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;;; exiftool.el --- Elisp wrapper around exiftool ;; -*- lexical-binding: t -*-
;; Elisp wrapper around exiftool
;; Copyright (C) 2017, 2019, 2021 by Arun I
;;
;; Author: Arun I <arunisaac@systemreboot.net>
;; Keywords: data
;; Homepage: https://git.systemreboot.net/exiftool.el
;; This file is part of exiftool.el.
;; exiftool.el 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.
;; exiftool.el 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 exiftool.el. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; Unit testing for exiftool.el
;;; Code:
(require 'exiftool)
(require 'cl-lib)
(require 'ert)
(defvar exiftool-tests--tag-value
'(("Marked" . "True")
("Creator" . "foo")
("Rights" . "-")
("Publisher" . "")
("Source" . "http://example.com")
("Subject" . "foo:bar")
("Description" . "foo: bar")))
(defvar exiftool-tests--tags
(mapcar (cl-function
(lambda ((tag . value))
tag))
exiftool-tests--tag-value))
(defmacro with-temp-test-file (test-file temp-file &rest body)
"Copy TEST-FILE to temporary file, put path in TEMP-FILE, evaluate BODY."
(declare (indent defun))
`(let ((,temp-file (make-temp-file
"exiftool-" nil (concat "-" ,test-file))))
(copy-file ,(expand-file-name test-file "tests") ,temp-file t)
,@body
(delete-file ,temp-file)))
(ert-deftest read-write-test ()
(with-temp-test-file "test1.png" temp-file
(apply 'exiftool-write temp-file exiftool-tests--tag-value)
(should (equal (apply 'exiftool-read temp-file exiftool-tests--tags)
exiftool-tests--tag-value))))
(ert-deftest delete-test ()
(with-temp-test-file "test1.png" temp-file
(exiftool-write temp-file (nth 0 exiftool-tests--tag-value))
(let ((delete-pair
(cons (caar exiftool-tests--tag-value) "")))
(exiftool-write temp-file delete-pair)
(should (equal (nth 0 (exiftool-read temp-file "Marked"))
delete-pair)))))
(ert-deftest copy-all-test ()
(with-temp-test-file "test1.png" temp-1
(with-temp-test-file "test2.png" temp-2
(apply 'exiftool-write temp-1 exiftool-tests--tag-value)
(exiftool-copy temp-1 temp-2)
(should (equal (apply 'exiftool-read temp-1 exiftool-tests--tags)
(apply 'exiftool-read temp-2 exiftool-tests--tags))))))
(ert-deftest copy-some-test ()
(with-temp-test-file "test1.png" temp-1
(with-temp-test-file "test2.png" temp-2
(apply 'exiftool-write temp-1 exiftool-tests--tag-value)
(let ((some-tags (cl-subseq exiftool-tests--tags 2)))
(apply 'exiftool-copy temp-1 temp-2 some-tags)
(should (and (not (equal (apply 'exiftool-read temp-1 exiftool-tests--tags)
(apply 'exiftool-read temp-2 exiftool-tests--tags)))
(equal (apply 'exiftool-read temp-1 some-tags)
(apply 'exiftool-read temp-2 some-tags))))))))
(ert-deftest read-file-not-found-test ()
(should-error (exiftool-read "non-existent-file.png")
:type 'file-missing))
(ert-deftest copy-file-not-found-test ()
(should-error (exiftool-copy "non-existent-file-1.png"
"non-existent-file-2.png")
:type 'file-missing))
(ert-deftest write-file-not-found-test ()
(should-error (exiftool-write "non-existent-file.png")
:type 'file-missing))
(provide 'exiftool-tests)
;;; exiftool-tests.el ends here
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