annotate tests/lockdelay.py @ 44719:c482e2fe444c

phabricator: prevent posting obsolete commits

I don't see why this would be useful in the first place.  But I had a coworker
submit a single commit that was not a branch head, and the result was to orphan
its child and keep the original commit visible.  He then did up arrow + Enter,
and it happily created a new review (since the URL isn't amended into the
original commit specified on the command line) and a new successor, resulting in
a local divergence.  I'd like to fix the issue with creating orphans, but this
is simple enough to prevent on its own.

Differential Revision: https://phab.mercurial-scm.org/D8437

# Dummy extension that adds a delay after acquiring a lock.
#
# This extension can be used to test race conditions between lock acquisition.

from __future__ import absolute_import

import os
import time


def reposetup(ui, repo):
    class delayedlockrepo(repo.__class__):
        def lock(self):
            delay = float(os.environ.get('HGPRELOCKDELAY', '0.0'))
            if delay:
                time.sleep(delay)
            res = super(delayedlockrepo, self).lock()
            delay = float(os.environ.get('HGPOSTLOCKDELAY', '0.0'))
            if delay:
                time.sleep(delay)
            return res

    repo.__class__ = delayedlockrepo