Method checkInvalidParam

Lib/test/test_tkinter/widget_tests.py:68–78

(self, widget, name, value, errmsg=None)

        self.assertEqual2(t[4], expected, eq=eq)

    def checkInvalidParam(self, widget, name, value, errmsg=None):
        orig = widget[name]
        if errmsg is not None:
            errmsg = errmsg.format(re.escape(str(value)))
            errmsg = fr'\A{errmsg}\z'
        with self.assertRaisesRegex(tkinter.TclError, errmsg or ''):
            widget[name] = value
        self.assertEqual(widget[name], orig)
        with self.assertRaisesRegex(tkinter.TclError, errmsg or ''):
            widget.configure({name: value})
        self.assertEqual(widget[name], orig)

    def checkParams(self, widget, name, *values, **kwargs):
        for value in values: