On Python 2, the addition of Lib/test/bisect.py caused conflict with Lib/bisect.py when running the Python test suite :-( I chose to rename Lib/test/bisect.py to Lib/test/bisectcmd.py to reduce changes caused by this new debug tool. So only in Python 2.7, you have to run:
./python -m test.bisectcmd ... instead of ./python -m tes.bisect ... See http://bugs.python.org/issue30843 for more information. Victor 2017-06-16 18:05 GMT+02:00 Victor Stinner <victor.stin...@gmail.com>: > Hi, > > Last weeks, I worked on a new tool to bisect failing tests because > it's painful to bisect manually reference leaks (I remove as much code > as possible until the code is small enough to be reviewable manually). > > See the bisect_test.py script attached to this issue: > http://bugs.python.org/issue29512 > > With the help of Louie Lu, I added new --list-cases option to "python > -m test", so you can now list all test cases and write it into a text > file: > > ./python -m test --list-cases test_os > tests > > I also added a new --matchfile option, to filter tests using a text > file which contains one pattern per line: > > ./python -m test --matchfile=tests test_os > > fnmatch is used to match test names, so "*" joker character can be > used in test names. > > > My bisection tool takes a text file with the --matchfile format (one > pattern per line) and creates a random subset of tests with half of > the tests. If tests still fail, use the subset. Otherwise, create a > new random subset. Loop until the subset contains a single test > (configurable threshold, -n command line option). > > The long term plan is to integrate the bisection feature directly into > regrtest. > > > > Right now, my script is hardcoded to bisect reference leak bugs, but > it should be easy to modify it to bisect other test issues like test > creating files without removing it ("ENV_CHANGED" failure in > regrtest). > > For example, a core file is dumped when running test_subprocess on > FreeBSD buildbots: > > http://bugs.python.org/issue30448 > > But I'm unable to reproduce the issue on my FreeBSD. It would be nice > to be able to automate the bisection on the buildbot directly. > > > --list-cases and --matchfile options are now available in 2.7, 3.5, > 3.6 and master (3.7) branches. > > TODO: doctest tests are only partially supported, see: > > http://bugs.python.org/issue30683 > > Victor _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
