'''Test idlelib.help_about. Coverage: 100% ''' from test.support import requires, findfile from tkinter import Tk, TclError import unittest from idlelib.idle_test.mock_idle import Func from idlelib.idle_test.mock_tk import Mbox_func from idlelib.help_about import AboutDialog as About from idlelib import textview 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_dialog_title(self): """Test about dialog title""" self.assertEqual(self.dialog.title(), 'About IDLE') def test_printer_buttons(self): """Test buttons whose commands use printer function.""" dialog = self.dialog button_sources = [(self.dialog.py_license, license), (self.dialog.py_copyright, copyright), (self.dialog.py_credits, credits)] for button, printer in button_sources: 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_buttons(self): """Test buttons that display files.""" dialog = self.dialog button_sources = [(self.dialog.readme, 'README.txt'), (self.dialog.idle_news, 'NEWS.txt'), (self.dialog.idle_credits, 'CREDITS.txt')] for button, filename in button_sources: 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 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)