view tests/lockdelay.py @ 43899:fff21278554b

rebase: use cmdutil.check_at_most_one_arg() for action

Here we also needed to know what the action was (if any), so I've
updated the helper to return any specified option.

Differential Revision: https://phab.mercurial-scm.org/D7640

# 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