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;;; redisplay-testsuite.el --- Test suite for redisplay.
;; Copyright (C) 2009 Free Software Foundation, Inc.
;; Author: Chong Yidong <cyd@stupidchicken.com>
;; Keywords: internal
;; Human-Keywords: internal
;; 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 <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Type M-x test-redisplay RET to generate the test buffer.
;;; Code:
(defun test-insert-overlay (text &rest props)
(let ((opoint (point))
overlay)
(insert text)
(setq overlay (make-overlay opoint (point)))
(while props
(overlay-put overlay (car props) (cadr props))
(setq props (cddr props)))))
(defun test-redisplay-1 ()
(insert "Test 1: Displaying adjacent and overlapping overlays:\n\n")
(insert " Expected: gnu emacs\n")
(insert " Results: ")
(test-insert-overlay "n" 'before-string "g" 'after-string "u ")
(test-insert-overlay "ma" 'before-string "e" 'after-string "cs")
(insert "\n\n")
(insert " Expected: gnu emacs\n")
(insert " Results: ")
(test-insert-overlay "u" 'before-string "gn")
(test-insert-overlay "ma" 'before-string " e" 'after-string "cs")
(insert "\n\n")
(insert " Expected: gnu emacs\n")
(insert " Results: ")
(test-insert-overlay "XXX" 'display "u "
'before-string "gn" 'after-string "em")
(test-insert-overlay "a" 'after-string "cs")
(insert "\n\n")
(insert " Expected: gnu emacs\n")
(insert " Results: ")
(test-insert-overlay "u " 'before-string "gn" 'after-string "em")
(test-insert-overlay "XXX" 'display "a" 'after-string "cs")
(insert "\n\n"))
(defun test-redisplay-2 ()
(insert "Test 2: Mouse highlighting. Move your mouse over the letters XXX:\n\n")
(insert " Expected: "
(propertize "xxxXXXxxx" 'face 'highlight)
"...---...\n Test: ")
(test-insert-overlay "XXX" 'before-string "xxx" 'after-string "xxx"
'mouse-face 'highlight )
(test-insert-overlay "---" 'before-string "..." 'after-string "...")
(insert "\n\n Expected: "
(propertize "xxxXXX" 'face 'highlight)
"...---...\n Test: ")
(test-insert-overlay "XXX" 'before-string "xxx" 'mouse-face 'highlight)
(test-insert-overlay "---" 'before-string "..." 'after-string "...")
(insert "\n\n Expected: "
(propertize "XXX" 'face 'highlight)
"...---...\n Test: ")
(test-insert-overlay "..." 'display "XXX" 'mouse-face 'highlight)
(test-insert-overlay "---" 'before-string "..." 'after-string "...")
(insert "\n\n Expected: "
(propertize "XXXxxx" 'face 'highlight)
"...\n Test: ")
(test-insert-overlay "..." 'display "XXX" 'after-string "xxx"
'mouse-face 'highlight)
(test-insert-overlay "error" 'display "...")
(insert "\n\n Expected: "
"---..."
(propertize "xxxXXX" 'face 'highlight)
"\n Test: ")
(test-insert-overlay "xxx" 'display "---" 'after-string "...")
(test-insert-overlay "error" 'before-string "xxx" 'display "XXX"
'mouse-face 'highlight)
(insert "\n\n Expected: "
"...---..."
(propertize "xxxXXXxxx" 'face 'highlight)
"\n Test: ")
(test-insert-overlay "---" 'before-string "..." 'after-string "...")
(test-insert-overlay "XXX" 'before-string "xxx" 'after-string "xxx"
'mouse-face 'highlight)
(insert "\n\n Expected: "
"..."
(propertize "XXX" 'face 'highlight)
"...\n Test: ")
(test-insert-overlay "---"
'display (propertize "XXX" 'mouse-face 'highlight)
'before-string "..."
'after-string "...")
(insert "\n\n Expected: "
(propertize "XXX\n" 'face 'highlight)
"\n Test: ")
(test-insert-overlay "XXX\n" 'mouse-face 'highlight)
(insert "\n"))
(defun test-redisplay ()
(interactive)
(pop-to-buffer (generate-new-buffer "*Redisplay Test*"))
(test-redisplay-1)
(test-redisplay-2)
(goto-char (point-min)))
;; arch-tag: fcee53c8-024f-403d-9154-61ae3ce0bfb8
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