;; Copyright (C) 2015 Free Software Foundation, Inc

;; Author: Rocky Bernstein <rocky@gnu.org>

;; This program 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.

;; This program 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 <http://www.gnu.org/licenses/>.

(require 'cl)
(require 'test-simple)
(load-file "../loc-changes.el")

(test-simple-start)

(setq sample-buffer (find-file-noselect "./sample.txt"))

(note "loc-changes-goto-line error conditions")
(assert-raises error (loc-changes-goto-line "foo"))
(message "buffer %s" (current-buffer))
(assert-raises error (loc-changes-goto-line "0"))
(assert-raises error (loc-changes-goto-line 0))
(assert-raises error (loc-changes-goto-line 10000))

(note "loc-changes-goto-line")
(save-excursion
  (set-buffer sample-buffer)
  (loc-changes-goto-line 5)
  (assert-equal 5 (line-number-at-pos (point))))

(note "loc-changes-goto-line-with-column")
(with-current-buffer sample-buffer
  (set-buffer sample-buffer)
  (loc-changes-goto-line 1 3)
  (assert-equal 1 (line-number-at-pos (point)))
  ;; FIXME:
  ;; (assert-equal 2 (current-column))
  )

(note "loc-changes-goto-line-invalid-column")
(save-excursion
  (set-buffer sample-buffer)
  (loc-changes-goto-line 1 300)
  (assert-equal 1 (line-number-at-pos (point)))
  ;; FIXME
  ;; (assert-equal 0 (current-column))
  (assert-t (or
  	     (not (current-message))
  	     (string-match "^Column ignored." (current-message))))
  ;; FIXME:
  ;; (loc-changes-goto-line 2 -5)
  ;; (assert-equal 2 (line-number-at-pos (point)))
  ;; (assert-equal 0 (current-column))
  ;; (assert-t (or
  ;; 	     (not (current-message))
  ;; 	     (string-match "^Column ignored." (current-message))))
  )

(note "loc-changes-clear-buffer null")
(loc-changes-clear-buffer)
(assert-equal '() loc-changes-alist)

(note "loc-changes-add-and-goto - update")
(save-excursion
  (set-buffer sample-buffer)
  (loc-changes-add-and-goto 10)
  (assert-equal 10 (line-number-at-pos)
		"point should be at line 10")
  ;; FIXME:
  ;; (assert-t (assq 10 loc-changes-alist)
  ;; 	    "Should find 10 in loc-changes-alist")
  ;; (assert-t (markerp (cdr (assq 10 loc-changes-alist)))
  ;; 	    "10 in loc-changes-alist should be a marker")
  )

(note "loc-changes-goto - update")
(save-excursion
  (set-buffer sample-buffer)
  (loc-changes-goto 11)
  (assert-equal 11 (line-number-at-pos)
		"point should be at line 11")
  ;; FIXME:
  ;; (assert-t (assq 11 loc-changes-alist)
  ;; 	    "Should find 11 in loc-changes-alist")
  ;; (assert-t (markerp (cdr (assq 11 loc-changes-alist)))
  ;; 	    "11 in loc-changes-alist should be a marker")
  )

(note "loc-changes-goto - no update")
(save-excursion
  (set-buffer sample-buffer)
  (loc-changes-goto 12 nil 't)
  (assert-equal 12 (line-number-at-pos)
		"point should be at line 12")
  (assert-nil (assq 12 loc-changes-alist)
	      "Should not find 12 in loc-changes-alist")
  )

(end-tests)