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Add more identity tests.

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This commit is contained in:
Raymond Hettinger 2003-09-24 03:56:07 +00:00
parent fd95c3a466
commit 3778f40389
1 changed files with 11 additions and 0 deletions
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11
Lib/test/test_sets.py
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@ -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))
#==============================================================================