diff options
Diffstat (limited to 'Lib/test')
| -rw-r--r-- | Lib/test/seq_tests.py | 27 | ||||
| -rw-r--r-- | Lib/test/test_richcmp.py | 4 |
2 files changed, 29 insertions, 2 deletions
diff --git a/Lib/test/seq_tests.py b/Lib/test/seq_tests.py index 89996a3..ae5bba3 100644 --- a/Lib/test/seq_tests.py +++ b/Lib/test/seq_tests.py @@ -207,6 +207,33 @@ class CommonTest(unittest.TestCase): self.assertRaises(TypeError, u.__contains__) + def test_contains_fake(self): + class AllEq: + # Sequences must use rich comparison against each item + # (unless "is" is true, or an earlier item answered) + # So instances of AllEq must be found in all non-empty sequences. + def __eq__(self, other): + return True + def __hash__(self): + raise NotImplemented + self.assert_(AllEq() not in self.type2test([])) + self.assert_(AllEq() in self.type2test([1])) + + def test_contains_order(self): + # Sequences must test in-order. If a rich comparison has side + # effects, these will be visible to tests against later members. + # In this test, the "side effect" is a short-circuiting raise. + class DoNotTestEq(Exception): + pass + class StopCompares: + def __eq__(self, other): + raise DoNotTestEq + + checkfirst = self.type2test([1, StopCompares()]) + self.assert_(1 in checkfirst) + checklast = self.type2test([StopCompares(), 1]) + self.assertRaises(DoNotTestEq, checklast.__contains__, 1) + def test_len(self): self.assertEqual(len(self.type2test()), 0) self.assertEqual(len(self.type2test([])), 0) diff --git a/Lib/test/test_richcmp.py b/Lib/test/test_richcmp.py index 006b152..687298d 100644 --- a/Lib/test/test_richcmp.py +++ b/Lib/test/test_richcmp.py @@ -259,8 +259,8 @@ class DictTest(unittest.TestCase): def test_dicts(self): # Verify that __eq__ and __ne__ work for dicts even if the keys and - # values don't support anything other than __eq__ and __ne__. Complex - # numbers are a fine example of that. + # values don't support anything other than __eq__ and __ne__ (and + # __hash__). Complex numbers are a fine example of that. import random imag1a = {} for i in range(50): |