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Issue #16148: implemented PEP 424

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This commit is contained in:
Armin Ronacher 2012-10-06 14:03:24 +02:00
parent ef08fb1f04
commit aa9a79d279
14 changed files with 161 additions and 82 deletions
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25
Lib/test/test_operator.py
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@ -410,6 +410,31 @@ class OperatorTestCase(unittest.TestCase):
self.assertEqual(operator.__ixor__ (c, 5), "ixor")
self.assertEqual(operator.__iconcat__ (c, c), "iadd")
def test_length_hint(self):
class X(object):
def __init__(self, value):
self.value = value
def __length_hint__(self):
if type(self.value) is type:
raise self.value
else:
return self.value
self.assertEqual(operator.length_hint([], 2), 0)
self.assertEqual(operator.length_hint(iter([1, 2, 3])), 3)
self.assertEqual(operator.length_hint(X(2)), 2)
self.assertEqual(operator.length_hint(X(NotImplemented), 4), 4)
self.assertEqual(operator.length_hint(X(TypeError), 12), 12)
with self.assertRaises(TypeError):
operator.length_hint(X("abc"))
with self.assertRaises(ValueError):
operator.length_hint(X(-2))
with self.assertRaises(LookupError):
operator.length_hint(X(LookupError))
def test_main(verbose=None):
import sys
test_classes = (