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;;; erc-scenarios-base-reconnect.el --- Base-reconnect scenarios -*- lexical-binding: t -*-
;; Copyright (C) 2022-2025 Free Software Foundation, Inc.
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Code:
(require 'ert-x)
(eval-and-compile
(let ((load-path (cons (ert-resource-directory) load-path)))
(require 'erc-scenarios-common)))
(eval-when-compile (require 'erc-join))
;; This ensures we only reconnect `erc-server-reconnect-attempts'
;; (rather than infinitely many) times, which can easily happen when
;; tweaking code related to process sentinels in erc-backend.el.
(ert-deftest erc-scenarios-base-reconnect-timer ()
:tags '(:expensive-test)
(erc-scenarios-common-with-cleanup
((erc-scenarios-common-dialog "base/reconnect")
(dumb-server (erc-d-run "localhost" t 'timer 'timer 'timer-last))
(port (process-contact dumb-server :service))
(expect (erc-d-t-make-expecter))
(erc-server-auto-reconnect t)
erc-autojoin-channels-alist
erc-server-buffer)
(ert-info ("Connect to foonet")
(setq erc-server-buffer (erc :server "127.0.0.1"
:port port
:nick "tester"
:password "changeme"
:full-name "tester"))
(with-current-buffer erc-server-buffer
(should (string= (buffer-name) (format "127.0.0.1:%d" port)))))
(ert-info ("Server tries to connect thrice (including initial attempt)")
(with-current-buffer erc-server-buffer
(dotimes (n 3)
(ert-info ((format "Attempt %d" n))
(funcall expect 3 "Opening connection")
(funcall expect 2 "Password incorrect")
(funcall expect 2 "Connection failed!")
(funcall expect 2 "Re-establishing connection")))
(ert-info ("Prev attempt was final")
(erc-d-t-absent-for 1 "Opening connection" (point)))))
(ert-info ("Server buffer is unique and temp name is absent")
(should (equal (list (get-buffer (format "127.0.0.1:%d" port)))
(erc-scenarios-common-buflist "127.0.0.1"))))))
;; Upon reconnecting, playback for channel and target buffers is
;; routed correctly. Autojoin is irrelevant here, but for the
;; skeptical, see `erc-scenarios-common--join-network-id', which
;; overlaps with this and includes spurious JOINs ignored by the
;; server.
(ert-deftest erc-scenarios-base-association-reconnect-playback ()
:tags '(:expensive-test)
(erc-scenarios-common-with-cleanup
((erc-scenarios-common-dialog "base/assoc/reconplay")
(erc-server-flood-penalty 0.1)
(erc-server-flood-margin 30)
(dumb-server (erc-d-run "localhost" t 'foonet 'again))
(port (process-contact dumb-server :service))
(expect (erc-d-t-make-expecter))
erc-autojoin-channels-alist
erc-server-buffer-foo)
(ert-info ("Connect to foonet")
(setq erc-server-buffer-foo (erc :server "127.0.0.1"
:port port
:nick "tester"
:password "changeme"
:full-name "tester"))
(with-current-buffer erc-server-buffer-foo
(should (string= (buffer-name) (format "127.0.0.1:%d" port)))))
(ert-info ("Setup")
(ert-info ("Server buffer is unique and temp name is absent")
(erc-d-t-wait-for 3 (get-buffer "foonet"))
(should-not (erc-scenarios-common-buflist "127.0.0.1")))
(ert-info ("Channel buffer #chan playback received")
(with-current-buffer (erc-d-t-wait-for 8 (get-buffer "#chan"))
(funcall expect 10 "But purgatory")))
(ert-info ("Ask for help from services or bouncer bot")
(with-current-buffer erc-server-buffer-foo
(erc-cmd-MSG "*status help")))
(ert-info ("Help received")
(with-current-buffer (erc-d-t-wait-for 5 (get-buffer "*status"))
(funcall expect 10 "Rehash")))
(ert-info ("#chan convo done")
(with-current-buffer "#chan"
(funcall expect 10 "most egregious indignity"))))
;; KLUDGE (see note above test)
(should erc-autojoin-channels-alist)
(setq erc-autojoin-channels-alist nil)
(with-current-buffer erc-server-buffer-foo
(erc-cmd-QUIT "")
(erc-d-t-wait-for 4 (not (erc-server-process-alive)))
(erc-cmd-RECONNECT))
(ert-info ("Channel buffer found and associated")
(with-current-buffer "#chan"
(funcall expect 10 "Wilt thou rest damned")))
(ert-info ("Help buffer found and associated")
(with-current-buffer "*status"
(erc-scenarios-common-say "help")
(funcall expect 10 "Restart ZNC")))
(ert-info ("#chan convo done")
(with-current-buffer "#chan"
(funcall expect 10 "here comes the lady")))))
(ert-deftest erc-scenarios-base-cancel-reconnect ()
:tags '(:expensive-test)
(erc-scenarios-common-with-cleanup
((erc-scenarios-common-dialog "base/reconnect")
(dumb-server (erc-d-run "localhost" t 'timer 'timer 'timer-last))
(port (process-contact dumb-server :service))
(expect (erc-d-t-make-expecter))
(erc-server-auto-reconnect t)
erc-autojoin-channels-alist
erc-server-buffer)
(ert-info ("Connect to foonet")
(setq erc-server-buffer (erc :server "127.0.0.1"
:port port
:nick "tester"
:password "changeme"
:full-name "tester"))
(with-current-buffer erc-server-buffer
(should (string= (buffer-name) (format "127.0.0.1:%d" port)))))
(ert-info ("Two connection attempts, all stymied")
(with-current-buffer erc-server-buffer
(ert-info ("First two attempts behave normally")
(dotimes (n 2)
(ert-info ((format "Initial attempt %d" (1+ n)))
(funcall expect 3 "Opening connection")
(funcall expect 2 "Password incorrect")
(funcall expect 2 "Connection failed!")
(funcall expect 2 "Re-establishing connection"))))
(ert-info ("/RECONNECT cancels timer but still attempts to connect")
(erc-cmd-RECONNECT)
(funcall expect 2 "Canceled")
(funcall expect 3 "Opening connection")
(funcall expect 2 "Password incorrect")
(funcall expect 10 "Connection failed!")
(funcall expect 2 "Re-establishing connection"))
(ert-info ("Explicitly cancel timer")
(erc-cmd-RECONNECT "cancel")
(funcall expect 2 "Canceled")
(erc-d-t-absent-for 1 "Opening connection" (point)))))
(ert-info ("Server buffer is unique and temp name is absent")
(should (equal (list (get-buffer (format "127.0.0.1:%d" port)))
(erc-scenarios-common-buflist "127.0.0.1"))))))
;;; erc-scenarios-base-reconnect.el ends here
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