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import unittest
from unittest.mock import patch
import builtins
import rlcompleter
from test.support import MISSING_C_DOCSTRINGS
class CompleteMe:
""" Trivial class used in testing rlcompleter.Completer. """
spam = 1
_ham = 2
class TestRlcompleter(unittest.TestCase):
def setUp(self):
self.stdcompleter = rlcompleter.Completer()
self.completer = rlcompleter.Completer(dict(spam=int,
egg=str,
CompleteMe=CompleteMe))
# forces stdcompleter to bind builtins namespace
self.stdcompleter.complete('', 0)
def test_namespace(self):
class A(dict):
pass
class B(list):
pass
self.assertTrue(self.stdcompleter.use_main_ns)
self.assertFalse(self.completer.use_main_ns)
self.assertFalse(rlcompleter.Completer(A()).use_main_ns)
self.assertRaises(TypeError, rlcompleter.Completer, B((1,)))
def test_global_matches(self):
# test with builtins namespace
self.assertEqual(sorted(self.stdcompleter.global_matches('di')),
[x+'(' for x in dir(builtins) if x.startswith('di')])
self.assertEqual(sorted(self.stdcompleter.global_matches('st')),
[x+'(' for x in dir(builtins) if x.startswith('st')])
self.assertEqual(self.stdcompleter.global_matches('akaksajadhak'), [])
# test with a customized namespace
self.assertEqual(self.completer.global_matches('CompleteM'),
['CompleteMe(' if MISSING_C_DOCSTRINGS else 'CompleteMe()'])
self.assertEqual(self.completer.global_matches('eg'),
['egg('])
# XXX: see issue5256
self.assertEqual(self.completer.global_matches('CompleteM'),
['CompleteMe(' if MISSING_C_DOCSTRINGS else 'CompleteMe()'])
def test_attr_matches(self):
# test with builtins namespace
self.assertEqual(self.stdcompleter.attr_matches('str.s'),
['str.{}('.format(x) for x in dir(str)
if x.startswith('s')])
self.assertEqual(self.stdcompleter.attr_matches('tuple.foospamegg'), [])
def create_expected_for_none():
if not MISSING_C_DOCSTRINGS:
parentheses = ('__init_subclass__', '__class__')
else:
# When `--without-doc-strings` is used, `__class__`
# won't have a known signature.
parentheses = ('__init_subclass__',)
items = set()
for x in dir(None):
if x in parentheses:
items.add(f'None.{x}()')
elif x == '__doc__':
items.add(f'None.{x}')
else:
items.add(f'None.{x}(')
return sorted(items)
expected = create_expected_for_none()
self.assertEqual(self.stdcompleter.attr_matches('None.'), expected)
self.assertEqual(self.stdcompleter.attr_matches('None._'), expected)
self.assertEqual(self.stdcompleter.attr_matches('None.__'), expected)
# test with a customized namespace
self.assertEqual(self.completer.attr_matches('CompleteMe.sp'),
['CompleteMe.spam'])
self.assertEqual(self.completer.attr_matches('Completeme.egg'), [])
self.assertEqual(self.completer.attr_matches('CompleteMe.'),
['CompleteMe.mro()', 'CompleteMe.spam'])
self.assertEqual(self.completer.attr_matches('CompleteMe._'),
['CompleteMe._ham'])
matches = self.completer.attr_matches('CompleteMe.__')
for x in matches:
self.assertTrue(x.startswith('CompleteMe.__'), x)
self.assertIn('CompleteMe.__name__', matches)
self.assertIn('CompleteMe.__new__(', matches)
with patch.object(CompleteMe, "me", CompleteMe, create=True):
self.assertEqual(self.completer.attr_matches('CompleteMe.me.me.sp'),
['CompleteMe.me.me.spam'])
self.assertEqual(self.completer.attr_matches('egg.s'),
['egg.{}('.format(x) for x in dir(str)
if x.startswith('s')])
def test_excessive_getattr(self):
"""Ensure getattr() is invoked no more than once per attribute"""
# note the special case for @property methods below; that is why
# we use __dir__ and __getattr__ in class Foo to create a "magic"
# class attribute 'bar'. This forces `getattr` to call __getattr__
# (which is doesn't necessarily do).
class Foo:
calls = 0
bar = ''
def __getattribute__(self, name):
if name == 'bar':
self.calls += 1
return None
return super().__getattribute__(name)
f = Foo()
completer = rlcompleter.Completer(dict(f=f))
self.assertEqual(completer.complete('f.b', 0), 'f.bar')
self.assertEqual(f.calls, 1)
def test_property_method_not_called(self):
class Foo:
_bar = 0
property_called = False
@property
def bar(self):
self.property_called = True
return self._bar
f = Foo()
completer = rlcompleter.Completer(dict(f=f))
self.assertEqual(completer.complete('f.b', 0), 'f.bar')
self.assertFalse(f.property_called)
def test_uncreated_attr(self):
# Attributes like properties and slots should be completed even when
# they haven't been created on an instance
class Foo:
__slots__ = ("bar",)
completer = rlcompleter.Completer(dict(f=Foo()))
self.assertEqual(completer.complete('f.', 0), 'f.bar')
@unittest.mock.patch('rlcompleter._readline_available', False)
def test_complete(self):
completer = rlcompleter.Completer()
self.assertEqual(completer.complete('', 0), '\t')
self.assertEqual(completer.complete('a', 0), 'and ')
self.assertEqual(completer.complete('a', 1), 'as ')
self.assertEqual(completer.complete('as', 2), 'assert ')
self.assertEqual(completer.complete('an', 0), 'and ')
self.assertEqual(completer.complete('pa', 0), 'pass')
self.assertEqual(completer.complete('Fa', 0), 'False')
self.assertEqual(completer.complete('el', 0), 'elif ')
self.assertEqual(completer.complete('el', 1), 'else')
self.assertEqual(completer.complete('tr', 0), 'try:')
self.assertEqual(completer.complete('_', 0), '_')
self.assertEqual(completer.complete('match', 0), 'match ')
self.assertEqual(completer.complete('case', 0), 'case ')
def test_duplicate_globals(self):
namespace = {
'False': None, # Keyword vs builtin vs namespace
'assert': None, # Keyword vs namespace
'try': lambda: None, # Keyword vs callable
'memoryview': None, # Callable builtin vs non-callable
'Ellipsis': lambda: None, # Non-callable builtin vs callable
}
completer = rlcompleter.Completer(namespace)
self.assertEqual(completer.complete('False', 0), 'False')
self.assertIsNone(completer.complete('False', 1)) # No duplicates
# Space or colon added due to being a reserved keyword
self.assertEqual(completer.complete('assert', 0), 'assert ')
self.assertIsNone(completer.complete('assert', 1))
self.assertEqual(completer.complete('try', 0), 'try:')
self.assertIsNone(completer.complete('try', 1))
# No opening bracket "(" because we overrode the built-in class
self.assertEqual(completer.complete('memoryview', 0), 'memoryview')
self.assertIsNone(completer.complete('memoryview', 1))
self.assertEqual(completer.complete('Ellipsis', 0), 'Ellipsis()')
self.assertIsNone(completer.complete('Ellipsis', 1))
if __name__ == '__main__':
unittest.main()
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