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#!/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.
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
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())
|
