view tests/lockdelay.py @ 51252:fd1aa5e18f75

rust-revlog: using the ad-hoc `NodeTree` in scmutil

Now that we have an independent `NodeTree` class able to work natively
on the pure Rust index, we use it in `mercurial.scmutil`, with automatic
invalidation after mutation of the index.

This code path is tested by `test-revisions.t` and `test-template-functions.t`

# 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