py3: introduce pycompat.ziplist as zip is a generator on Python 3
Similar to map, the return value of zip was also turned into a generator on
Python 3. We have multiple occurences in our codebase where we retrieve the
values of zip multiple times, so let's introduce pycompat.ziplist similar to
pycompat.maplist.
Differential Revision: https://phab.mercurial-scm.org/D1675
# 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