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import unittest
import tkinter
from test.support import requires, 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")
if __name__ == "__main__":
unittest.main()
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