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;;; image-tests.el --- Tests for image.c -*- lexical-binding: t -*-
;; Copyright (C) 2021-2024 Free Software Foundation, Inc.
;; Author: Stefan Kangas <stefankangas@gmail.com>
;; 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)
(declare-function image-size "image.c" (spec &optional pixels frame))
(declare-function image-mask-p "image.c" (spec &optional frame))
(declare-function image-metadata "image.c" (spec &optional frame))
(defconst image-tests--images
`((gif . ,(expand-file-name "test/data/image/black.gif"
source-directory))
(jpeg . ,(expand-file-name "test/data/image/black.jpg"
source-directory))
(pbm . ,(find-image '((:file "splash.svg" :type svg))))
(png . ,(find-image '((:file "splash.png" :type png))))
(svg . ,(find-image '((:file "splash.pbm" :type pbm))))
(tiff . ,(expand-file-name
"nextstep/GNUstep/Emacs.base/Resources/emacs.tiff"
source-directory))
(webp . ,(expand-file-name "test/data/image/black.webp"
source-directory))
(xbm . ,(find-image '((:file "gnus/gnus.xbm" :type xbm))))
(xpm . ,(find-image '((:file "splash.xpm" :type xpm))))))
(ert-deftest image-tests-image-size/error-on-nongraphical-display ()
(skip-unless (not (display-images-p)))
(should-error (image-size 'invalid-spec)))
(ert-deftest image-tests-image-mask-p/error-on-nongraphical-display ()
(skip-unless (not (display-images-p)))
(should-error (image-mask-p (cdr (assq 'xpm image-tests--images)))))
(ert-deftest image-tests-image-metadata/error-on-nongraphical-display ()
(skip-unless (not (display-images-p)))
(should-error (image-metadata (cdr (assq 'xpm image-tests--images)))))
(ert-deftest image-tests-imagemagick-types ()
(skip-unless (fboundp 'imagemagick-types))
(when (fboundp 'imagemagick-types)
(should (listp (imagemagick-types)))))
(ert-deftest image-tests-init-image-library ()
(skip-unless (fboundp 'init-image-library))
(declare-function init-image-library "image.c" (type))
(should (init-image-library 'pbm)) ; built-in
(should-not (init-image-library 'invalid-image-type)))
;;; image-tests.el ends here
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