[New-bugs-announce] [issue19119] duplicate test name in Lib/test/test_heapq.py
Xavier de Gaye
report at bugs.python.org
Sat Sep 28 22:53:22 CEST 2013
New submission from Xavier de Gaye:
There are two test_get_only methods. The patch provides a partial
fix, but removes the following two lines from the first method as the
execution of these lines fails:
for f in (self.module.nlargest, self.module.nsmallest):
self.assertRaises(TypeError, f, 2, GetOnly())
because heapq.nlargest is stuck in an infinite loop when the sequence
does not have a length. This seems to be a bug in nlargest. See the
following test that runs with 100 % cpu usage.
$ ./python
Python 3.4.0a2+ (default:f6792f734fcc, Sep 28 2013, 17:09:46)
[GCC 4.3.2] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> class GetOnly:
... "Dummy sequence class defining __getitem__ but not __len__."
... def __getitem__(self, ndx):
... return 10
...
>>> import heapq
>>> heapq.nlargest(2, GetOnly())
^CTraceback (most recent call last):
File "<stdin>", line 1, in <module>
File "Lib/heapq.py", line 455, in nlargest
result = _nlargest(n, it)
File "<stdin>", line 3, in __getitem__
KeyboardInterrupt
>>>
----------
components: Library (Lib)
files: duplicate_test_name.patch
keywords: patch
messages: 198550
nosy: rhettinger, stutzbach, xdegaye
priority: normal
severity: normal
status: open
title: duplicate test name in Lib/test/test_heapq.py
type: behavior
versions: Python 3.4
Added file: http://bugs.python.org/file31898/duplicate_test_name.patch
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<http://bugs.python.org/issue19119>
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