test_widgets.py 文件源码

def test_invoke(self):
        success = []
        def cb_test():
            success.append(1)
            return "cb test called"

        myvar = tkinter.IntVar(self.root)
        cbtn = ttk.Radiobutton(self.root, command=cb_test,
                               variable=myvar, value=0)
        cbtn2 = ttk.Radiobutton(self.root, command=cb_test,
                                variable=myvar, value=1)

        if self.wantobjects:
            conv = lambda x: x
        else:
            conv = int

        res = cbtn.invoke()
        self.assertEqual(res, "cb test called")
        self.assertEqual(conv(cbtn['value']), myvar.get())
        self.assertEqual(myvar.get(),
            conv(cbtn.tk.globalgetvar(cbtn['variable'])))
        self.assertTrue(success)

        cbtn2['command'] = ''
        res = cbtn2.invoke()
        self.assertEqual(str(res), '')
        self.assertLessEqual(len(success), 1)
        self.assertEqual(conv(cbtn2['value']), myvar.get())
        self.assertEqual(myvar.get(),
            conv(cbtn.tk.globalgetvar(cbtn['variable'])))

        self.assertEqual(str(cbtn['variable']), str(cbtn2['variable']))