mirror of
https://github.com/python/cpython.git
synced 2024-12-25 09:44:37 +08:00
05e8be17fd
svn+ssh://pythondev@svn.python.org/python/trunk ........ r60990 | eric.smith | 2008-02-23 17:05:26 +0100 (Sat, 23 Feb 2008) | 1 line Removed duplicate Py_CHARMASK define. It's already defined in Python.h. ........ r60991 | andrew.kuchling | 2008-02-23 17:23:05 +0100 (Sat, 23 Feb 2008) | 4 lines #1330538: Improve comparison of xmlrpclib.DateTime and datetime instances. Remove automatic handling of datetime.date and datetime.time. This breaks backward compatibility, but python-dev discussion was strongly against this automatic conversion; see the bug for a link. ........ r60994 | andrew.kuchling | 2008-02-23 17:39:43 +0100 (Sat, 23 Feb 2008) | 1 line #835521: Add index entries for various pickle-protocol methods and attributes ........ r60995 | andrew.kuchling | 2008-02-23 18:10:46 +0100 (Sat, 23 Feb 2008) | 2 lines #1433694: minidom's .normalize() failed to set .nextSibling for last element. Fix by Malte Helmert ........ r61000 | christian.heimes | 2008-02-23 18:40:11 +0100 (Sat, 23 Feb 2008) | 1 line Patch #2167 from calvin: Remove unused imports ........ r61001 | christian.heimes | 2008-02-23 18:42:31 +0100 (Sat, 23 Feb 2008) | 1 line Patch #1957: syslogmodule: Release GIL when calling syslog(3) ........ r61002 | christian.heimes | 2008-02-23 18:52:07 +0100 (Sat, 23 Feb 2008) | 2 lines Issue #2051 and patch from Alexander Belopolsky: Permission for pyc and pyo files are inherited from the py file. ........
83 lines
2.6 KiB
Python
83 lines
2.6 KiB
Python
from test import test_support, seq_tests
|
|
|
|
class TupleTest(seq_tests.CommonTest):
|
|
type2test = tuple
|
|
|
|
def test_constructors(self):
|
|
super().test_len()
|
|
# calling built-in types without argument must return empty
|
|
self.assertEqual(tuple(), ())
|
|
|
|
def test_truth(self):
|
|
super().test_truth()
|
|
self.assert_(not ())
|
|
self.assert_((42, ))
|
|
|
|
def test_len(self):
|
|
super().test_len()
|
|
self.assertEqual(len(()), 0)
|
|
self.assertEqual(len((0,)), 1)
|
|
self.assertEqual(len((0, 1, 2)), 3)
|
|
|
|
def test_iadd(self):
|
|
super().test_iadd()
|
|
u = (0, 1)
|
|
u2 = u
|
|
u += (2, 3)
|
|
self.assert_(u is not u2)
|
|
|
|
def test_imul(self):
|
|
super().test_imul()
|
|
u = (0, 1)
|
|
u2 = u
|
|
u *= 3
|
|
self.assert_(u is not u2)
|
|
|
|
def test_tupleresizebug(self):
|
|
# Check that a specific bug in _PyTuple_Resize() is squashed.
|
|
def f():
|
|
for i in range(1000):
|
|
yield i
|
|
self.assertEqual(list(tuple(f())), list(range(1000)))
|
|
|
|
def test_hash(self):
|
|
# See SF bug 942952: Weakness in tuple hash
|
|
# The hash should:
|
|
# be non-commutative
|
|
# should spread-out closely spaced values
|
|
# should not exhibit cancellation in tuples like (x,(x,y))
|
|
# should be distinct from element hashes: hash(x)!=hash((x,))
|
|
# This test exercises those cases.
|
|
# For a pure random hash and N=50, the expected number of occupied
|
|
# buckets when tossing 252,600 balls into 2**32 buckets
|
|
# is 252,592.6, or about 7.4 expected collisions. The
|
|
# standard deviation is 2.73. On a box with 64-bit hash
|
|
# codes, no collisions are expected. Here we accept no
|
|
# more than 15 collisions. Any worse and the hash function
|
|
# is sorely suspect.
|
|
|
|
N=50
|
|
base = list(range(N))
|
|
xp = [(i, j) for i in base for j in base]
|
|
inps = base + [(i, j) for i in base for j in xp] + \
|
|
[(i, j) for i in xp for j in base] + xp + list(zip(base))
|
|
collisions = len(inps) - len(set(map(hash, inps)))
|
|
self.assert_(collisions <= 15)
|
|
|
|
def test_repr(self):
|
|
l0 = tuple()
|
|
l2 = (0, 1, 2)
|
|
a0 = self.type2test(l0)
|
|
a2 = self.type2test(l2)
|
|
|
|
self.assertEqual(str(a0), repr(l0))
|
|
self.assertEqual(str(a2), repr(l2))
|
|
self.assertEqual(repr(a0), "()")
|
|
self.assertEqual(repr(a2), "(0, 1, 2)")
|
|
|
|
def test_main():
|
|
test_support.run_unittest(TupleTest)
|
|
|
|
if __name__=="__main__":
|
|
test_main()
|