tests/e2e/legacy_protocols.py boots the debug binary in a container, turns
the switch off and on, and checks the ports themselves. Everything below it
was unit-tested and none of it could have told us this worked.
What it establishes: IMAP and POP3 stop answering while inbound SMTP,
submission and JMAP keep going (LP-1, LP-2, LP-3); the listeners are saved
whole (LP-1); a restart does not reopen them, which is the point of taking
the objects away rather than only the sockets; both come back on their own
without a restart (LP-5); savedListeners empties; and asking to close
submission is overruled to false and reported, with 465 still answering
(LP-21, acceptance test 18). wouldClose named imaps, pop3s and sieve, and
those were exactly the three that closed (LP-16).
One caveat about the method, because it nearly produced a false pass in
reverse. A published Docker port accepts connections whether or not
anything is listening in the container, so connecting proves nothing. The
first run of this script reported IMAP still open after the switch, and
that was the script being wrong, not the server. Each port now has to
speak: a TLS handshake on 993, 995 and 465, a greeting on 25.
It lives under tests/ because target/ is ignored and this is worth keeping.
It derives its own root, needs Docker and a debug build, and clears its
state directory first -- a half-bootstrapped one from an earlier run is no
longer in bootstrap mode and the recovery admin stops working.
jcoffey-dev
b73aa13fa3