;;; vc-git-tests.el --- tests for vc/vc-git.el

;; Copyright (C) 2016 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:

;;; Code:

(require 'ert)
(require 'vc-git)

;; This will break when merged from the emacs-25 branch to master,
;; because of the change of directory structure. The actual file is
;; not important at all, so long as it is checked into git.
(defvar vc-git-tests-file
  (concat
   (expand-file-name
    "data/xref/"
    (file-name-directory (or load-file-name (buffer-file-name))))
   "file1.txt"))


(ert-deftest open-this-file ()
  "Test for Bug #23769."
  (should
   (let ((git-dir (getenv "GIT_DIR")))
     (unwind-protect
         (progn
           (setenv "GIT_DIR" nil)
           (find-file vc-git-tests-file))
       (when (get-file-buffer vc-git-tests-file)
         (setenv "GIT_DIR" git-dir)
         (kill-buffer (get-file-buffer vc-git-tests-file))))))
  (should
   (let ((git-dir (getenv "GIT_DIR")))
     (unwind-protect
         (progn
           (setenv "GIT_DIR" ".git")
           (find-file vc-git-tests-file))
       (when (get-file-buffer vc-git-tests-file)
         (setenv "GIT_DIR" git-dir)
         (kill-buffer (get-file-buffer vc-git-tests-file)))))))


;;; vc-git-tests.el ends here