view tests/fsmonitor-run-tests.py @ 47051:de26b9a7ec29 stable

git: consistently use str for parents when rebuilding the index database

The tests show no changes, but when these values are overwritten shortly after
when a git commit object is available, that uses str.  It seems better to use
that for consistency.

It does materially affect the database though, because the old value stored was
`X'3030..3030'` and is now '00..00' when the changelog table is dumped in
sqlite3.  There is one query that specifies the parents, but it passes the non
null hashes as str, so it worked as expected.  That likely explains the lack of
test changes.

Differential Revision: https://phab.mercurial-scm.org/D10527

#!/usr/bin/env python3

# fsmonitor-run-tests.py - Run Mercurial tests with fsmonitor enabled
#
# Copyright 2017 Facebook, Inc.
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
#
# This is a wrapper around run-tests.py that spins up an isolated instance of
# Watchman and runs the Mercurial tests against it. This ensures that the global
# version of Watchman isn't affected by anything this test does.

from __future__ import absolute_import
from __future__ import print_function

import argparse
import contextlib
import json
import os
import shutil
import subprocess
import sys
import tempfile
import uuid

osenvironb = getattr(os, 'environb', os.environ)

if sys.version_info > (3, 5, 0):
    PYTHON3 = True
    xrange = range  # we use xrange in one place, and we'd rather not use range

    def _sys2bytes(p):
        return p.encode('utf-8')


elif sys.version_info >= (3, 0, 0):
    print(
        '%s is only supported on Python 3.5+ and 2.7, not %s'
        % (sys.argv[0], '.'.join(str(v) for v in sys.version_info[:3]))
    )
    sys.exit(70)  # EX_SOFTWARE from `man 3 sysexit`
else:
    PYTHON3 = False

    # In python 2.x, path operations are generally done using
    # bytestrings by default, so we don't have to do any extra
    # fiddling there. We define the wrapper functions anyway just to
    # help keep code consistent between platforms.
    def _sys2bytes(p):
        return p


def getparser():
    """Obtain the argument parser used by the CLI."""
    parser = argparse.ArgumentParser(
        description='Run tests with fsmonitor enabled.',
        epilog='Unrecognized options are passed to run-tests.py.',
    )
    # - keep these sorted
    # - none of these options should conflict with any in run-tests.py
    parser.add_argument(
        '--keep-fsmonitor-tmpdir',
        action='store_true',
        help='keep temporary directory with fsmonitor state',
    )
    parser.add_argument(
        '--watchman',
        help='location of watchman binary (default: watchman in PATH)',
        default='watchman',
    )

    return parser


@contextlib.contextmanager
def watchman(args):
    basedir = tempfile.mkdtemp(prefix='hg-fsmonitor')
    try:
        # Much of this configuration is borrowed from Watchman's test harness.
        cfgfile = os.path.join(basedir, 'config.json')
        # TODO: allow setting a config
        with open(cfgfile, 'w') as f:
            f.write(json.dumps({}))

        logfile = os.path.join(basedir, 'log')
        clilogfile = os.path.join(basedir, 'cli-log')
        if os.name == 'nt':
            sockfile = '\\\\.\\pipe\\watchman-test-%s' % uuid.uuid4().hex
        else:
            sockfile = os.path.join(basedir, 'sock')
        pidfile = os.path.join(basedir, 'pid')
        statefile = os.path.join(basedir, 'state')

        argv = [
            args.watchman,
            '--sockname',
            sockfile,
            '--logfile',
            logfile,
            '--pidfile',
            pidfile,
            '--statefile',
            statefile,
            '--foreground',
            '--log-level=2',  # debug logging for watchman
        ]

        envb = osenvironb.copy()
        envb[b'WATCHMAN_CONFIG_FILE'] = _sys2bytes(cfgfile)
        with open(clilogfile, 'wb') as f:
            proc = subprocess.Popen(
                argv, env=envb, stdin=None, stdout=f, stderr=f
            )
            try:
                yield sockfile
            finally:
                proc.terminate()
                proc.kill()
    finally:
        if args.keep_fsmonitor_tmpdir:
            print('fsmonitor dir available at %s' % basedir)
        else:
            shutil.rmtree(basedir, ignore_errors=True)


def run():
    parser = getparser()
    args, runtestsargv = parser.parse_known_args()

    with watchman(args) as sockfile:
        osenvironb[b'WATCHMAN_SOCK'] = _sys2bytes(sockfile)
        # Indicate to hghave that we're running with fsmonitor enabled.
        osenvironb[b'HGFSMONITOR_TESTS'] = b'1'

        runtestdir = os.path.dirname(__file__)
        runtests = os.path.join(runtestdir, 'run-tests.py')
        blacklist = os.path.join(runtestdir, 'blacklists', 'fsmonitor')

        runtestsargv.insert(0, runtests)
        runtestsargv.extend(
            [
                '--extra-config',
                'extensions.fsmonitor=',
                # specify fsmonitor.mode=paranoid always in order to force
                # fsmonitor extension execute "paranoid" code path
                #
                # TODO: make fsmonitor-run-tests.py accept specific options
                '--extra-config',
                'fsmonitor.mode=paranoid',
                '--blacklist',
                blacklist,
            ]
        )

        return subprocess.call(runtestsargv)


if __name__ == '__main__':
    sys.exit(run())