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.
"""

fromidlelibimporthelp_about
importunittest
fromtest.supportimportrequires, findfile
fromtkinterimportTk, TclError
fromidlelib.idle_test.mock_idleimportFunc
fromidlelib.idle_test.mock_tkimportMbox_func
fromidlelibimporttextview
importos.path
fromplatformimportpython_version

About=help_about.AboutDialog


classLiveDialogTest(unittest.TestCase):
"""Simulate user clicking buttons other than [Close].

 Test that invoked textview has text from source.
 """
@classmethod
defsetUpClass(cls):
requires('gui')
cls.root=Tk()
cls.root.withdraw()
cls.dialog=About(cls.root, 'About IDLE', _utest=True)

@classmethod
deftearDownClass(cls):
delcls.dialog
cls.root.update_idletasks()
cls.root.destroy()
delcls.root

deftest_build_bits(self):
self.assertIn(help_about.bits, ('32', '64'))

deftest_dialog_title(self):
"""Test about dialog title"""
self.assertEqual(self.dialog.title(), 'About IDLE')

deftest_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')

deftest_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')]

forbutton, printer, nameinbutton_sources:
withself.subTest(name=name):
printer._Printer__setup()
button.invoke()
get=dialog._current_textview.viewframe.textframe.text.get
lines=printer._Printer__lines
iflen(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()

deftest_file_buttons(self):
"""Test buttons that display files."""
dialog=self.dialog
button_sources= [(self.dialog.readme, 'README.txt', 'readme'),
 (self.dialog.idle_news, 'News3.txt', 'news'),
 (self.dialog.idle_credits, 'CREDITS.txt', 'credits')]

forbutton, filename, nameinbutton_sources:
withself.subTest(name=name):
button.invoke()
fn=findfile(filename, subdir='idlelib')
get=dialog._current_textview.viewframe.textframe.text.get
withopen(fn, encoding='utf-8') asf:
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()


classDefaultTitleTest(unittest.TestCase):
"Test default title."

@classmethod
defsetUpClass(cls):
requires('gui')
cls.root=Tk()
cls.root.withdraw()
cls.dialog=About(cls.root, _utest=True)

@classmethod
deftearDownClass(cls):
delcls.dialog
cls.root.update_idletasks()
cls.root.destroy()
delcls.root

deftest_dialog_title(self):
"""Test about dialog title"""
self.assertEqual(self.dialog.title(),
f'About IDLE {python_version()}'
f' ({help_about.bits} bit)')


classCloseTest(unittest.TestCase):
"""Simulate user clicking [Close] button"""

@classmethod
defsetUpClass(cls):
requires('gui')
cls.root=Tk()
cls.root.withdraw()
cls.dialog=About(cls.root, 'About IDLE', _utest=True)

@classmethod
deftearDownClass(cls):
delcls.dialog
cls.root.update_idletasks()
cls.root.destroy()
delcls.root

deftest_close(self):
self.assertEqual(self.dialog.winfo_class(), 'Toplevel')
self.dialog.button_ok.invoke()
withself.assertRaises(TclError):
self.dialog.winfo_class()


classDummy_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


classDisplayFileTest(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
defsetUpClass(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
deftearDownClass(cls):
textview.showerror=cls.orig_error
textview.view_text=cls.orig_view

deftest_file_display(self):
forhandlerin (self.dialog.idle_credits,
self.dialog.idle_readme,
self.dialog.idle_news):
self.error.message=''
self.view.called=False
withself.subTest(handler=handler):
handler()
self.assertEqual(self.error.message, '')
self.assertEqual(self.view.called, True)


if__name__=='__main__':
unittest.main(verbosity=2)