view tests/bruterebase.py @ 52285:94cf83d9a2c9

sslutil: drop support for Python prior to 3.7

There's also a block of code around line 47 related to `ssl.HAS_TLSv1` to
determine the supported protocols that references "Python 3.7", but I'm not
altering that because the commit referenced there wasn't landed until just prior
to the 3.9 release, and I'm not sure what flavors of py38 might not have a
backport.

Avoid de-indenting for now for a clearer text diff.

# bruterebase.py - brute force rebase testing
#
# Copyright 2017 Facebook, Inc.
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.


from mercurial import (
    error,
    registrar,
    revsetlang,
)

from hgext import rebase

cmdtable = {}
command = registrar.command(cmdtable)


@command(b'debugbruterebase')
def debugbruterebase(ui, repo, source, dest):
    """for every non-empty subset of source, run rebase -r subset -d dest

    Print one line summary for each subset. Assume obsstore is enabled.
    """
    srevs = list(repo.revs(source))

    with repo.wlock(), repo.lock():
        repolen = len(repo)
        cl = repo.changelog

        def getdesc(rev):
            result = cl.changelogrevision(rev).description
            if rev >= repolen:
                result += b"'"
            return result

        for i in range(1, 2 ** len(srevs)):
            subset = [rev for j, rev in enumerate(srevs) if i & (1 << j) != 0]
            spec = revsetlang.formatspec(b'%ld', subset)
            tr = repo.transaction(b'rebase')
            tr._report = lambda x: 0  # hide "transaction abort"

            with ui.silent():
                try:
                    rebase.rebase(ui, repo, dest=dest, rev=[spec])
                except error.Abort as ex:
                    summary = b'ABORT: %s' % ex.message
                except Exception as ex:
                    summary = b'CRASH: %s' % ex
                else:
                    # short summary about new nodes
                    cl = repo.changelog
                    descs = []
                    for rev in range(repolen, len(repo)):
                        desc = b'%s:' % getdesc(rev)
                        for prev in cl.parentrevs(rev):
                            if prev > -1:
                                desc += getdesc(prev)
                        descs.append(desc)
                    descs.sort()
                    summary = b' '.join(descs)
            repo.vfs.tryunlink(b'rebasestate')

            subsetdesc = b''.join(getdesc(rev) for rev in subset)
            ui.write(b'%s: %s\n' % (subsetdesc.rjust(len(srevs)), summary))
            tr.abort()