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| | ;;; erc-fill-tests.el --- Tests for erc-fill -*- lexical-binding:t -*-
;; Copyright (C) 2023 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/>.
;;; Commentary:
;;; Code:
(require 'ert-x)
(require 'erc-fill)
(defun erc-fill-tests--wrap-populate (test)
(let ((proc (start-process "sleep" (current-buffer) "sleep" "1"))
(id (erc-networks--id-create 'foonet))
(erc-insert-modify-hook '(erc-fill erc-add-timestamp))
(erc-server-users (make-hash-table :test 'equal))
(erc-fill-function 'erc-fill-wrap)
(pre-command-hook pre-command-hook)
(erc-modules '(fill stamp))
(msg "Hello World")
(inhibit-message noninteractive)
erc-insert-post-hook
extended-command-history
erc-kill-channel-hook erc-kill-server-hook erc-kill-buffer-hook)
(when (bound-and-true-p erc-button-mode)
(push 'erc-button-add-buttons erc-insert-modify-hook))
(erc-mode)
(setq erc-server-process proc erc-networks--id id)
(set-process-query-on-exit-flag erc-server-process nil)
(with-current-buffer (get-buffer-create "#chan")
(erc-mode)
(erc-munge-invisibility-spec)
(setq erc-server-process proc
erc-networks--id id
erc-channel-users (make-hash-table :test 'equal)
erc--target (erc--target-from-string "#chan")
erc-default-recipients (list "#chan"))
(erc--initialize-markers (point) nil)
(erc-update-channel-member
"#chan" "alice" "alice" t nil nil nil nil nil "fake" "~u" nil nil t)
(erc-update-channel-member
"#chan" "bob" "bob" t nil nil nil nil nil "fake" "~u" nil nil t)
(setq msg "This server is in debug mode and is logging all user I/O.\
If you do not wish for everything you send to be readable\
by the server owner(s), please disconnect.")
(erc-display-message nil 'notice (current-buffer) msg)
(setq msg "bob: come, you are a tedious fool: to the purpose.\
What was done to Elbow's wife, that he hath cause to complain of?\
Come me to what was done to her.")
(erc-display-message nil nil (current-buffer)
(erc-format-privmessage "alice" msg nil t))
;; Introduce an artificial gap in properties `line-prefix' and
;; `wrap-prefix' and later ensure they're not incremented twice.
(save-excursion
(forward-line -1)
(search-forward "? ")
(remove-text-properties (1- (point)) (point)
'(line-prefix t wrap-prefix t)))
(setq msg "alice: Either your unparagoned mistress is dead,\
or she's outprized by a trifle.")
(erc-display-message nil nil (current-buffer)
(erc-format-privmessage "bob" msg nil t))
(let ((original-window-buffer (window-buffer (selected-window))))
(set-window-buffer (selected-window) (current-buffer))
;; Defend against non-local exits from `ert-skip'
(unwind-protect
(funcall test)
(set-window-buffer (selected-window) original-window-buffer)
(when noninteractive
(kill-buffer)))))))
(defun erc-fill-tests--wrap-check-nudge (expected-width)
(save-excursion
(goto-char (point-min))
(should (search-forward "*** This server" nil t))
(should (get-text-property (pos-bol) 'line-prefix))
(should (get-text-property (pos-eol) 'line-prefix))
(should (equal (get-text-property (pos-bol) 'wrap-prefix)
`(space :width ,expected-width)))
(should (equal (get-text-property (pos-eol) 'wrap-prefix)
`(space :width ,expected-width)))
;; Prefix props are applied properly and faces are accounted
;; for when determining widths.
(should (search-forward "<a" nil t))
(should (get-text-property (pos-bol) 'line-prefix))
(should (get-text-property (pos-eol) 'line-prefix))
(should (equal (get-text-property (pos-bol) 'wrap-prefix)
`(space :width ,expected-width)))
(should (equal (get-text-property (pos-eol) 'wrap-prefix)
`(space :width ,expected-width)))
;; The last elt in the `:width' value is a singleton (NUM) when
;; figuring pixels. Otherwise, it's just NUM. See EXPR in the
;; prod rules table under (info "(elisp) Pixel Specification").
(should (pcase (get-text-property (point) 'line-prefix)
((and (guard (fboundp 'string-pixel-width))
`(space :width (- ,n (,w))))
(and (= n expected-width)
(= w (string-pixel-width "<alice> "))))
(`(space :width (- ,n ,w))
(and (= n expected-width)
(= w (length "<alice> "))))))
;; Ensure the loop is not visited twice due to the gap.
(should (search-forward "<b" nil t))
(should (get-text-property (pos-bol) 'line-prefix))
(should (get-text-property (pos-eol) 'line-prefix))
(should (equal (get-text-property (pos-bol) 'wrap-prefix)
`(space :width ,expected-width)))
(should (equal (get-text-property (pos-eol) 'wrap-prefix)
`(space :width ,expected-width)))
(should (pcase (get-text-property (point) 'line-prefix)
((and (guard (fboundp 'string-pixel-width))
`(space :width (- ,n (,w))))
(and (= n expected-width)
(= w (string-pixel-width "<bob> "))))
(`(space :width (- ,n ,w))
(and (= n expected-width)
(= w (length "<bob> "))))))))
(ert-deftest erc-fill-wrap--monospace ()
:tags '(:unstable)
(erc-fill-tests--wrap-populate
(lambda ()
(set-window-buffer (selected-window) (current-buffer))
(erc-fill-tests--wrap-check-nudge 27)
(ert-info ("Shift right by one")
(ert-with-message-capture messages
(execute-kbd-macro (kbd "M-x erc-fill-wrap-nudge RET +"))
(should (string-match (rx "for further adjustment") messages)))
(erc-fill-tests--wrap-check-nudge 29))
(ert-info ("Shift left by five")
(execute-kbd-macro (kbd "M-x erc-fill-wrap-nudge RET -----"))
(erc-fill-tests--wrap-check-nudge 25))
(ert-info ("Reset")
(execute-kbd-macro (kbd "M-x erc-fill-wrap-nudge RET 0"))
(erc-fill-tests--wrap-check-nudge 27)))))
(ert-deftest erc-fill-wrap--variable-pitch ()
:tags '(:unstable)
(unless (and (fboundp 'string-pixel-width)
(not noninteractive)
(display-graphic-p))
(ert-skip "Test needs interactive graphical Emacs"))
(with-selected-frame (make-frame '((name . "other")))
(set-face-attribute 'default (selected-frame)
:family "Sans Serif"
:foundry 'unspecified
:font 'unspecified)
(erc-fill-tests--wrap-populate
(lambda ()
(erc-fill-tests--wrap-check-nudge 27)
(erc-fill--wrap-nudge 2)
(erc-fill-tests--wrap-check-nudge 29)
(erc-fill--wrap-nudge -6)
(erc-fill-tests--wrap-check-nudge 25)
(erc-fill--wrap-nudge 0)
(erc-fill-tests--wrap-check-nudge 27)
;; FIXME get rid of this "void variable `erc--results-ewoc'"
;; error, which seems related to operating in a non-default
;; frame.
;;
;; As a kludge, checking if point made it to the prompt can
;; serve as visual confirmation that the test passed.
(goto-char (point-max))))))
;;; erc-fill-tests.el ends here
|