view tests/lockdelay.py @ 44399:a45ffad9ae98

merge: introduce a merge() for that use-case

In the same vein as some earlier patches like f546d2170b0f (merge:
introduce a clean_update() for that use-case, 2020-01-15).

Differential Revision: https://phab.mercurial-scm.org/D8168

# 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