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'''Test idlelib.help_about.
Coverage:
'''
from idlelib import help_about
from idlelib import textview
from idlelib.idle_test.mock_idle import Func
from idlelib.idle_test.mock_tk import Mbox_func
import unittest
About = help_about.AboutDialog
class Dummy_about_dialog():
# Dummy class for testing file display functions.
idle_credits = About.ShowIDLECredits
idle_readme = About.ShowIDLEAbout
idle_news = About.ShowIDLENEWS
# Called by the above
display_file_text = About.display_file_text
class DisplayFileTest(unittest.TestCase):
dialog = Dummy_about_dialog()
@classmethod
def setUpClass(cls):
cls.orig_error = textview.showerror
cls.orig_view = textview.view_text
cls.error = Mbox_func()
cls.view = Func()
textview.showerror = cls.error
textview.view_text = cls.view
cls.About = Dummy_about_dialog()
@classmethod
def tearDownClass(cls):
textview.showerror = cls.orig_error
textview.view_text = cls.orig_view
def test_file_isplay(self):
for handler in (self.dialog.idle_credits,
self.dialog.idle_readme,
self.dialog.idle_news):
self.error.message = ''
self.view.called = False
with self.subTest(handler=handler):
handler()
self.assertEqual(self.error.message, '')
self.assertEqual(self.view.called, True)
if __name__ == '__main__':
unittest.main(verbosity=2)
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