tests: add tests and document expectations from visit_children_set in rust
The tests this patch are adding have the form of formal spec in
invariants::visit_children_set::holds,
and then a series of checks that all examples must satisfy this
formal spec.
I tried to make the spec consistent with how this function is used
and how it was originally conceived. This is in conflict with how it's
documented in Rust. Some of the implementations also fail to implement
this spec, which leads to bugs, in particular when complicated patterns
are used with `hg status`.
#!/usr/bin/env python
"""dummy SMTP server for use in tests"""
import optparse
import os
import socket
import ssl
import sys
from mercurial import (
pycompat,
server,
sslutil,
ui as uimod,
)
if os.environ.get('HGIPV6', '0') == '1':
family = socket.AF_INET6
else:
family = socket.AF_INET
def log(msg):
sys.stdout.write(msg)
sys.stdout.flush()
def mocksmtpserversession(conn, addr):
conn.send(b'220 smtp.example.com ESMTP\r\n')
line = conn.recv(1024)
if not line.lower().startswith(b'ehlo '):
log('no hello: %s\n' % line)
return
conn.send(b'250 Hello\r\n')
line = conn.recv(1024)
if not line.lower().startswith(b'mail from:'):
log('no mail from: %s\n' % line)
return
mailfrom = line[10:].decode().rstrip()
if mailfrom.startswith('<') and mailfrom.endswith('>'):
mailfrom = mailfrom[1:-1]
conn.send(b'250 Ok\r\n')
rcpttos = []
while True:
line = conn.recv(1024)
if not line.lower().startswith(b'rcpt to:'):
break
rcptto = line[8:].decode().rstrip()
if rcptto.startswith('<') and rcptto.endswith('>'):
rcptto = rcptto[1:-1]
rcpttos.append(rcptto)
conn.send(b'250 Ok\r\n')
if not line.lower().strip() == b'data':
log('no rcpt to or data: %s' % line)
conn.send(b'354 Go ahead\r\n')
data = b''
while True:
line = conn.recv(1024)
if not line:
log('connection closed before end of data')
break
data += line
if data.endswith(b'\r\n.\r\n'):
data = data[:-5]
break
conn.send(b'250 Ok\r\n')
log(
'%s from=%s to=%s\n%s\n'
% (addr[0], mailfrom, ', '.join(rcpttos), data.decode())
)
def run(host, port, certificate):
ui = uimod.ui.load()
with socket.socket(family, socket.SOCK_STREAM) as s:
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
s.bind((host, port))
# log('listening at %s:%d\n' % (host, port))
s.listen(1)
try:
while True:
conn, addr = s.accept()
if certificate:
try:
conn = sslutil.wrapserversocket(
conn, ui, certfile=certificate
)
except ssl.SSLError as e:
log('%s ssl error: %s\n' % (addr[0], e))
conn.close()
continue
log("connection from %s:%s\n" % addr)
mocksmtpserversession(conn, addr)
conn.close()
except KeyboardInterrupt:
pass
def _encodestrsonly(v):
if isinstance(v, type(u'')):
return v.encode('ascii')
return v
def bytesvars(obj):
unidict = vars(obj)
bd = {k.encode('ascii'): _encodestrsonly(v) for k, v in unidict.items()}
if bd[b'daemon_postexec'] is not None:
bd[b'daemon_postexec'] = [
_encodestrsonly(v) for v in bd[b'daemon_postexec']
]
return bd
def main():
op = optparse.OptionParser()
op.add_option('-d', '--daemon', action='store_true')
op.add_option('--daemon-postexec', action='append')
op.add_option('-p', '--port', type=int, default=8025)
op.add_option('-a', '--address', default='localhost')
op.add_option('--pid-file', metavar='FILE')
op.add_option('--tls', choices=['none', 'smtps'], default='none')
op.add_option('--certificate', metavar='FILE')
op.add_option('--logfile', metavar='FILE')
opts, args = op.parse_args()
if (opts.tls == 'smtps') != bool(opts.certificate):
op.error('--certificate must be specified with --tls=smtps')
server.runservice(
bytesvars(opts),
runfn=lambda: run(opts.address, opts.port, opts.certificate),
runargs=[pycompat.sysexecutable, pycompat.fsencode(__file__)]
+ pycompat.sysargv[1:],
logfile=opts.logfile,
)
if __name__ == '__main__':
main()