.assertTrue(optmenu['menu'])
        self.assertTrue(optmenu['textvariable'])

        optmenu.destroy()