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| | ;;; mailcap-tests.el --- tests for mailcap.el -*- lexical-binding: t -*-
;; Copyright (C) 2017-2022 Free Software Foundation, Inc.
;; Author: Mark Oteiza <mvoteiza@udel.edu>
;; 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/>.
;;; Commentary:
;;; Code:
(require 'ert)
(require 'ert-x)
(require 'mailcap)
(defconst mailcap-tests-path (ert-resource-file "mime.types")
"String used as PATH argument of `mailcap-parse-mimetypes'.")
(defconst mailcap-tests-mime-extensions (copy-alist mailcap-mime-extensions))
(defconst mailcap-tests-path-extensions
'((".wav" . "audio/x-wav")
(".flac" . "audio/flac")
(".opus" . "audio/ogg"))
"Alist of MIME associations in `mailcap-tests-path'.")
(ert-deftest mailcap-mimetypes-parsed-p ()
(should (null mailcap-mimetypes-parsed-p)))
(ert-deftest mailcap-parse-empty-path ()
"If PATH is empty, this should be a noop."
(mailcap-parse-mimetypes "file/that/should/not/exist" t)
(should mailcap-mimetypes-parsed-p)
(should (equal mailcap-mime-extensions mailcap-tests-mime-extensions)))
(ert-deftest mailcap-parse-path ()
(let ((mimetypes (getenv "MIMETYPES")))
(unwind-protect
(progn
(setenv "MIMETYPES" mailcap-tests-path)
(mailcap-parse-mimetypes nil t))
(setenv "MIMETYPES" mimetypes)))
(should (equal mailcap-mime-extensions
(append mailcap-tests-path-extensions
mailcap-tests-mime-extensions)))
;; Already parsed this, should be a noop
(mailcap-parse-mimetypes mailcap-tests-path)
(should (equal mailcap-mime-extensions
(append mailcap-tests-path-extensions
mailcap-tests-mime-extensions))))
(defmacro with-pristine-mailcap (&rest body)
;; We only want the mailcap info we define ourselves.
`(let (mailcap--computed-mime-data
mailcap-mime-data
mailcap-user-mime-data)
;; `mailcap-mime-info' calls `mailcap-parse-mailcaps' which parses
;; the system's mailcaps. We don't want that for our test.
(cl-letf (((symbol-function 'mailcap-parse-mailcaps) #'ignore))
,@body)))
(ert-deftest mailcap-parsing-and-mailcap-mime-info ()
(with-pristine-mailcap
;; One mailcap entry has a test=false field. The shell command
;; execution errors when running the tests from the Makefile
;; because then HOME=/nonexistent.
(let ((home (getenv "HOME")))
(unwind-protect
(ert-with-temp-directory tmp-home
(setenv "HOME" tmp-home)
;; Now parse our resource mailcap file.
(mailcap-parse-mailcap (ert-resource-file "mailcap"))
;; Assert that we get what we have defined.
(dolist (type '("audio/ogg" "audio/flac"))
(should (string= "mpv %s" (mailcap-mime-info type))))
(should (string= "aplay %s" (mailcap-mime-info "audio/x-wav")))
(should (string= "emacsclient -t %s"
(mailcap-mime-info "text/plain")))
;; evince is chosen because acroread has test=false and okular
;; comes later.
(should (string= "evince %s"
(mailcap-mime-info "application/pdf")))
(should (string= "inkscape %s"
(mailcap-mime-info "image/svg+xml")))
(should (string= "eog %s"
(mailcap-mime-info "image/jpg")))
;; With REQUEST being a number, all fields of the selected entry
;; should be returned.
(should (equal '((viewer . "evince %s")
(type . "application/pdf"))
(mailcap-mime-info "application/pdf" 1)))
;; With 'all, all applicable entries should be returned.
(should (equal '(((viewer . "evince %s")
(type . "application/pdf"))
((viewer . "okular %s")
(type . "application/pdf")))
(mailcap-mime-info "application/pdf" 'all)))
(let* ((c nil)
(toggle (lambda (_) (setq c (not c)))))
(mailcap-add "audio/ogg" "toggle %s" toggle)
(should (string= "toggle %s" (mailcap-mime-info "audio/ogg")))
;; The test results are cached, so in order to have the test
;; re-evaluated, one needs to clear the cache.
(setq mailcap-viewer-test-cache nil)
(should (string= "mpv %s" (mailcap-mime-info "audio/ogg")))
(setq mailcap-viewer-test-cache nil)
(should (string= "toggle %s" (mailcap-mime-info "audio/ogg")))))
(setenv "HOME" home)))))
(defvar mailcap--test-result nil)
(defun mailcap--test-viewer ()
(setq mailcap--test-result (string= (buffer-string) "test\n")))
(ert-deftest mailcap-view-file ()
(with-pristine-mailcap
;; Try using a lambda as viewer and check wether
;; `mailcap-view-file' works correctly.
(let* ((mailcap-mime-extensions '((".test" . "test/test"))))
(mailcap-add "test/test" 'mailcap--test-viewer)
(save-window-excursion
(mailcap-view-file (ert-resource-file "test.test")))
(should mailcap--test-result))))
;;; mailcap-tests.el ends here
|