Issue 15246: Improve test coverage for collections.abc.Set. (Contributed by James King).
diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
index 7e14980..a53862a 100644
--- a/Lib/test/test_collections.py
+++ b/Lib/test/test_collections.py
@@ -640,6 +640,59 @@
a, b = OneTwoThreeSet(), OneTwoThreeSet()
self.assertTrue(hash(a) == hash(b))
+ def test_isdisjoint_Set(self):
+ class MySet(Set):
+ def __init__(self, itr):
+ self.contents = itr
+ def __contains__(self, x):
+ return x in self.contents
+ def __iter__(self):
+ return iter(self.contents)
+ def __len__(self):
+ return len([x for x in self.contents])
+ s1 = MySet((1, 2, 3))
+ s2 = MySet((4, 5, 6))
+ s3 = MySet((1, 5, 6))
+ self.assertTrue(s1.isdisjoint(s2))
+ self.assertFalse(s1.isdisjoint(s3))
+
+ def test_equality_Set(self):
+ class MySet(Set):
+ def __init__(self, itr):
+ self.contents = itr
+ def __contains__(self, x):
+ return x in self.contents
+ def __iter__(self):
+ return iter(self.contents)
+ def __len__(self):
+ return len([x for x in self.contents])
+ s1 = MySet((1,))
+ s2 = MySet((1, 2))
+ s3 = MySet((3, 4))
+ s4 = MySet((3, 4))
+ self.assertTrue(s2 > s1)
+ self.assertTrue(s1 < s2)
+ self.assertFalse(s2 <= s1)
+ self.assertFalse(s2 <= s3)
+ self.assertFalse(s1 >= s2)
+ self.assertEqual(s3, s4)
+ self.assertNotEqual(s2, s3)
+
+ def test_arithmetic_Set(self):
+ class MySet(Set):
+ def __init__(self, itr):
+ self.contents = itr
+ def __contains__(self, x):
+ return x in self.contents
+ def __iter__(self):
+ return iter(self.contents)
+ def __len__(self):
+ return len([x for x in self.contents])
+ s1 = MySet((1, 2, 3))
+ s2 = MySet((3, 4, 5))
+ s3 = s1 & s2
+ self.assertEqual(s3, MySet((3,)))
+
def test_MutableSet(self):
self.assertIsInstance(set(), MutableSet)
self.assertTrue(issubclass(set, MutableSet))