'''Test idlelib.parenmatch. This must currently be a gui test because ParenMatch methods use several text methods not defined on idlelib.idle_test.mock_tk.Text. ''' from test.support import requires requires('gui') import unittest from unittest.mock import Mock from tkinter import Tk, Text from idlelib.parenmatch import ParenMatch class DummyEditwin: def __init__(self, text): self.text = text self.indentwidth = 8 self.tabwidth = 8 self.context_use_ps1 = True class ParenMatchTest(unittest.TestCase): @classmethod def setUpClass(cls): cls.root = Tk() cls.root.withdraw() cls.text = Text(cls.root) cls.editwin = DummyEditwin(cls.text) cls.editwin.text_frame = Mock() @classmethod def tearDownClass(cls): del cls.text, cls.editwin cls.root.update_idletasks() cls.root.destroy() del cls.root def tearDown(self): self.text.delete('1.0', 'end') def get_parenmatch(self): pm = ParenMatch(self.editwin) pm.bell = lambda: None return pm def test_paren_expression(self): """ Test ParenMatch with 'expression' style. """ text = self.text pm = self.get_parenmatch() pm.set_style('expression') text.insert('insert', 'def foobar(a, b') pm.flash_paren_event('event') self.assertIn('<>', text.event_info()) self.assertTupleEqual(text.tag_prevrange('paren', 'end'), ('1.10', '1.15')) text.insert('insert', ')') pm.restore_event() self.assertNotIn('<>', text.event_info()) self.assertEqual(text.tag_prevrange('paren', 'end'), ()) # paren_closed_event can only be tested as below pm.paren_closed_event('event') self.assertTupleEqual(text.tag_prevrange('paren', 'end'), ('1.10', '1.16')) def test_paren_default(self): """ Test ParenMatch with 'default' style. """ text = self.text pm = self.get_parenmatch() pm.set_style('default') text.insert('insert', 'def foobar(a, b') pm.flash_paren_event('event') self.assertIn('<>', text.event_info()) self.assertTupleEqual(text.tag_prevrange('paren', 'end'), ('1.10', '1.11')) text.insert('insert', ')') pm.restore_event() self.assertNotIn('<>', text.event_info()) self.assertEqual(text.tag_prevrange('paren', 'end'), ()) def test_paren_corner(self): """ Test corner cases in flash_paren_event and paren_closed_event. These cases force conditional expression and alternate paths. """ text = self.text pm = self.get_parenmatch() text.insert('insert', '# this is a commen)') pm.paren_closed_event('event') text.insert('insert', '\ndef') pm.flash_paren_event('event') pm.paren_closed_event('event') text.insert('insert', ' a, *arg)') pm.paren_closed_event('event') def test_handle_restore_timer(self): pm = self.get_parenmatch() pm.restore_event = Mock() pm.handle_restore_timer(0) self.assertTrue(pm.restore_event.called) pm.restore_event.reset_mock() pm.handle_restore_timer(1) self.assertFalse(pm.restore_event.called) if __name__ == '__main__': unittest.main(verbosity=2)