"""Test parenmatch, coverage 91%. This must currently be a gui test because ParenMatch methods use several text methods not defined on idlelib.idle_test.mock_tk.Text. """ from idlelib.parenmatch import ParenMatch from test.support import requires requires('gui') import unittest from unittest.mock import Mock from tkinter import Tk, Text class DummyEditwin: def __init__(self, text): self.text = text self.indentwidth = 8 self.tabwidth = 8 self.prompt_last_line = '>>>' # Currently not used by parenmatch. 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_styles(self): """ Test ParenMatch with each style. """ text = self.text pm = self.get_parenmatch() for style, range1, range2 in ( ('opener', ('1.10', '1.11'), ('1.10', '1.11')), ('default',('1.10', '1.11'),('1.10', '1.11')), ('parens', ('1.14', '1.15'), ('1.15', '1.16')), ('expression', ('1.10', '1.15'), ('1.10', '1.16'))): with self.subTest(style=style): text.delete('1.0', 'end') pm.STYLE = style text.insert('insert', 'def foobar(a, b') pm.flash_paren_event('event') self.assertIn('<>', text.event_info()) if style == 'parens': self.assertTupleEqual(text.tag_nextrange('paren', '1.0'), ('1.10', '1.11')) self.assertTupleEqual( text.tag_prevrange('paren', 'end'), range1) text.insert('insert', ')') pm.restore_event() self.assertNotIn('<>', text.event_info()) self.assertEqual(text.tag_prevrange('paren', 'end'), ()) pm.paren_closed_event('event') self.assertTupleEqual( text.tag_prevrange('paren', 'end'), range2) 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)