Preview: test_help_about.py
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/opt/alt/python37/lib64/python3.7/idlelib/idle_test/test_help_about.py
"""Test help_about, coverage 100%.
help_about.build_bits branches on sys.platform='darwin'.
'100% combines coverage on Mac and others.
"""
from idlelib import help_about
import unittest
from test.support import requires, findfile
from tkinter import Tk, TclError
from idlelib.idle_test.mock_idle import Func
from idlelib.idle_test.mock_tk import Mbox_func
from idlelib import textview
import os.path
from platform import python_version
About = help_about.AboutDialog
class LiveDialogTest(unittest.TestCase):
"""Simulate user clicking buttons other than [Close].
Test that invoked textview has text from source.
"""
@classmethod
def setUpClass(cls):
requires('gui')
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 test_build_bits(self):
self.assertIn(help_about.build_bits(), ('32', '64'))
def test_dialog_title(self):
"""Test about dialog title"""
self.assertEqual(self.dialog.title(), 'About IDLE')
def test_dialog_logo(self):
"""Test about dialog logo."""
path, file = os.path.split(self.dialog.icon_image['file'])
fn, ext = os.path.splitext(file)
self.assertEqual(fn, 'idle_48')
def test_printer_buttons(self):
"""Test buttons whose commands use printer function."""
dialog = self.dialog
button_sources = [(dialog.py_license, license, 'license'),
(dialog.py_copyright, copyright, 'copyright'),
(dialog.py_credits, credits, 'credits')]
for button, printer, name in button_sources:
with self.subTest(name=name):
printer._Printer__setup()
button.invoke()
get = dialog._current_textview.viewframe.textframe.text.get
lines = printer._Printer__lines
if len(lines) < 2:
self.fail(name + ' full text was not found')
self.assertEqual(lines[0], get('1.0', '1.end'))
self.assertEqual(lines[1], get('2.0', '2.end'))
dialog._current_textview.destroy()
def test_file_buttons(self):
"""Test buttons that display files."""
dialog = self.dialog
button_sources = [(self.dialog.readme, 'README.txt', 'readme'),
(self.dialog.idle_news, 'NEWS.txt', 'news'),
(self.dialog.idle_credits, 'CREDITS.txt', 'credits')]
for button, filename, name in button_sources:
with self.subTest(name=name):
button.invoke()
fn = findfile(filename, subdir='idlelib')
get = dialog._current_textview.viewframe.textframe.text.get
with open(fn, encoding='utf-8') as f:
self.assertEqual(f.readline().strip(), get('1.0', '1.end'))
f.readline()
self.assertEqual(f.readline().strip(), get('3.0', '3.end'))
dialog._current_textview.destroy()
class DefaultTitleTest(unittest.TestCase):
"Test default title."
@classmethod
def setUpClass(cls):
requires('gui')
cls.root = Tk()
cls.root.withdraw()
cls.dialog = About(cls.root, _utest=True)
@classmethod
def tearDownClass(cls):
del cls.dialog
cls.root.update_idletasks()
cls.root.destroy()
del cls.root
def test_dialog_title(self):
"""Test about dialog title"""
self.assertEqual(self.dialog.title(),
f'About IDLE {python_version()}'
f' ({help_about.build_bits()} bit)')
class CloseTest(unittest.TestCase):
"""Simulate user clicking [Close] button"""
@classmethod
def setUpClass(cls):
requires('gui')
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 test_close(self):
self.assertEqual(self.dialog.winfo_class(), 'Toplevel')
self.dialog.button_ok.invoke()
with self.assertRaises(TclError):
self.dialog.winfo_class()
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 DisplayFileTest(unittest.TestCase):
"""Test functions that display files.
While somewhat redundant with gui-based test_file_dialog,
these unit tests run on all buildbots, not just a few.
"""
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
@classmethod
def tearDownClass(cls):
textview.showerror = cls.orig_error
textview.view_text = cls.orig_view
def test_file_display(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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