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;;; image-tests.el --- tests for image.el -*- lexical-binding: t -*-
;; Copyright (C) 2019 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)
(require 'image)
(defconst image-tests--emacs-images-directory
(expand-file-name "../etc/images" (getenv "EMACS_TEST_DIRECTORY"))
"Directory containing Emacs images.")
(ert-deftest image--set-property ()
"Test `image--set-property' behavior."
(let ((image (list 'image)))
;; Add properties.
(setf (image-property image :scale) 1)
(should (equal image '(image :scale 1)))
(setf (image-property image :width) 8)
(should (equal image '(image :scale 1 :width 8)))
(setf (image-property image :height) 16)
(should (equal image '(image :scale 1 :width 8 :height 16)))
;; Delete properties.
(setf (image-property image :type) nil)
(should (equal image '(image :scale 1 :width 8 :height 16)))
(setf (image-property image :scale) nil)
(should (equal image '(image :width 8 :height 16)))
(setf (image-property image :height) nil)
(should (equal image '(image :width 8)))
(setf (image-property image :width) nil)
(should (equal image '(image)))))
(ert-deftest image-type-from-file-header-test ()
"Test image-type-from-file-header."
(should (eq 'svg
(image-type-from-file-header
(expand-file-name "splash.svg"
image-tests--emacs-images-directory)))))
;;; image-tests.el ends here
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