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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
from test.support import requires, findfile
requires('gui')
from tkinter import Tk
import unittest
About = help_about.AboutDialog
class Dummy_about_dialog():
# Dummy class for testing file display functions.
idle_credits = About.show_idle_credits
idle_readme = About.show_readme
idle_news = About.show_idle_news
# Called by the above
display_file_text = About.display_file_text
_utest = True
class AboutDialogTest(unittest.TestCase):
@classmethod
def setUpClass(cls):
cls.root = Tk()
cls.root.withdraw()
cls.dialog = About(cls.root, 'About IDLE', _utest=True)
@classmethod
def tearDownClass(cls):
del cls.dialog
cls.root.update_idletasks()
cls.root.destroy()
del cls.root
def tearDown(self):
if self.dialog._current_textview:
self.dialog._current_textview.destroy()
def test_dialog_title(self):
"""This will test about dialog title"""
self.assertEqual(self.dialog.title(), 'About IDLE')
def test_printer_dialog(self):
"""This will test dialog which using printer"""
buttons = [(license, self.dialog.py_license),
(copyright, self.dialog.py_copyright),
(credits, self.dialog.py_credits)]
for printer, button in buttons:
dialog = self.dialog
printer._Printer__setup()
button.invoke()
self.assertEqual(printer._Printer__lines[0],
dialog._current_textview.textView.get('1.0', '1.end'))
self.assertEqual(printer._Printer__lines[1],
dialog._current_textview.textView.get('2.0', '2.end'))
dialog._current_textview.destroy()
def test_file_dialog(self):
"""This will test dialog which using file"""
buttons = [('README.txt', self.dialog.readme),
('NEWS.txt', self.dialog.idle_news),
('CREDITS.txt', self.dialog.idle_credits)]
for filename, button in buttons:
dialog = self.dialog
button.invoke()
fn = findfile(filename, subdir='idlelib')
with open(fn) as f:
self.assertEqual(f.readline().strip(),
dialog._current_textview.textView.get('1.0', '1.end'))
f.readline()
self.assertEqual(f.readline().strip(),
dialog._current_textview.textView.get('3.0', '3.end'))
dialog._current_textview.destroy()
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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