view tests/lockdelay.py @ 45198:e2ec36167151

templater: simplify templatepaths() to avoid iterating a singleton list

The function iterates over a hard-coded list of one element since
d844e220792a (templater: don't search randomly for templates - trust
util.datapath, 2014-09-28).

Differential Revision: https://phab.mercurial-scm.org/D8785

# 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