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| | ;;; erc-d-t.el --- ERT helpers for ERC test server -*- lexical-binding: t -*-
;; Copyright (C) 2020-2021 Free Software Foundation, Inc.
;;
;; This file is part of GNU Emacs.
;;
;; This program 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.
;;
;; This program 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 this program. If not, see
;; <https://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
(eval-and-compile (let ((dir (getenv "EMACS_TEST_DIRECTORY")))
(when dir
(load (concat dir "/lisp/erc/erc-d/erc-d-u") nil t))))
(require 'erc-d-u)
(require 'ert)
(defun erc-d-t-kill-related-buffers ()
"Kill all erc- or erc-d- related buffers."
(let (buflist)
(dolist (buf (buffer-list))
(with-current-buffer buf
(when (or erc-d-u--process-buffer
(derived-mode-p 'erc-mode))
(push buf buflist))))
(dolist (buf buflist)
(when (and (boundp 'erc-server-flood-timer)
(timerp erc-server-flood-timer))
(cancel-timer erc-server-flood-timer))
(when-let ((proc (get-buffer-process buf)))
(delete-process proc))
(when (buffer-live-p buf)
(kill-buffer buf))))
(while (when-let ((buf (pop erc-d-u--canned-buffers)))
(kill-buffer buf))))
(defun erc-d-t-silence-around (orig &rest args)
"Run ORIG function with ARGS silently.
Use this on `erc-handle-login' and `erc-server-connect'."
(let ((inhibit-message t))
(apply orig args)))
(defvar erc-d-t-cleanup-sleep-secs 0.1)
(defmacro erc-d-t-with-cleanup (bindings cleanup &rest body)
"Execute BODY and run CLEANUP form regardless of outcome.
`let*'-bind BINDINGS and make them available in BODY and CLEANUP.
After CLEANUP, destroy any values in BINDINGS that remain bound to
buffers or processes. Sleep `erc-d-t-cleanup-sleep-secs' before
returning."
(declare (indent 2))
`(let* ,bindings
(unwind-protect
(progn ,@body)
,cleanup
(when noninteractive
(let (bufs procs)
(dolist (o (list ,@(mapcar (lambda (b) (or (car-safe b) b))
bindings)))
(when (bufferp o)
(push o bufs))
(when (processp o)
(push o procs)))
(dolist (proc procs)
(delete-process proc)
(when-let ((buf (process-buffer proc)))
(push buf bufs)))
(dolist (buf bufs)
(when-let ((proc (get-buffer-process buf)))
(delete-process proc))
(when (bufferp buf)
(ignore-errors (kill-buffer buf)))))
(sleep-for erc-d-t-cleanup-sleep-secs)))))
(defmacro erc-d-t-wait-for (max-secs msg &rest body)
"Wait for BODY to become non-nil.
Or signal error with MSG after MAX-SECS. When MAX-SECS is negative,
signal if BODY returns nil but not if MAX-SECS elapses. On success,
return BODY's value.
Note: this assumes BODY is waiting on a peer's output. It tends to
artificially accelerate consumption of all process output, which may not
be desirable."
(declare (indent 2))
(let ((inverted (make-symbol "inverted"))
(time-out (make-symbol "time-out"))
(result (make-symbol "result")))
`(ert-info ((concat "Awaiting: " ,msg))
(let ((,time-out (abs ,max-secs))
(,inverted (< ,max-secs 0))
(,result ',result))
(with-timeout (,time-out (if ,inverted
(setq ,inverted nil)
(error "Failed awaiting: %s" ,msg)))
(while (not (setq ,result (progn ,@body)))
(when (and (accept-process-output nil 0.1) (not noninteractive))
(redisplay))))
(when ,inverted
(error "Failed awaiting: %s" ,msg))
,result))))
(defvar erc-d-t-use-regeexp-when-searching nil)
(defun erc-d-t-search-for (time-out text &optional starting-from)
"Wait for TEXT to appear in current buffer before TIME-OUT secs.
With marker or number STARTING-FROM, only look forward from there. When
`erc-d-t-use-regeexp-when-searching' is non-nil, TEXT can be a regular
expression."
(save-restriction
(widen)
(erc-d-t-wait-for time-out (format "string: %s" text)
(goto-char (or starting-from (point-min)))
(funcall (if erc-d-t-use-regeexp-when-searching
#'search-forward-regexp
#'search-forward)
text nil t))))
(defun erc-d-t-make-expecter ()
"Return function to search for new output in buffer.
The returned function works like `erc-d-t-search-for', but it never
revisits previously covered territory. To use a regexp, ensure
`erc-d-t-use-regeexp-when-searching' is non-nil during the actual
search. To reset the marker position, pass it as STARTING-FROM."
(let (positions)
(lambda (time-out text &optional starting-from)
(save-restriction
(widen)
(let ((pos (cdr (assq (current-buffer) positions))))
(when starting-from
(set-marker pos starting-from))
(when (and text time-out)
(erc-d-t-wait-for time-out (format "string: %s" text)
(goto-char (or pos (point-min)))
(when (funcall (if erc-d-t-use-regeexp-when-searching
#'search-forward-regexp
#'search-forward)
text nil t)
(unless pos
(push (cons (current-buffer) (setq pos (make-marker)))
positions))
(marker-position
(set-marker pos (min (point) (1- (point-max)))))))))))))
(provide 'erc-d-t)
;;; erc-d-t.el ends here
|