view tests/lockdelay.py @ 36083:04984f2e50ae

py3: use email parser that operates on bytes

email.parser.Parser() operates on str in both Python 2 and 3.
Python 3.2 introduced the email.parser.BytesParser(), which works
like Parser except it accepts bytes.

We implement the pycompat helper as a function so we lazily
import the "email" module.

Differential Revision: https://phab.mercurial-scm.org/D2147

# 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