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80 lines
2.9 KiB
EmacsLisp
80 lines
2.9 KiB
EmacsLisp
;;; image-tests.el --- tests for image.el -*- lexical-binding: t -*-
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;; Copyright (C) 2019-2020 Free Software Foundation, Inc.
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Code:
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(require 'ert)
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(require 'image)
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(eval-when-compile
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(require 'cl-lib))
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(defconst image-tests--emacs-images-directory
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(expand-file-name "../etc/images" (getenv "EMACS_TEST_DIRECTORY"))
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"Directory containing Emacs images.")
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(ert-deftest image--set-property ()
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"Test `image--set-property' behavior."
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(let ((image (list 'image)))
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;; Add properties.
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(setf (image-property image :scale) 1)
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(should (equal image '(image :scale 1)))
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(setf (image-property image :width) 8)
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(should (equal image '(image :scale 1 :width 8)))
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(setf (image-property image :height) 16)
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(should (equal image '(image :scale 1 :width 8 :height 16)))
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;; Delete properties.
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(setf (image-property image :type) nil)
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(should (equal image '(image :scale 1 :width 8 :height 16)))
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(setf (image-property image :scale) nil)
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(should (equal image '(image :width 8 :height 16)))
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(setf (image-property image :height) nil)
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(should (equal image '(image :width 8)))
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(setf (image-property image :width) nil)
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(should (equal image '(image)))))
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(ert-deftest image-type-from-file-header-test ()
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"Test image-type-from-file-header."
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(should (eq (if (image-type-available-p 'svg) 'svg)
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(image-type-from-file-header
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(expand-file-name "splash.svg"
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image-tests--emacs-images-directory)))))
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(ert-deftest image-rotate ()
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"Test `image-rotate'."
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(cl-letf* ((image (list 'image))
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((symbol-function 'image--get-imagemagick-and-warn)
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(lambda () image)))
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(let ((current-prefix-arg '(4)))
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(call-interactively #'image-rotate))
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(should (equal image '(image :rotation 270.0)))
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(call-interactively #'image-rotate)
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(should (equal image '(image :rotation 0.0)))
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(image-rotate)
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(should (equal image '(image :rotation 90.0)))
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(image-rotate 0)
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(should (equal image '(image :rotation 90.0)))
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(image-rotate 1)
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(should (equal image '(image :rotation 91.0)))
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(image-rotate 1234.5)
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(should (equal image '(image :rotation 245.5)))
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(image-rotate -154.5)
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(should (equal image '(image :rotation 91.0)))))
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;;; image-tests.el ends here
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