tests/lockdelay.py

run-tests: make code coverage work on Python 3

This code path was obviously not tested on Python 3 because it
blew up in several places due to str/bytes mismatch.

For internal code, we normalize paths to bytes.

For code calling into `coverage`, we normalize paths to str,
which is what `coverage` seems to expect.

After this, `run-tests.py -H` works on Python 3!

Differential Revision: https://phab.mercurial-scm.org/D7133

# 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