晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Current File : //usr/lib64/python2.7/idlelib/idle_test/test_parenmatch.py
"""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.

import unittest
from test.test_support import requires
from Tkinter import Tk, Text
from idlelib.ParenMatch import ParenMatch

class Mock:  # 2.7 does not have unittest.mock
    def __init__(self, *args, **kwargs):
        self.called = False

    def __call__(self, *args, **kwargs):
        self.called = True

    def reset_mock(self, *args, **kwargs):
        self.called = False

    def after(self, *args, **kwargs):
        pass

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):
        requires('gui')
        cls.root = Tk()
        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.destroy()
        del cls.root

    def tearDown(self):
        self.text.delete('1.0', 'end')

    def test_paren_expression(self):
        """
        Test ParenMatch with 'expression' style.
        """
        text = self.text
        pm = ParenMatch(self.editwin)
        pm.set_style('expression')

        text.insert('insert', 'def foobar(a, b')
        pm.flash_paren_event('event')
        self.assertIn('<<parenmatch-check-restore>>', text.event_info())
        self.assertTupleEqual(text.tag_prevrange('paren', 'end'),
                             ('1.10', '1.15'))
        text.insert('insert', ')')
        pm.restore_event()
        self.assertNotIn('<<parenmatch-check-restore>>', 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 = ParenMatch(self.editwin)
        pm.set_style('default')

        text.insert('insert', 'def foobar(a, b')
        pm.flash_paren_event('event')
        self.assertIn('<<parenmatch-check-restore>>', text.event_info())
        self.assertTupleEqual(text.tag_prevrange('paren', 'end'),
                             ('1.10', '1.11'))
        text.insert('insert', ')')
        pm.restore_event()
        self.assertNotIn('<<parenmatch-check-restore>>', 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 = ParenMatch(self.editwin)

        text.insert('insert', '# this is a commen)')
        self.assertIsNone(pm.paren_closed_event('event'))

        text.insert('insert', '\ndef')
        self.assertIsNone(pm.flash_paren_event('event'))
        self.assertIsNone(pm.paren_closed_event('event'))

        text.insert('insert', ' a, *arg)')
        self.assertIsNone(pm.paren_closed_event('event'))

    def test_handle_restore_timer(self):
        pm = ParenMatch(self.editwin)
        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)

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