contrib/python3-ratchet.py
author Georges Racinet <georges.racinet@octobus.net>
Mon, 11 Mar 2024 13:36:25 +0100
branchstable
changeset 51471 5633de951d34
parent 48875 6000f5b25c9b
child 51836 905bc9d0a149
permissions -rw-r--r--
rust-matchers: raw regular expression builder Extracting this `re_builder()` from `re_matcher()` makes it reusable in more general cases than matching `HgPath` instances and would help reducing code duplication in RHGitaly.
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# Copyright 2012 Facebook
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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"""Find tests that newly pass under Python 3.
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The approach is simple: we maintain a whitelist of Python 3 passing
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tests in the repository, and periodically run all the /other/ tests
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and look for new passes. Any newly passing tests get automatically
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added to the whitelist.
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You probably want to run it like this:
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  $ cd tests
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  $ python3 ../contrib/python3-ratchet.py \
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  >   --working-tests=../contrib/python3-whitelist
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"""
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import argparse
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import json
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import os
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import subprocess
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import sys
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_hgenv = dict(os.environ)
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_hgenv.update(
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    {
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        'HGPLAIN': '1',
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    }
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)
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_HG_FIRST_CHANGE = '9117c6561b0bd7792fa13b50d28239d51b78e51f'
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def _runhg(*args):
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    return subprocess.check_output(args, env=_hgenv)
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def _is_hg_repo(path):
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    return (
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        _runhg('hg', 'log', '-R', path, '-r0', '--template={node}').strip()
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        == _HG_FIRST_CHANGE
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    )
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def _py3default():
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    if sys.version_info[0] >= 3:
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        return sys.executable
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    return 'python3'
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def main(argv=()):
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    p = argparse.ArgumentParser()
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    p.add_argument(
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        '--working-tests', help='List of tests that already work in Python 3.'
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    )
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    p.add_argument(
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        '--commit-to-repo',
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        help='If set, commit newly fixed tests to the given repo',
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    )
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    p.add_argument(
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        '-j',
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        default=os.sysconf('SC_NPROCESSORS_ONLN'),
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        type=int,
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        help='Number of parallel tests to run.',
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    )
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    p.add_argument(
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        '--python3',
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        default=_py3default(),
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        help='python3 interpreter to use for test run',
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    )
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    p.add_argument(
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        '--commit-user',
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        default='python3-ratchet@mercurial-scm.org',
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        help='Username to specify when committing to a repo.',
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    )
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    opts = p.parse_args(argv)
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    if opts.commit_to_repo:
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        if not _is_hg_repo(opts.commit_to_repo):
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            print('abort: specified repository is not the hg repository')
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            sys.exit(1)
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    if not opts.working_tests or not os.path.isfile(opts.working_tests):
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        print(
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            'abort: --working-tests must exist and be a file (got %r)'
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            % opts.working_tests
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        )
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        sys.exit(1)
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    elif opts.commit_to_repo:
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        root = _runhg('hg', 'root').strip()
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        if not opts.working_tests.startswith(root):
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            print(
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                'abort: if --commit-to-repo is given, '
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                '--working-tests must be from that repo'
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            )
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            sys.exit(1)
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    try:
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        subprocess.check_call(
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            [
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                opts.python3,
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                '-c',
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                'import sys ; '
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                'assert ((3, 5) <= sys.version_info < (3, 6) '
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                'or sys.version_info >= (3, 6, 2))',
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            ]
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        )
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    except subprocess.CalledProcessError:
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        print(
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            'warning: Python 3.6.0 and 3.6.1 have '
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            'a bug which breaks Mercurial'
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        )
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        print('(see https://bugs.python.org/issue29714 for details)')
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        sys.exit(1)
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    rt = subprocess.Popen(
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        [
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            opts.python3,
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            'run-tests.py',
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            '-j',
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            str(opts.j),
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            '--blacklist',
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            opts.working_tests,
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            '--json',
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        ]
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    )
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    rt.wait()
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    with open('report.json') as f:
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        data = f.read()
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    report = json.loads(data.split('=', 1)[1])
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    newpass = set()
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    for test, result in report.items():
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        if result['result'] != 'success':
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            continue
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        # A new passing test! Huzzah!
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        newpass.add(test)
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    if newpass:
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        # We already validated the repo, so we can just dive right in
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        # and commit.
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        if opts.commit_to_repo:
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            print(len(newpass), 'new passing tests on Python 3!')
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            with open(opts.working_tests) as f:
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                oldpass = {l for l in f.read().splitlines() if l}
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            with open(opts.working_tests, 'w') as f:
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                for p in sorted(oldpass | newpass):
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                    f.write('%s\n' % p)
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            _runhg(
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                'hg',
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                'commit',
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                '-R',
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                opts.commit_to_repo,
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                '--user',
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                opts.commit_user,
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                '--message',
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                'python3: expand list of passing tests',
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            )
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        else:
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            print('Newly passing tests:', '\n'.join(sorted(newpass)))
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            sys.exit(2)
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if __name__ == '__main__':
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    main(sys.argv[1:])