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+;;; exif-tests.el --- tests for exif.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 'exif)
+(require 'seq)
+
+(defun test-image-file (name)
+ (expand-file-name
+ name (expand-file-name "data/image"
+ (or (getenv "EMACS_TEST_DIRECTORY")
+ "../../"))))
+
+(defun exif-elem (exif elem)
+ (plist-get (seq-find (lambda (e)
+ (eq elem (plist-get e :tag-name)))
+ exif)
+ :value))
+
+(ert-deftest test-exif-parse ()
+ (let ((exif (exif-parse (test-image-file "black.jpg"))))
+ (should (equal (exif-elem exif 'make) "Panasonic"))
+ (should (equal (exif-elem exif 'orientation) 1))
+ (should (equal (exif-elem exif 'x-resolution) '(180 . 1)))))
+
+;;; exif-tests.el ends here