Example #1
0
 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);
Example #2
0
 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])
Example #3
0
    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)
                it.next()
                # 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)
Example #4
0
class Signal(object):
    def __init__(self):
        self._functions = WeakSet()
        self._methods = WeakKeyDictionary()

    def __call__(self, *args, **kargs):
        # Call handler functions
        for func in self._functions:
            func(*args, **kargs)

        # Call handler methods
        for obj, funcs in self._methods.items():
            for func in funcs:
                func(obj, *args, **kargs)

    def connect(self, slot):
        if inspect.ismethod(slot):
            if slot.__self__ not in self._methods:
                self._methods[slot.__self__] = set()

            self._methods[slot.__self__].add(slot.__func__)

        else:
            self._functions.add(slot)

    def disconnect(self, slot):
        if inspect.ismethod(slot):
            if slot.__self__ in self._methods:
                self._methods[slot.__self__].remove(slot.__func__)
        else:
            if slot in self._functions:
                self._functions.remove(slot)

    def clear(self):
        self._functions.clear()
        self._methods.clear()
Example #5
0
class Signal(object):
    def __init__(self):
        self._functions = WeakSet()
        self._methods = WeakKeyDictionary()

    def __call__(self, *args, **kargs):
        # Call handler functions
        for func in self._functions:
            func(*args, **kargs)

        # Call handler methods
        for obj, funcs in self._methods.items():
            for func in funcs:
                func(obj, *args, **kargs)

    def connect(self, slot):
        if inspect.ismethod(slot):
            if slot.__self__ not in self._methods:
                self._methods[slot.__self__] = set()

            self._methods[slot.__self__].add(slot.__func__)

        else:
            self._functions.add(slot)

    def disconnect(self, slot):
        if inspect.ismethod(slot):
            if slot.__self__ in self._methods:
                self._methods[slot.__self__].remove(slot.__func__)
        else:
            if slot in self._functions:
                self._functions.remove(slot)

    def clear(self):
        self._functions.clear()
        self._methods.clear()
Example #6
0
class TestWeakSet(unittest2.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)
        it.next()             # 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)
                it.next()
                # 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)
Example #7
0
 def __init__(self):
     self._functions = WeakSet()
     self._methods = WeakKeyDictionary()
Example #8
0
 def __init__(self):
     self._functions = WeakSet()
     self._methods = WeakKeyDictionary()