tests/lockdelay.py

rhg: Skip reading the contents of ambiguous files in some cases

If the size of the file in the working directory does not match the length of
the filelog data, we know its contents will be different and don’t need to
read it.

rhg still decodes the filelog revision, which is not needed in some cases.

Differential Revision: https://phab.mercurial-scm.org/D11910

# 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, wait=True):
            delay = float(os.environ.get('HGPRELOCKDELAY', '0.0'))
            if delay:
                time.sleep(delay)
            res = super(delayedlockrepo, self).lock(wait=wait)
            delay = float(os.environ.get('HGPOSTLOCKDELAY', '0.0'))
            if delay:
                time.sleep(delay)
            return res

    repo.__class__ = delayedlockrepo