diff options
Diffstat (limited to 'Lib/test/test_sets.py')
| -rw-r--r-- | Lib/test/test_sets.py | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Lib/test/test_sets.py b/Lib/test/test_sets.py index 1b26d4c..9cc586f 100644 --- a/Lib/test/test_sets.py +++ b/Lib/test/test_sets.py @@ -732,6 +732,16 @@ class TestIdentities(unittest.TestCase): if a != b: self.assertNotEqual(a-b, b-a) + def test_reflexsive_relations(self): + a, zero = self.a, Set() + self.assertEqual(a ^ a, zero) + self.assertEqual(a - a, zero) + self.assertEqual(a | a, a) + self.assertEqual(a & a, a) + self.assert_(a <= a) + self.assert_(a >= a) + self.assert_(a == a) + def test_summations(self): # check that sums of parts equal the whole a, b = self.a, self.b @@ -756,6 +766,7 @@ class TestIdentities(unittest.TestCase): self.assertEqual(len(b), len(b-a) + len(a&b)) self.assertEqual(len(a^b), len(a-b) + len(b-a)) self.assertEqual(len(a|b), len(a-b) + len(a&b) + len(b-a)) + self.assertEqual(len(a^b) + len(a&b), len(a|b)) #============================================================================== |