Commit Graph

48 Commits

Author SHA1 Message Date
Brett Cannon f5bee30e30 Fix crasher for when an object's __del__ creates a new weakref to itself.
Patch only fixes new-style classes; classic classes still buggy.

Closes bug #1377858.  Already backported.
2007-01-23 23:21:22 +00:00
Walter Dörwald da1ad32cec Fix typo. 2006-12-12 21:55:31 +00:00
Armin Rigo a3f092751a ("Forward-port" of r46506)
Remove various dependencies on dictionary order in the standard library
tests, and one (clearly an oversight, potentially critical) in the
standard library itself - base64.py.

Remaining open issues:
 * test_extcall is an output test, messy to make robust
 * tarfile.py has a potential bug here, but I'm not familiar
   enough with this code.  Filed in as SF bug #1496501.
 * urllib2.HTTPPasswordMgr() returns a random result if there is more
   than one matching root path.  I'm asking python-dev for
   clarification...
2006-05-28 19:13:17 +00:00
Fred Drake 017e68c413 SF #1479988: add methods to allow access to weakrefs for the
weakref.WeakKeyDictionary and weakref.WeakValueDictionary
2006-05-02 06:53:59 +00:00
Georg Brandl 9a65d583ac Add doctest for examples in libweakref.tex to test_weakref. 2005-07-02 19:07:30 +00:00
Raymond Hettinger e6c470f255 SF bug #1770766: weakref proxy has incorrect __nonzero__ behavior. 2005-03-27 03:04:54 +00:00
Neal Norwitz bdcb9410c2 SF bug #978308, Spurious errors taking bool of dead pro
Need to return -1 on error.

Needs backport.
2004-07-08 01:22:31 +00:00
Fred Drake 0a4dd390bf Make weak references subclassable:
- weakref.ref and weakref.ReferenceType will become aliases for each
  other

- weakref.ref will be a modern, new-style class with proper __new__
  and __init__ methods

- weakref.WeakValueDictionary will have a lighter memory footprint,
  using a new weakref.ref subclass to associate the key with the
  value, allowing us to have only a single object of overhead for each
  dictionary entry (currently, there are 3 objects of overhead per
  entry: a weakref to the value, a weakref to the dictionary, and a
  function object used as a weakref callback; the weakref to the
  dictionary could be avoided without this change)

- a new macro, PyWeakref_CheckRefExact(), will be added

- PyWeakref_CheckRef() will check for subclasses of weakref.ref

This closes SF patch #983019.
2004-07-02 18:57:45 +00:00
Walter Dörwald 118f931d07 Rename class attribute containing the class to be tested, so the name is the
same as for the string and sequence tests.
2004-06-02 18:42:25 +00:00
Walter Dörwald 0a6d0ff8d9 Port the dictionary tests from test_types.py to unittest. Collect as much
mapping tests as possible in mapping_test.py and reuse the tests in
test_dict.py, test_userdict.py, test_weakref.py, test_os.py and test_shelve.py.
From SF patch #736962.
2004-05-31 16:29:04 +00:00
Fred Drake 55cf434735 further testing indicates that the simplified version of the test
(re-using an existing test object class) no longer triggered the
original segfault when the fix was backed out; restoring the local
test object class to make the test effective

the assignment of the ref created at the end does not affect the test,
since the segfault happended before weakref.ref() returned; removing
the assignment
2004-02-13 19:21:57 +00:00
Fred Drake 61dafcb6ca use existing test object instead of defining a new class 2004-02-12 19:30:17 +00:00
Walter Dörwald 70a6b49821 Replace backticks with repr() or "%r"
From SF patch #852334.
2004-02-12 17:35:32 +00:00
Fred Drake bc875f5a36 Allocating a new weakref object can cause existing weakref objects for
the same object to be collected by the cyclic GC support if they are
only referenced by a cycle.  If the weakref being collected was one of
the weakrefs without callbacks, some local variables for the
constructor became invalid and have to be re-computed.

The test caused a segfault under a debug build without the fix applied.
2004-02-04 23:14:14 +00:00
Fred Drake ea2adc9c80 - add tests that exercise fixes for the PyWeakref_NewRef() and
PyWeakref_NewProxy() constructors from the C API
- elaborate the getweakrefcount() and getweakrefs() tests slightly
2004-02-03 19:56:46 +00:00
Walter Dörwald b167b04a2e Add tests to test_weakref.py to bring code coverage in _weakref.c up to 100%.
Port test_md5.py to PyUnit.

(Written by Neal Norwitz; from SF patch 736962)

(Backport candidate)
2003-12-11 12:34:05 +00:00
Tim Peters 403a203223 SF bug 839548: Bug in type's GC handling causes segfaults.
Also SF patch 843455.

This is a critical bugfix.
I'll backport to 2.3 maint, but not beyond that.  The bugs this fixes
have been there since weakrefs were introduced.
2003-11-20 21:21:46 +00:00
Raymond Hettinger a690a9967e * Migrate set() and frozenset() from the sandbox.
* Install the unittests, docs, newsitem, include file, and makefile update.
* Exercise the new functions whereever sets.py was being used.

Includes the docs for libfuncs.tex.  Separate docs for the types are
forthcoming.
2003-11-16 16:17:49 +00:00
Tim Peters f7f9e9966b subtype_dealloc(): A more complete fix for critical bug 840829 +
expanded the test case with a piece that needs the more-complete fix.

I'll backport this to 2.3 maint.
2003-11-13 21:59:32 +00:00
Tim Peters add09b4149 SF bug 840829: weakref callbacks and gc corrupt memory.
subtype_dealloc():  This left the dying object exposed to gc, so that
if cyclic gc triggered during the weakref callback, gc tried to delete
the dying object a second time.  That's a disaster.  subtype_dealloc()
had a (I hope!) unique problem here, as every normal dealloc routine
untracks the object (from gc) before fiddling with weakrefs etc.  But
subtype_dealloc has obscure technical reasons for re-registering the
dying object with gc (already explained in a large comment block at
the bottom of the function).

The fix amounts to simply refraining from reregistering the dying object
with gc until after the weakref callback (if any) has been called.

This is a critical bug (hard to predict, and causes seemingly random
memory corruption when it occurs).  I'll backport it to 2.3 later.
2003-11-12 20:43:28 +00:00
Fred Drake f425b1ec42 stylistic nits:
- wrap some long lines
- shorten others
- fix indentation
2003-07-14 21:37:17 +00:00
Raymond Hettinger d693a81595 Fix SF 762891: "del p[key]" on proxy object raises SystemError() 2003-06-30 04:18:48 +00:00
Tim Peters 50d8b8b6ae Fleshed out WeakKeyDictionary.__delitem__ NEWS to cover issues raised on
Python-Dev.  Fixed typos in test comments.  Added some trivial new test
guts to show the parallelism (now) among __delitem__, __setitem__ and
__getitem__ wrt error conditions.

Still a bugfix candidate for 2.2.3 final, but waiting for Fred to get a
chance to chime in.
2003-05-25 17:44:31 +00:00
Tim Peters 886128f4f8 SF 742860: WeakKeyDictionary __delitem__ uses iterkeys
Someone review this, please!  Final releases are getting close, Fred
(the weakref guy) won't be around until Tuesday, and the pre-patch
code can indeed raise spurious RuntimeErrors in the presence of
threads or mutating comparison functions.

See the bug report for my confusions:  I can't see any reason for why
__delitem__ iterated over the keys.  The new one-liner implementation
is much faster, can't raise RuntimeError, and should be better-behaved
in all respects wrt threads.

New tests test_weak_keyed_bad_delitem and
test_weak_keyed_cascading_deletes fail before this patch.

Bugfix candidate for 2.2.3 too, if someone else agrees with this patch.
2003-05-25 01:45:11 +00:00
Raymond Hettinger 91bbd9a7b9 Used sets.Set() to compare unordered sequences.
Improves clarity and brevity.
2003-05-02 09:06:28 +00:00
Walter Dörwald 21d3a32b99 Combine the functionality of test_support.run_unittest()
and test_support.run_classtests() into run_unittest()
and use it wherever possible.

Also don't use "from test.test_support import ...", but
"from test import test_support" in a few spots.

From SF patch #662807.
2003-05-01 17:45:56 +00:00
Raymond Hettinger 2c2d322884 SF patch #667730: More DictMixin
* Adds missing pop() methods to weakref.py
* Expands test suite to broaden coverage of objects with
  a mapping interface.

Contributed by Sebastien Keim.
2003-03-09 07:05:43 +00:00
Guido van Rossum 9eee554bd9 Standardize behavior: no docstrings in test functions. Also use
unittest.makeSuite() rather than loader.loadTestsFromTestCase().
2002-08-22 20:21:30 +00:00
Barry Warsaw 04f357cffe Get rid of relative imports in all unittests. Now anything that
imports e.g. test_support must do so using an absolute package name
such as "import test.test_support" or "from test import test_support".

This also updates the README in Lib/test, and gets rid of the
duplicate data dirctory in Lib/test/data (replaced by
Lib/email/test/data).

Now Tim and Jack can have at it. :)
2002-07-23 19:04:11 +00:00
Guido van Rossum 009afb7c90 SF patch 564549 (Erik Andersén).
The WeakKeyDictionary constructor didn't work when a dict arg was
given.  Fixed by moving a line.  Also adding a unit test.

Bugfix candidate.
2002-06-10 20:00:52 +00:00
Fred Drake 43735da1bf Improve coverage of Objects/weakrefobject.c. 2002-04-11 03:59:42 +00:00
Fred Drake 5935ff07be Add some additional tests that check more proxy behaviors. 2001-12-19 16:54:23 +00:00
Fred Drake 2a64f4693d Regression test for SF bug #478534 -- exceptions could "leak" into a weakref
callback.
2001-12-10 23:46:02 +00:00
Fred Drake 752eda459a Add a regression test for SF bug #478536: If a value cannot be weakly
referenced, WeakKeyDictionary.has_key() should return 0 instead of raising
TypeError.
2001-11-06 16:38:34 +00:00
Fred Drake 3bb4d214a4 Add a test for calling a weakref proxy with a dictionary of keyword args. 2001-10-18 19:28:29 +00:00
Fred Drake 39c27f1ffb Make sure we do not core dump when using proxies with the binary slot
handlers.  This was fixed in Objects/weakrefobject.c 1.2.
2001-10-18 18:06:05 +00:00
Fred Drake 2e2be3760c Change the PyUnit-based tests to use the test_main() approach. This
allows using the tests with unittest.py as a script.  The tests will
still run when run as a script themselves.
2001-09-20 21:33:42 +00:00
Fred Drake ccc7562315 Added tests for key deletion for both Weak*Dictionary flavors.
This covers regression on SF bug #458860.
2001-09-06 14:52:39 +00:00
Fred Drake 4fd06e0170 Make sure that WeakValueDictionary[] raises KeyError instead of TypeError
for keys that are not in the dictionary.
2001-08-03 04:11:27 +00:00
Fred Drake aaa48ff5c9 Extend the weakref test suite to cover the complete mapping interface for
both weakref.Weak*Dictionary classes.

This closes SF bug #416480.
2001-05-10 17:16:38 +00:00
Fred Drake 0e540c391f Added tests for Weak*Dictionary iterator support.
Refactored some object initialization to be more reusable.
2001-05-02 05:44:22 +00:00
Fred Drake a0a4ab1772 Add a test case for Weak*Dictionary.update() that would have caught a
recently reported bug; also exposed some other bugs in the implementation.
2001-04-16 17:37:27 +00:00
Fred Drake 705088e65f Added regression test for SF bug #415660 (failure to invalidate all
references to an object before calling registered callbacks).

Change last uses of verify() to self.assert_().
2001-04-13 17:18:15 +00:00
Fred Drake bf43691ccb Use the WeakKeyDictionary and WeakValueDictionary classes directly
instead of using the mapping() function.
2001-04-10 19:09:35 +00:00
Fred Drake b0fefc5121 Convert the weakref test suite to PyUNIT, and add tests that exercise weak
references on function objects and both bound and unbound methods.
2001-03-23 04:22:45 +00:00
Fred Drake 5c015344a6 Add tests for the .copy() methods of both weak dictionary classes. 2001-03-01 03:06:53 +00:00
Martin v. Löwis 5e1633365d Patch #403985: Add support for weak-keyed dictionaries 2001-02-27 18:36:56 +00:00
Fred Drake 41deb1efc2 PEP 205, Weak References -- initial checkin. 2001-02-01 05:27:45 +00:00