cpython/Lib/tkinter/test/test_tkinter/test_simpledialog.py
Serhiy Storchaka 87e7a14ee3
[3.9] bpo-42630: Improve error reporting in Tkinter for absent default root (GH-23781) (GH-23853)
* Tkinter functions and constructors which need a default root window
  raise now RuntimeError with descriptive message instead of obscure
  AttributeError or NameError if it is not created yet or cannot
  be created automatically.

* Add tests for all functions which use default root window.

* Fix import in the pynche script.

(cherry picked from commit 3d569fd6dc)
2020-12-19 13:08:07 +02:00

25 lines
780 B
Python

import unittest
import tkinter
from test.support import requires, run_unittest, swap_attr
from tkinter.test.support import AbstractDefaultRootTest
from tkinter.simpledialog import Dialog, askinteger
requires('gui')
class DefaultRootTest(AbstractDefaultRootTest, unittest.TestCase):
def test_askinteger(self):
self.assertRaises(RuntimeError, askinteger, "Go To Line", "Line number")
root = tkinter.Tk()
with swap_attr(Dialog, 'wait_window', lambda self, w: w.destroy()):
askinteger("Go To Line", "Line number")
root.destroy()
tkinter.NoDefaultRoot()
self.assertRaises(RuntimeError, askinteger, "Go To Line", "Line number")
tests_gui = (DefaultRootTest,)
if __name__ == "__main__":
run_unittest(*tests_gui)