Fix some set algebra methods of WeakSet objects.
diff --git a/Lib/test/test_weakset.py b/Lib/test/test_weakset.py
index f981bdd..1f82a7d 100644
--- a/Lib/test/test_weakset.py
+++ b/Lib/test/test_weakset.py
@@ -83,6 +83,11 @@
x = WeakSet(self.items + self.items2)
c = C(self.items2)
self.assertEqual(self.s.union(c), x)
+ del c
+ self.assertEqual(len(u), len(self.items) + len(self.items2))
+ self.items2.pop()
+ gc.collect()
+ self.assertEqual(len(u), len(self.items) + len(self.items2))
def test_or(self):
i = self.s.union(self.items2)
@@ -90,14 +95,19 @@
self.assertEqual(self.s | frozenset(self.items2), i)
def test_intersection(self):
- i = self.s.intersection(self.items2)
+ s = WeakSet(self.letters)
+ i = 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(c in i, c in self.items2 and c in self.letters)
+ self.assertEqual(s, WeakSet(self.letters))
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)
+ self.assertEqual(i.intersection(C(self.items)), x)
+ self.assertEqual(len(i), len(self.items2))
+ self.items2.pop()
+ gc.collect()
+ self.assertEqual(len(i), len(self.items2))
def test_isdisjoint(self):
self.assertTrue(self.s.isdisjoint(WeakSet(self.items2)))
@@ -128,6 +138,10 @@
self.assertEqual(self.s, WeakSet(self.items))
self.assertEqual(type(i), WeakSet)
self.assertRaises(TypeError, self.s.symmetric_difference, [[]])
+ self.assertEqual(len(i), len(self.items) + len(self.items2))
+ self.items2.pop()
+ gc.collect()
+ self.assertEqual(len(i), len(self.items) + len(self.items2))
def test_xor(self):
i = self.s.symmetric_difference(self.items2)