view tests/bruterebase.py @ 34141:af13097b44dd

tests: split test-revset.t in half

This test has gotten so large that running it can exceed the normal timeout on
systems under load (like if we're running all the tests in parallel). This patch
splits the test cleanly in half.

Differential Revision: https://phab.mercurial-scm.org/D694

# 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 __future__ import absolute_import

from mercurial import (
    error,
    registrar,
    revsetlang,
)

from hgext import rebase

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

@command('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 += "'"
            return result

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

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

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