tests/lockdelay.py

uncommit: rename the flag 'empty' to 'keep' which retains empty changeset

This patch renames the flag 'empty' which retains the empty changeset if all
the files are uncommitted to 'keep'.

Differential Revision: https://phab.mercurial-scm.org/D726

# 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