377 lines
12 KiB
Python
377 lines
12 KiB
Python
|
import unittest
|
||
|
|
from test import test_support
|
||
|
|
from weakref import proxy, ref, WeakSet
|
||
|
|
import operator
|
||
|
|
import copy
|
||
|
|
import string
|
||
|
|
import os
|
||
|
|
from random import randrange, shuffle
|
||
|
|
import sys
|
||
|
|
import warnings
|
||
|
|
import collections
|
||
|
|
import gc
|
||
|
|
import contextlib
|
||
|
|
|
||
|
|
|
||
|
|
class Foo:
|
||
|
|
pass
|
||
|
|
|
||
|
|
class SomeClass(object):
|
||
|
|
def __init__(self, value):
|
||
|
|
self.value = value
|
||
|
|
def __eq__(self, other):
|
||
|
|
if type(other) != type(self):
|
||
|
|
return False
|
||
|
|
return other.value == self.value
|
||
|
|
|
||
|
|
def __ne__(self, other):
|
||
|
|
return not self.__eq__(other)
|
||
|
|
|
||
|
|
def __hash__(self):
|
||
|
|
return hash((SomeClass, self.value))
|
||
|
|
|
||
|
|
class TestWeakSet(unittest.TestCase):
|
||
|
|
|
||
|
|
def setUp(self):
|
||
|
|
# need to keep references to them
|
||
|
|
self.items = [SomeClass(c) for c in ('a', 'b', 'c')]
|
||
|
|
self.items2 = [SomeClass(c) for c in ('x', 'y', 'z')]
|
||
|
|
self.letters = [SomeClass(c) for c in string.ascii_letters]
|
||
|
|
self.s = WeakSet(self.items)
|
||
|
|
self.d = dict.fromkeys(self.items)
|
||
|
|
self.obj = SomeClass('F')
|
||
|
|
self.fs = WeakSet([self.obj])
|
||
|
|
|
||
|
|
def test_methods(self):
|
||
|
|
weaksetmethods = dir(WeakSet)
|
||
|
|
for method in dir(set):
|
||
|
|
if method == 'test_c_api' or method.startswith('_'):
|
||
|
|
continue
|
||
|
|
self.assertIn(method, weaksetmethods,
|
||
|
|
"WeakSet missing method " + method)
|
||
|
|
|
||
|
|
def test_new_or_init(self):
|
||
|
|
self.assertRaises(TypeError, WeakSet, [], 2)
|
||
|
|
|
||
|
|
def test_len(self):
|
||
|
|
self.assertEqual(len(self.s), len(self.d))
|
||
|
|
self.assertEqual(len(self.fs), 1)
|
||
|
|
del self.obj
|
||
|
|
self.assertEqual(len(self.fs), 0)
|
||
|
|
|
||
|
|
def test_contains(self):
|
||
|
|
for c in self.letters:
|
||
|
|
self.assertEqual(c in self.s, c in self.d)
|
||
|
|
self.assertRaises(TypeError, self.s.__contains__, [[]])
|
||
|
|
self.assertIn(self.obj, self.fs)
|
||
|
|
del self.obj
|
||
|
|
self.assertNotIn(SomeClass('F'), self.fs)
|
||
|
|
|
||
|
|
def test_union(self):
|
||
|
|
u = self.s.union(self.items2)
|
||
|
|
for c in self.letters:
|
||
|
|
self.assertEqual(c in u, c in self.d or c in self.items2)
|
||
|
|
self.assertEqual(self.s, WeakSet(self.items))
|
||
|
|
self.assertEqual(type(u), WeakSet)
|
||
|
|
self.assertRaises(TypeError, self.s.union, [[]])
|
||
|
|
for C in set, frozenset, dict.fromkeys, list, tuple:
|
||
|
|
x = WeakSet(self.items + self.items2)
|
||
|
|
c = C(self.items2)
|
||
|
|
self.assertEqual(self.s.union(c), x)
|
||
|
|
|
||
|
|
def test_or(self):
|
||
|
|
i = self.s.union(self.items2)
|
||
|
|
self.assertEqual(self.s | set(self.items2), i)
|
||
|
|
self.assertEqual(self.s | frozenset(self.items2), i)
|
||
|
|
|
||
|
|
def test_intersection(self):
|
||
|
|
i = self.s.intersection(self.items2)
|
||
|
|
for c in self.letters:
|
||
|
|
self.assertEqual(c in i, c in self.d and c in self.items2)
|
||
|
|
self.assertEqual(self.s, WeakSet(self.items))
|
||
|
|
self.assertEqual(type(i), WeakSet)
|
||
|
|
for C in set, frozenset, dict.fromkeys, list, tuple:
|
||
|
|
x = WeakSet([])
|
||
|
|
self.assertEqual(self.s.intersection(C(self.items2)), x)
|
||
|
|
|
||
|
|
def test_isdisjoint(self):
|
||
|
|
self.assertTrue(self.s.isdisjoint(WeakSet(self.items2)))
|
||
|
|
self.assertTrue(not self.s.isdisjoint(WeakSet(self.letters)))
|
||
|
|
|
||
|
|
def test_and(self):
|
||
|
|
i = self.s.intersection(self.items2)
|
||
|
|
self.assertEqual(self.s & set(self.items2), i)
|
||
|
|
self.assertEqual(self.s & frozenset(self.items2), i)
|
||
|
|
|
||
|
|
def test_difference(self):
|
||
|
|
i = self.s.difference(self.items2)
|
||
|
|
for c in self.letters:
|
||
|
|
self.assertEqual(c in i, c in self.d and c not in self.items2)
|
||
|
|
self.assertEqual(self.s, WeakSet(self.items))
|
||
|
|
self.assertEqual(type(i), WeakSet)
|
||
|
|
self.assertRaises(TypeError, self.s.difference, [[]])
|
||
|
|
|
||
|
|
def test_sub(self):
|
||
|
|
i = self.s.difference(self.items2)
|
||
|
|
self.assertEqual(self.s - set(self.items2), i)
|
||
|
|
self.assertEqual(self.s - frozenset(self.items2), i)
|
||
|
|
|
||
|
|
def test_symmetric_difference(self):
|
||
|
|
i = self.s.symmetric_difference(self.items2)
|
||
|
|
for c in self.letters:
|
||
|
|
self.assertEqual(c in i, (c in self.d) ^ (c in self.items2))
|
||
|
|
self.assertEqual(self.s, WeakSet(self.items))
|
||
|
|
self.assertEqual(type(i), WeakSet)
|
||
|
|
self.assertRaises(TypeError, self.s.symmetric_difference, [[]])
|
||
|
|
|
||
|
|
def test_xor(self):
|
||
|
|
i = self.s.symmetric_difference(self.items2)
|
||
|
|
self.assertEqual(self.s ^ set(self.items2), i)
|
||
|
|
self.assertEqual(self.s ^ frozenset(self.items2), i)
|
||
|
|
|
||
|
|
def test_sub_and_super(self):
|
||
|
|
pl, ql, rl = map(lambda s: [SomeClass(c) for c in s], ['ab', 'abcde', 'def'])
|
||
|
|
p, q, r = map(WeakSet, (pl, ql, rl))
|
||
|
|
self.assertTrue(p < q)
|
||
|
|
self.assertTrue(p <= q)
|
||
|
|
self.assertTrue(q <= q)
|
||
|
|
self.assertTrue(q > p)
|
||
|
|
self.assertTrue(q >= p)
|
||
|
|
self.assertFalse(q < r)
|
||
|
|
self.assertFalse(q <= r)
|
||
|
|
self.assertFalse(q > r)
|
||
|
|
self.assertFalse(q >= r)
|
||
|
|
self.assertTrue(set('a').issubset('abc'))
|
||
|
|
self.assertTrue(set('abc').issuperset('a'))
|
||
|
|
self.assertFalse(set('a').issubset('cbs'))
|
||
|
|
self.assertFalse(set('cbs').issuperset('a'))
|
||
|
|
|
||
|
|
def test_gc(self):
|
||
|
|
# Create a nest of cycles to exercise overall ref count check
|
||
|
|
s = WeakSet(Foo() for i in range(1000))
|
||
|
|
for elem in s:
|
||
|
|
elem.cycle = s
|
||
|
|
elem.sub = elem
|
||
|
|
elem.set = WeakSet([elem])
|
||
|
|
|
||
|
|
def test_subclass_with_custom_hash(self):
|
||
|
|
# Bug #1257731
|
||
|
|
class H(WeakSet):
|
||
|
|
def __hash__(self):
|
||
|
|
return int(id(self) & 0x7fffffff)
|
||
|
|
s=H()
|
||
|
|
f=set()
|
||
|
|
f.add(s)
|
||
|
|
self.assertIn(s, f)
|
||
|
|
f.remove(s)
|
||
|
|
f.add(s)
|
||
|
|
f.discard(s)
|
||
|
|
|
||
|
|
def test_init(self):
|
||
|
|
s = WeakSet()
|
||
|
|
s.__init__(self.items)
|
||
|
|
self.assertEqual(s, self.s)
|
||
|
|
s.__init__(self.items2)
|
||
|
|
self.assertEqual(s, WeakSet(self.items2))
|
||
|
|
self.assertRaises(TypeError, s.__init__, s, 2);
|
||
|
|
self.assertRaises(TypeError, s.__init__, 1);
|
||
|
|
|
||
|
|
def test_constructor_identity(self):
|
||
|
|
s = WeakSet(self.items)
|
||
|
|
t = WeakSet(s)
|
||
|
|
self.assertNotEqual(id(s), id(t))
|
||
|
|
|
||
|
|
def test_hash(self):
|
||
|
|
self.assertRaises(TypeError, hash, self.s)
|
||
|
|
|
||
|
|
def test_clear(self):
|
||
|
|
self.s.clear()
|
||
|
|
self.assertEqual(self.s, WeakSet([]))
|
||
|
|
self.assertEqual(len(self.s), 0)
|
||
|
|
|
||
|
|
def test_copy(self):
|
||
|
|
dup = self.s.copy()
|
||
|
|
self.assertEqual(self.s, dup)
|
||
|
|
self.assertNotEqual(id(self.s), id(dup))
|
||
|
|
|
||
|
|
def test_add(self):
|
||
|
|
x = SomeClass('Q')
|
||
|
|
self.s.add(x)
|
||
|
|
self.assertIn(x, self.s)
|
||
|
|
dup = self.s.copy()
|
||
|
|
self.s.add(x)
|
||
|
|
self.assertEqual(self.s, dup)
|
||
|
|
self.assertRaises(TypeError, self.s.add, [])
|
||
|
|
self.fs.add(Foo())
|
||
|
|
self.assertTrue(len(self.fs) == 1)
|
||
|
|
self.fs.add(self.obj)
|
||
|
|
self.assertTrue(len(self.fs) == 1)
|
||
|
|
|
||
|
|
def test_remove(self):
|
||
|
|
x = SomeClass('a')
|
||
|
|
self.s.remove(x)
|
||
|
|
self.assertNotIn(x, self.s)
|
||
|
|
self.assertRaises(KeyError, self.s.remove, x)
|
||
|
|
self.assertRaises(TypeError, self.s.remove, [])
|
||
|
|
|
||
|
|
def test_discard(self):
|
||
|
|
a, q = SomeClass('a'), SomeClass('Q')
|
||
|
|
self.s.discard(a)
|
||
|
|
self.assertNotIn(a, self.s)
|
||
|
|
self.s.discard(q)
|
||
|
|
self.assertRaises(TypeError, self.s.discard, [])
|
||
|
|
|
||
|
|
def test_pop(self):
|
||
|
|
for i in range(len(self.s)):
|
||
|
|
elem = self.s.pop()
|
||
|
|
self.assertNotIn(elem, self.s)
|
||
|
|
self.assertRaises(KeyError, self.s.pop)
|
||
|
|
|
||
|
|
def test_update(self):
|
||
|
|
retval = self.s.update(self.items2)
|
||
|
|
self.assertEqual(retval, None)
|
||
|
|
for c in (self.items + self.items2):
|
||
|
|
self.assertIn(c, self.s)
|
||
|
|
self.assertRaises(TypeError, self.s.update, [[]])
|
||
|
|
|
||
|
|
def test_update_set(self):
|
||
|
|
self.s.update(set(self.items2))
|
||
|
|
for c in (self.items + self.items2):
|
||
|
|
self.assertIn(c, self.s)
|
||
|
|
|
||
|
|
def test_ior(self):
|
||
|
|
self.s |= set(self.items2)
|
||
|
|
for c in (self.items + self.items2):
|
||
|
|
self.assertIn(c, self.s)
|
||
|
|
|
||
|
|
def test_intersection_update(self):
|
||
|
|
retval = self.s.intersection_update(self.items2)
|
||
|
|
self.assertEqual(retval, None)
|
||
|
|
for c in (self.items + self.items2):
|
||
|
|
if c in self.items2 and c in self.items:
|
||
|
|
self.assertIn(c, self.s)
|
||
|
|
else:
|
||
|
|
self.assertNotIn(c, self.s)
|
||
|
|
self.assertRaises(TypeError, self.s.intersection_update, [[]])
|
||
|
|
|
||
|
|
def test_iand(self):
|
||
|
|
self.s &= set(self.items2)
|
||
|
|
for c in (self.items + self.items2):
|
||
|
|
if c in self.items2 and c in self.items:
|
||
|
|
self.assertIn(c, self.s)
|
||
|
|
else:
|
||
|
|
self.assertNotIn(c, self.s)
|
||
|
|
|
||
|
|
def test_difference_update(self):
|
||
|
|
retval = self.s.difference_update(self.items2)
|
||
|
|
self.assertEqual(retval, None)
|
||
|
|
for c in (self.items + self.items2):
|
||
|
|
if c in self.items and c not in self.items2:
|
||
|
|
self.assertIn(c, self.s)
|
||
|
|
else:
|
||
|
|
self.assertNotIn(c, self.s)
|
||
|
|
self.assertRaises(TypeError, self.s.difference_update, [[]])
|
||
|
|
self.assertRaises(TypeError, self.s.symmetric_difference_update, [[]])
|
||
|
|
|
||
|
|
def test_isub(self):
|
||
|
|
self.s -= set(self.items2)
|
||
|
|
for c in (self.items + self.items2):
|
||
|
|
if c in self.items and c not in self.items2:
|
||
|
|
self.assertIn(c, self.s)
|
||
|
|
else:
|
||
|
|
self.assertNotIn(c, self.s)
|
||
|
|
|
||
|
|
def test_symmetric_difference_update(self):
|
||
|
|
retval = self.s.symmetric_difference_update(self.items2)
|
||
|
|
self.assertEqual(retval, None)
|
||
|
|
for c in (self.items + self.items2):
|
||
|
|
if (c in self.items) ^ (c in self.items2):
|
||
|
|
self.assertIn(c, self.s)
|
||
|
|
else:
|
||
|
|
self.assertNotIn(c, self.s)
|
||
|
|
self.assertRaises(TypeError, self.s.symmetric_difference_update, [[]])
|
||
|
|
|
||
|
|
def test_ixor(self):
|
||
|
|
self.s ^= set(self.items2)
|
||
|
|
for c in (self.items + self.items2):
|
||
|
|
if (c in self.items) ^ (c in self.items2):
|
||
|
|
self.assertIn(c, self.s)
|
||
|
|
else:
|
||
|
|
self.assertNotIn(c, self.s)
|
||
|
|
|
||
|
|
def test_inplace_on_self(self):
|
||
|
|
t = self.s.copy()
|
||
|
|
t |= t
|
||
|
|
self.assertEqual(t, self.s)
|
||
|
|
t &= t
|
||
|
|
self.assertEqual(t, self.s)
|
||
|
|
t -= t
|
||
|
|
self.assertEqual(t, WeakSet())
|
||
|
|
t = self.s.copy()
|
||
|
|
t ^= t
|
||
|
|
self.assertEqual(t, WeakSet())
|
||
|
|
|
||
|
|
def test_eq(self):
|
||
|
|
# issue 5964
|
||
|
|
self.assertTrue(self.s == self.s)
|
||
|
|
self.assertTrue(self.s == WeakSet(self.items))
|
||
|
|
self.assertFalse(self.s == set(self.items))
|
||
|
|
self.assertFalse(self.s == list(self.items))
|
||
|
|
self.assertFalse(self.s == tuple(self.items))
|
||
|
|
self.assertFalse(self.s == 1)
|
||
|
|
|
||
|
|
def test_weak_destroy_while_iterating(self):
|
||
|
|
# Issue #7105: iterators shouldn't crash when a key is implicitly removed
|
||
|
|
# Create new items to be sure no-one else holds a reference
|
||
|
|
items = [SomeClass(c) for c in ('a', 'b', 'c')]
|
||
|
|
s = WeakSet(items)
|
||
|
|
it = iter(s)
|
||
|
|
next(it) # Trigger internal iteration
|
||
|
|
# Destroy an item
|
||
|
|
del items[-1]
|
||
|
|
gc.collect() # just in case
|
||
|
|
# We have removed either the first consumed items, or another one
|
||
|
|
self.assertIn(len(list(it)), [len(items), len(items) - 1])
|
||
|
|
del it
|
||
|
|
# The removal has been committed
|
||
|
|
self.assertEqual(len(s), len(items))
|
||
|
|
|
||
|
|
def test_weak_destroy_and_mutate_while_iterating(self):
|
||
|
|
# Issue #7105: iterators shouldn't crash when a key is implicitly removed
|
||
|
|
items = [SomeClass(c) for c in string.ascii_letters]
|
||
|
|
s = WeakSet(items)
|
||
|
|
@contextlib.contextmanager
|
||
|
|
def testcontext():
|
||
|
|
try:
|
||
|
|
it = iter(s)
|
||
|
|
next(it)
|
||
|
|
# Schedule an item for removal and recreate it
|
||
|
|
u = SomeClass(str(items.pop()))
|
||
|
|
gc.collect() # just in case
|
||
|
|
yield u
|
||
|
|
finally:
|
||
|
|
it = None # should commit all removals
|
||
|
|
|
||
|
|
with testcontext() as u:
|
||
|
|
self.assertNotIn(u, s)
|
||
|
|
with testcontext() as u:
|
||
|
|
self.assertRaises(KeyError, s.remove, u)
|
||
|
|
self.assertNotIn(u, s)
|
||
|
|
with testcontext() as u:
|
||
|
|
s.add(u)
|
||
|
|
self.assertIn(u, s)
|
||
|
|
t = s.copy()
|
||
|
|
with testcontext() as u:
|
||
|
|
s.update(t)
|
||
|
|
self.assertEqual(len(s), len(t))
|
||
|
|
with testcontext() as u:
|
||
|
|
s.clear()
|
||
|
|
self.assertEqual(len(s), 0)
|
||
|
|
|
||
|
|
|
||
|
|
def test_main(verbose=None):
|
||
|
|
test_support.run_unittest(TestWeakSet)
|
||
|
|
|
||
|
|
if __name__ == "__main__":
|
||
|
|
test_main(verbose=True)
|