;;;; org-test.el --- Tests for Org-mode

;; Copyright (c) 2010 Sebastian Rose, Eric Schulte
;; Authors:
;;     Sebastian Rose, Hannover, Germany, sebastian_rose gmx de
;;     Eric Schulte, Santa Fe, New Mexico, USA, schulte.eric gmail com

;; Released under the GNU General Public License version 3
;; see: http://www.gnu.org/licenses/gpl-3.0.html

;;;; Comments:

;; Interactive testing for Org mode.

;; The heart of all this is the commands `org-test-current-defun'.  If
;; called while in a `defun' all ert tests with names matching the
;; name of the function are run.

;;; Prerequisites:

;; ERT and jump.el are both installed as git submodules to install
;;   them run
;;   $ git submodule init
;;   $ git submodule update


;;;; Code:
(require 'ert-batch)
(require 'ert)
(require 'ert-exp)
(require 'ert-exp-t)
(require 'ert-run)
(require 'ert-ui)
(require 'which-func)
(require 'org)

(defconst org-test-default-test-file-name "tests.el"
  "For each defun a separate file with tests may be defined.
tests.el is the fallback or default if you like.")

(defconst org-test-default-directory-name "testing"
  "Basename or the directory where the tests live.
org-test searches this directory up the directory tree.")

(defconst org-test-dir
  (expand-file-name (file-name-directory (or load-file-name buffer-file-name))))

(defconst org-test-example-file-name
  (expand-file-name "example-file.org" org-test-dir))


;;; Functions for writing tests

;; TODO
(defun org-test-buffer (&optional file)
  "TODO:  Setup and return a buffer to work with.
If file is non-nil insert it's contents in there.")

;; TODO
(defun org-test-compare-with-file (&optional file)
  "TODO:  Compare the contents of the test buffer with FILE.
If file is not given, search for a file named after the test
currently executed.")

(defmacro in-org-example-file (&rest body)
  "Execute body in the Org-mode example file."
  (declare (indent 0))
  `(let ((visited-p (get-file-buffer org-test-example-file-name))
	 to-be-removed)
     (save-window-excursion
       (save-match-data
	 (find-file org-test-example-file-name)
	 (setq to-be-removed (current-buffer))
	 (goto-char (point-min))
	 (outline-next-visible-heading 1)
	 (org-show-subtree)
	 (org-show-block-all)
	 ,@body))
     (unless visited-p
       (kill-buffer to-be-removed))))


;;; Load and Run tests

(defun org-load-tests ()
  "Load up the org-mode test suite."
  (interactive)
  (mapc (lambda (file) (load-file file))
	(directory-files (expand-file-name "lisp" org-test-dir)
			 'full "^\\([^.]\\|\\.\\([^.]\\|\\..\\)\\).*\\.el")))

(defun org-test-current-defun ()
  "Test the current function."
  (interactive)
  (ert (car (which-function))))

(defun org-test-run-all-tests ()
  "Run all defined tests matching \"^org\".
Load all test files first."
  (interactive)
  (org-load-tests)
  (ert "^org"))

(provide 'org-test)

;;; org-test.el ends here