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;;; custom-tests.el --- tests for custom.el -*- lexical-binding: t -*-
;; Copyright (C) 2018-2019 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 this program. If not, see <https://www.gnu.org/licenses/>.
;;; Code:
(require 'ert)
(ert-deftest custom-theme--load-path ()
"Test `custom-theme--load-path' behavior."
(let ((tmpdir (file-name-as-directory (make-temp-file "custom-tests-" t))))
(unwind-protect
;; Create all temporary files under the same deletable parent.
(let ((temporary-file-directory tmpdir))
;; Path is empty.
(let ((custom-theme-load-path ()))
(should (null (custom-theme--load-path))))
;; Path comprises non-existent file.
(let* ((name (make-temp-name tmpdir))
(custom-theme-load-path (list name)))
(should (not (file-exists-p name)))
(should (null (custom-theme--load-path))))
;; Path comprises existing file.
(let* ((file (make-temp-file "file"))
(custom-theme-load-path (list file)))
(should (file-exists-p file))
(should (not (file-directory-p file)))
(should (null (custom-theme--load-path))))
;; Path comprises existing directory.
(let* ((dir (make-temp-file "dir" t))
(custom-theme-load-path (list dir)))
(should (file-directory-p dir))
(should (equal (custom-theme--load-path) custom-theme-load-path)))
;; Expand `custom-theme-directory' path element.
(let ((custom-theme-load-path '(custom-theme-directory)))
(let ((custom-theme-directory (make-temp-name tmpdir)))
(should (not (file-exists-p custom-theme-directory)))
(should (null (custom-theme--load-path))))
(let ((custom-theme-directory (make-temp-file "file")))
(should (file-exists-p custom-theme-directory))
(should (not (file-directory-p custom-theme-directory)))
(should (null (custom-theme--load-path))))
(let ((custom-theme-directory (make-temp-file "dir" t)))
(should (file-directory-p custom-theme-directory))
(should (equal (custom-theme--load-path)
(list custom-theme-directory)))))
;; Expand t path element.
(let ((custom-theme-load-path '(t)))
(let ((data-directory (make-temp-name tmpdir)))
(should (not (file-exists-p data-directory)))
(should (null (custom-theme--load-path))))
(let ((data-directory tmpdir)
(themedir (expand-file-name "themes" tmpdir)))
(should (not (file-exists-p themedir)))
(should (null (custom-theme--load-path)))
(with-temp-file themedir)
(should (file-exists-p themedir))
(should (not (file-directory-p themedir)))
(should (null (custom-theme--load-path)))
(delete-file themedir)
(make-directory themedir)
(should (file-directory-p themedir))
(should (equal (custom-theme--load-path) (list themedir))))))
(when (file-directory-p tmpdir)
(delete-directory tmpdir t)))))
(defcustom custom--test-user-option 'foo
"User option for test."
:group 'emacs
:type 'symbol)
(defvar custom--test-variable 'foo
"Variable for test.")
;; This is demonstrating bug#34027.
(ert-deftest custom--test-theme-variables ()
"Test variables setting with enabling / disabling a custom theme."
:expected-result :failed
;; We load custom-resources/custom--test-theme.el.
(let ((custom-theme-load-path
`(,(expand-file-name "custom-resources" (file-name-directory #$)))))
(load-theme 'custom--test 'no-confirm 'no-enable)
;; The variables have still their initial values.
(should (equal custom--test-user-option 'foo))
(should (equal custom--test-variable 'foo))
(custom-set-variables
'(custom--test-user-option 'baz)
'(custom--test-variable 'baz))
;; The initial values have been changed.
(should (equal custom--test-user-option 'baz))
(should (equal custom--test-variable 'baz))
(enable-theme 'custom--test)
;; The variables have the theme values.
(should (equal custom--test-user-option 'bar))
(should (equal custom--test-variable 'bar))
(disable-theme 'custom--test)
;; The variables should have the changed values, by reverting.
;; This doesn't work as expected. Instead, they have their
;; initial values `foo'.
(should (equal custom--test-user-option 'baz))
(should (equal custom--test-variable 'baz))))
;;; custom-tests.el ends here
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