;;; test-org-list.el --- Tests for org-list.el

;; Copyright (C) 2012  Nicolas Goaziou

;; Author: Nicolas Goaziou <n.goaziou at gmail dot com>

;; 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/>.

;;; Code:

(ert-deftest test-org-list/list-ending ()
  "Test if lists end at the right place."
  ;; With two blank lines.
  (org-test-with-temp-text "- item\n\n\n  Text"
    (goto-line 4)
    (should-not (org-in-item-p)))
  ;; With text less indented than top items.
  (org-test-with-temp-text "- item\nText"
    (goto-line 2)
    (should-not (org-in-item-p)))
  ;; Though, blank lines and text indentation is ignored in blocks.
  (org-test-with-temp-text
      "- item\n  #+begin_quote\n\n\nText at column 0\n  #+end_quote\n Text"
    (goto-line 7)
    (should (org-in-item-p))))

(ert-deftest test-org-list/list-navigation ()
  "Test list navigation specifications."
  (org-test-with-temp-text "
- item A
- item B


- item 1
  - item 1.1
  - item 1.2
  - item 1.3
- item 2


- item X
- item Y"
    (let ((org-list-use-circular-motion nil))
      ;; 1. Test `org-next-item'.
      ;;
      ;; 1.1. Should return an error if at last item in
      ;;      a list/sub-list, unless `org-list-use-circular-motion'
      ;;      is non-nil.
      (goto-line 9)
      (should-error (org-next-item))
      (let ((org-list-use-circular-motion t))
	(should (progn (org-next-item) t)))
      (goto-line 14)
      (should-error (org-next-item))
      (let ((org-list-use-circular-motion t))
	(should (progn (org-next-item) t)))
      ;; 1.2. Should jump over sub-lists.
      (goto-line 6)
      (org-next-item)
      (should (looking-at "- item 2"))
      ;; 1.3. Shouldn't move to another list.
      (goto-line 3)
      (should-error (org-next-item))
      (should-not (looking-at "- item 1"))
      ;; 1.4. Should move to the list/sub-list first item when
      ;;     `org-list-use-circular-motion' is non-nil.
      (let ((org-list-use-circular-motion t))
	(goto-line 10)
	(org-next-item)
	(should (looking-at "- item 1"))
	(goto-line 9)
	(org-next-item)
	(should (looking-at "  - item 1.1")))
      ;; 2. Test `org-previous-item'.
      ;;
      ;; 2.1. Should return an error if at first item in
      ;;      a list/sub-list, unless `org-list-use-circular-motion is
      ;;      non-nil.
      (goto-line 7)
      (should-error (org-previous-item))
      (let ((org-list-use-circular-motion t))
	(should (progn (org-previous-item) t)))
      (goto-line 13)
      (should-error (org-previous-item))
      (let ((org-list-use-circular-motion t))
	(should (progn (org-previous-item) t)))
      ;; 2.2. Should ignore sub-lists.
      (goto-line 10)
      (org-previous-item)
      (should (looking-at "- item 1"))
      ;; 2.3. Shouldn't move to another list.
      (goto-line 6)
      (should-error (org-previous-item))
      (should-not (looking-at "- item B"))
      ;; 2.4. Should move to the list/sub-list last item when
      ;;      `org-list-use-circular-motion' is non-nil.
      (let ((org-list-use-circular-motion t))
	(goto-line 6)
	(org-previous-item)
	(should (looking-at "- item 2"))
	(goto-line 7)
	(org-previous-item)
	(should (looking-at "  - item 1.3"))))))

(ert-deftest test-org-list/indent-item ()
  "Test `org-indent-item' specifications."
  ;; 1. Error when not at an item.
  (org-test-with-temp-text "Paragraph."
    (should-error (org-indent-item)))
  ;; 2. Error when trying to move first item of a list.
  (org-test-with-temp-text "
- Item 1
- Item 2"
    (forward-line)
    (should-error (org-indent-item)))
  ;; 3. Indent a single item, not its children.
  (org-test-with-temp-text "
- Item 1
- Item 2
  - Item 2.1"
    (search-forward "- Item 2")
    (let (org-list-demote-modify-bullet) (org-indent-item))
    (should (equal (buffer-string)
		   "
- Item 1
  - Item 2
  - Item 2.1")))
  ;; 4. Follow `org-list-demote-modify-bullet' specifications.
  ;;
  ;; 4.1. With unordered lists.
  (org-test-with-temp-text "
- Item 1
- Item 2"
    (search-forward "- Item 2")
    (let ((org-list-demote-modify-bullet '(("-" . "+")))) (org-indent-item))
    (should (equal (buffer-string)
		   "
- Item 1
  + Item 2")))
  ;; 4.2. and ordered lists.
  (org-test-with-temp-text "
1. Item 1
2. Item 2"
    (search-forward "2. Item 2")
    (let ((org-plain-list-ordered-item-terminator t)
	  (org-list-demote-modify-bullet '(("1." . "+"))))
      (org-indent-item))
    (should (equal (buffer-string)
		   "
1. Item 1
   + Item 2")))
  ;; 5. When a region is selected, indent every item within.
  (org-test-with-temp-text "
- Item 1
- Item 2
- Item 3
"
    (search-forward "- Item 2")
    (beginning-of-line)
    (transient-mark-mode 1)
    (push-mark (point) t t)
    (goto-char (point-max))
    (let (org-list-demote-modify-bullet) (org-indent-item))
    (should (equal (buffer-string)
		   "
- Item 1
  - Item 2
  - Item 3
"))))

(ert-deftest test-org-list/indent-item-tree ()
  "Test `org-indent-item-tree' specifications."
  ;; 1. Error when not at an item.
  (org-test-with-temp-text "Paragraph."
    (should-error (org-indent-item-tree)))
  ;; 2. Indent item along with its children.
  (org-test-with-temp-text "
- Item 1
- Item 2
  - Item 2.1"
    (search-forward "- Item 2")
    (let (org-list-demote-modify-bullet) (org-indent-item-tree))
    (should (equal (buffer-string)
		   "
- Item 1
  - Item 2
    - Item 2.1")))
  ;; 3. Special case: When indenting top item, move the whole list.
  (org-test-with-temp-text "
- Item 1
- Item 2"
    (search-forward "- Item 1")
    (let (org-list-demote-modify-bullet org-odd-levels-only)
      (org-indent-item-tree))
    (should (equal (buffer-string)
		   "
 - Item 1
 - Item 2")))
  ;; 4. Follow `org-list-demote-modify-bullet' specifications.
  ;;
  ;; 4.1. With unordered lists.
  (org-test-with-temp-text "
- Item 1
- Item 2
  + Item 2.1"
    (search-forward "- Item 2")
    (let ((org-list-demote-modify-bullet '(("-" . "+") ("+" . "-"))))
      (org-indent-item-tree))
    (should (equal (buffer-string)
		   "
- Item 1
  + Item 2
    - Item 2.1")))
  ;; 4.2. and ordered lists.
  (org-test-with-temp-text "
1. Item 1
2. Item 2
   + Item 2.1"
    (search-forward "2. Item 2")
    (let ((org-plain-list-ordered-item-terminator t)
	  (org-list-demote-modify-bullet '(("1." . "+") ("+" . "1."))))
      (org-indent-item-tree))
    (should (equal (buffer-string)
		   "
1. Item 1
   + Item 2
     1. Item 2.1")))
  ;; 5. When a region is selected, indent every item within.
  (org-test-with-temp-text "
- Item 1
- Item 2
  - Item 2.1
- Item 3
  - Item 3.1
"
    (search-forward "- Item 2")
    (beginning-of-line)
    (transient-mark-mode 1)
    (push-mark (point) t t)
    (goto-char (point-max))
    (let (org-list-demote-modify-bullet) (org-indent-item-tree))
    (should (equal (buffer-string)
		   "
- Item 1
  - Item 2
    - Item 2.1
  - Item 3
    - Item 3.1
"))))

(ert-deftest test-org-list/outdent-item ()
  "Test `org-outdent-item' specifications."
  ;; 1. Error when not at an item.
  (org-test-with-temp-text "Paragraph."
    (should-error (org-outdent-item)))
  ;; 2. Error when trying to move first item of a list.
  (org-test-with-temp-text "
- Item 1
- Item 2"
    (forward-line)
    (should-error (org-outdent-item)))
  ;; 3. Error when trying to outdent an item without its children.
  (org-test-with-temp-text "
- Item 1
  - Item 1.1
    - Item 1.1.1"
    (search-forward "- Item 1.1")
    (should-error (org-outdent-item)))
  ;; 4. Error when trying to outdent before top item.
  (org-test-with-temp-text "
  - Item 1
  - Item 2"
    (search-forward "- Item 2")
    (should-error (org-outdent-item)))
  ;; 5. When a region is selected, outdent every item within.
  (org-test-with-temp-text "
- Item 1
  - Item 2
  - Item 3
"
    (search-forward "- Item 2")
    (beginning-of-line)
    (transient-mark-mode 1)
    (push-mark (point) t t)
    (goto-char (point-max))
    (let (org-list-demote-modify-bullet) (org-outdent-item))
    (should (equal (buffer-string)
		   "
- Item 1
- Item 2
- Item 3
"))))

(ert-deftest test-org-list/outdent-item-tree ()
  "Test `org-outdent-item-tree' specifications."
  ;; 1. Error when not at an item.
  (org-test-with-temp-text "Paragraph."
    (should-error (org-outdent-item-tree)))
  ;; 2. Error when trying to outdent before top item.
  (org-test-with-temp-text "
  - Item 1
  - Item 2"
    (search-forward "- Item 2")
    (should-error (org-outdent-item-tree)))
  ;; 3. Outdent item along with its children.
  (org-test-with-temp-text "
- Item 1
  - Item 2
    - Item 2.1"
    (search-forward "- Item 2")
    (org-outdent-item-tree)
    (should (equal (buffer-string)
		   "
- Item 1
- Item 2
  - Item 2.1")))
  ;; 3. Special case: When outdenting top item, move the whole list.
  (org-test-with-temp-text "
 - Item 1
 - Item 2"
    (search-forward "- Item 1")
    (let (org-odd-levels-only) (org-outdent-item-tree))
    (should (equal (buffer-string)
		   "
- Item 1
- Item 2")))
  ;; 5. When a region is selected, outdent every item within.
  (org-test-with-temp-text "
- Item 1
  - Item 2
    - Item 2.1
  - Item 3
    - Item 3.1
"
    (search-forward "- Item 2")
    (beginning-of-line)
    (transient-mark-mode 1)
    (push-mark (point) t t)
    (goto-char (point-max))
    (org-outdent-item-tree)
    (should (equal (buffer-string)
		   "
- Item 1
- Item 2
  - Item 2.1
- Item 3
  - Item 3.1
"))))

(ert-deftest test-org-list/move-item-down ()
  "Test `org-move-item-down' specifications."
  ;; Standard test.
  (org-test-with-temp-text "- item 1\n- item 2"
    (org-move-item-down)
    (should (equal (buffer-string)
		   "- item 2\n- item 1")))
  ;; Keep same column in item.
  (org-test-with-temp-text "- item 1\n- item 2"
    (forward-char 4)
    (org-move-item-down)
    (should (looking-at "em 1")))
  ;; Move sub-items.
  (org-test-with-temp-text "- item 1\n  - sub-item 1\n- item 2"
    (org-move-item-down)
    (should (equal (buffer-string)
		   "- item 2\n- item 1\n  - sub-item 1")))
  ;; Preserve blank lines.
  (org-test-with-temp-text "- item 1\n\n- item 2"
    (let ((org-empty-line-terminates-plain-lists nil)) (org-move-item-down))
    (should (equal (buffer-string) "- item 2\n\n- item 1")))
  ;; Error when trying to move the last item...
  (org-test-with-temp-text "- item 1\n- item 2"
    (forward-line)
    (should-error (org-move-item-down)))
  ;; ... unless `org-list-use-circular-motion' is non-nil.  In this
  ;; case, move to the first item.
  (org-test-with-temp-text "- item 1\n- item 2\n- item 3"
    (forward-line 2)
    (let ((org-list-use-circular-motion t)) (org-move-item-down))
    (should (equal (buffer-string) "- item 3\n- item 1\n- item 2\n")))
  ;; Preserve item visibility.
  (org-test-with-temp-text "* Headline\n- item 1\n  body 1\n- item 2\n  body 2"
    (let ((org-cycle-include-plain-lists t))
      (search-forward "- item 1")
      (org-cycle)
      (search-forward "- item 2")
      (org-cycle))
    (search-backward "- item 1")
    (org-move-item-down)
    (forward-line)
    (should (org-invisible-p2))
    (search-backward " body 2")
    (should (org-invisible-p2)))
  ;; Preserve children visibility.
  (org-test-with-temp-text "* Headline
- item 1
  - sub-item 1
    sub-body 1
- item 2
  - sub-item 2
    sub-body 2"
    (let ((org-cycle-include-plain-lists t))
      (search-forward "- sub-item 1")
      (org-cycle)
      (search-forward "- sub-item 2")
      (org-cycle))
    (search-backward "- item 1")
    (org-move-item-down)
    (search-forward "sub-body 1")
    (should (org-invisible-p2))
    (search-backward "sub-body 2")
    (should (org-invisible-p2)))
  ;; Preserve contents visibility.
  (org-test-with-temp-text "
- item 1
  #+BEGIN_CENTER
  Text1
  #+END_CENTER
- item 2
  #+BEGIN_CENTER
  Text2
  #+END_CENTER"
    (org-hide-block-all)
    (search-forward "- item 1")
    (org-move-item-down)
    (search-forward "Text1")
    (should (org-invisible-p2))
    (search-backward "Text2")
    (should (org-invisible-p2))))

(ert-deftest test-org-list/move-item-up ()
  "Test `org-move-item-up' specifications."
  ;; Standard test.
  (org-test-with-temp-text "- item 1\n- item 2"
    (forward-line)
    (org-move-item-up)
    (should (equal (buffer-string)
		   "- item 2\n- item 1")))
  ;; Keep same column in item.
  (org-test-with-temp-text "- item 1\n- item 2"
    (forward-line)
    (forward-char 4)
    (org-move-item-up)
    (should (looking-at "em 2")))
  ;; Move sub-items.
  (org-test-with-temp-text "- item 1\n- item 2\n  - sub-item 2"
    (forward-line)
    (org-move-item-up)
    (should (equal (buffer-string)
		   "- item 2\n  - sub-item 2\n- item 1")))
  ;; Preserve blank lines.
  (org-test-with-temp-text "- item 1\n\n- item 2"
    (search-forward "- item 2")
    (let ((org-empty-line-terminates-plain-lists nil)) (org-move-item-up))
    (should (equal (buffer-string) "- item 2\n\n- item 1")))
  ;; Error when trying to move the first item...
  (org-test-with-temp-text "- item 1\n- item 2"
    (should-error (org-move-item-up)))
  ;; ... unless `org-list-use-circular-motion' is non-nil.  In this
  ;; case, move to the first item.
  (org-test-with-temp-text "- item 1\n- item 2\n- item 3"
    (let ((org-list-use-circular-motion t)) (org-move-item-up))
    (should (equal (buffer-string) "- item 2\n- item 3\n- item 1")))
  ;; Preserve item visibility.
  (org-test-with-temp-text "* Headline\n- item 1\n  body 1\n- item 2\n  body 2"
    (let ((org-cycle-include-plain-lists t))
      (search-forward "- item 1")
      (org-cycle)
      (search-forward "- item 2")
      (org-cycle))
    (org-move-item-up)
    (forward-line)
    (should (org-invisible-p2))
    (search-forward " body 1")
    (should (org-invisible-p2)))
  ;; Preserve children visibility.
  (org-test-with-temp-text "* Headline
- item 1
  - sub-item 1
    sub-body 1
- item 2
  - sub-item 2
    sub-body 2"
    (let ((org-cycle-include-plain-lists t))
      (search-forward "- sub-item 1")
      (org-cycle)
      (search-forward "- sub-item 2")
      (org-cycle))
    (search-backward "- item 2")
    (org-move-item-up)
    (search-forward "sub-body 2")
    (should (org-invisible-p2))
    (search-forward "sub-body 1")
    (should (org-invisible-p2)))
  ;; Preserve contents visibility.
  (org-test-with-temp-text "
- item 1
  #+BEGIN_CENTER
  Text1
  #+END_CENTER
- item 2
  #+BEGIN_CENTER
  Text2
  #+END_CENTER"
    (org-hide-block-all)
    (search-forward "- item 2")
    (org-move-item-up)
    (search-forward "Text2")
    (should (org-invisible-p2))
    (search-forward "Text1")
    (should (org-invisible-p2))))


(provide 'test-org-list)
;;; test-org-list.el ends here