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"""Test certbot.display.completer."""
import os
try:
import readline # pylint: disable=import-error
except ImportError:
import certbot.display.dummy_readline as readline # type: ignore
import string
import sys
import unittest
import mock
from six.moves import reload_module # pylint: disable=import-error
from acme.magic_typing import List # pylint: disable=unused-import, no-name-in-module
import certbot.tests.util as test_util
class CompleterTest(test_util.TempDirTestCase):
"""Test certbot.display.completer.Completer."""
def setUp(self):
super(CompleterTest, self).setUp()
# directories must end with os.sep for completer to
# search inside the directory for possible completions
if self.tempdir[-1] != os.sep:
self.tempdir += os.sep
self.paths = [] # type: List[str]
# create some files and directories in temp_dir
for c in string.ascii_lowercase:
path = os.path.join(self.tempdir, c)
self.paths.append(path)
if ord(c) % 2:
os.mkdir(path)
else:
with open(path, 'w'):
pass
def test_complete(self):
from certbot.display import completer
my_completer = completer.Completer()
num_paths = len(self.paths)
for i in range(num_paths):
completion = my_completer.complete(self.tempdir, i)
self.assertTrue(completion in self.paths)
self.paths.remove(completion)
self.assertFalse(self.paths)
completion = my_completer.complete(self.tempdir, num_paths)
self.assertEqual(completion, None)
@unittest.skipIf('readline' not in sys.modules,
reason='Not relevant if readline is not available.')
def test_import_error(self):
original_readline = sys.modules['readline']
sys.modules['readline'] = None
self.test_context_manager_with_unmocked_readline()
sys.modules['readline'] = original_readline
def test_context_manager_with_unmocked_readline(self):
from certbot.display import completer
reload_module(completer)
original_completer = readline.get_completer()
original_delims = readline.get_completer_delims()
with completer.Completer():
pass
self.assertEqual(readline.get_completer(), original_completer)
self.assertEqual(readline.get_completer_delims(), original_delims)
@mock.patch('certbot.display.completer.readline', autospec=True)
def test_context_manager_libedit(self, mock_readline):
mock_readline.__doc__ = 'libedit'
self._test_context_manager_with_mock_readline(mock_readline)
@mock.patch('certbot.display.completer.readline', autospec=True)
def test_context_manager_readline(self, mock_readline):
mock_readline.__doc__ = 'GNU readline'
self._test_context_manager_with_mock_readline(mock_readline)
def _test_context_manager_with_mock_readline(self, mock_readline):
from certbot.display import completer
mock_readline.parse_and_bind.side_effect = enable_tab_completion
with completer.Completer():
pass
self.assertTrue(mock_readline.parse_and_bind.called)
def enable_tab_completion(unused_command):
"""Enables readline tab completion using the system specific syntax."""
libedit = readline.__doc__ is not None and 'libedit' in readline.__doc__
command = 'bind ^I rl_complete' if libedit else 'tab: complete'
readline.parse_and_bind(command)
if __name__ == "__main__":
unittest.main() # pragma: no cover