view tests/lockdelay.py @ 49681:3f34d800cc69 stable

dirstate: tests racing status with both dirstate-v2 append and rewrite

The way the racing process touches the dirstate results in different challenges
for the raced process.

We now test each variant in the `test-dirstate-status-race.t` tests.

# Dummy extension that adds a delay after acquiring a lock.
#
# This extension can be used to test race conditions between lock acquisition.


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