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| | ;;; gv-tests.el --- unit tests for gv.el -*- lexical-binding: t; -*-
;; Copyright (C) 2017 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 <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Unit tests for lisp/emacs-lisp/gv.el.
;;; Code:
(defvar gv-tests--var 'default "Test variable.")
(ert-deftest gv-tests--bug26624 ()
"Checks that Bug#26624 is fixed."
(with-temp-buffer
(let ((var-calls 0) (buf-calls 0))
(should (equal (buffer-local-value 'gv-tests--var (current-buffer))
'default))
(should-not (local-variable-p 'gv-tests--var))
(should-not (local-variable-if-set-p 'gv-tests--var))
(cl-letf (((buffer-local-value
(progn (cl-incf var-calls) 'gv-tests--var)
(progn (cl-incf buf-calls) (current-buffer)))
'unbound))
(should (equal (buffer-local-value 'gv-tests--var (current-buffer))
'unbound))
(should (local-variable-p 'gv-tests--var))
(should (local-variable-if-set-p 'gv-tests--var)))
(should (equal (buffer-local-value 'gv-tests--var (current-buffer))
'default))
(should-not (local-variable-p 'gv-tests--var))
(should-not (local-variable-if-set-p 'gv-tests--var))
(should (equal var-calls 1))
(should (equal buf-calls 1)))))
;;; gv-tests.el ends here
|