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;;; paragraphs-tests.el --- Tests for paragraphs.el -*- lexical-binding: t; -*-
;; Copyright (C) 2019-2025 Free Software Foundation, Inc.
;; Author: Stefan Kangas <stefankangas@gmail.com>
;; 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 <https://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
(require 'ert)
(require 'ert-x)
;; (require 'paragraphs) ; loaded by default
(ert-deftest paragraphs-tests-sentence-end ()
(should (> (length (sentence-end)) 0))
(let ((sentence-end "override works"))
(should (equal (sentence-end) sentence-end))))
(ert-deftest paragraphs-tests-forward-backward-paragraph ()
(with-temp-buffer
(insert "AA\nAA\n\nBB\nBB\n")
(goto-char (point-min))
(forward-paragraph)
(should (equal (point) 7))
(forward-paragraph)
(should (equal (point) 14))
(backward-paragraph)
(should (equal (point) 7))
(backward-paragraph)
(should (equal (point) (point-min)))))
(ert-deftest paragraphs-tests-mark-paragraph ()
(with-temp-buffer
(insert "AA\nAA\n\nBB\nBB\n")
(goto-char (point-min))
(mark-paragraph)
(should mark-active)
(should (equal (mark) 7))))
;;; (should-error (mark-paragraph 0)))
(ert-deftest paragraphs-tests-kill-paragraph ()
(with-temp-buffer
(insert "AA\nAA\n\nBB\nBB\n")
(goto-char (point-min))
(kill-paragraph nil)
(should (equal (buffer-string) "\nBB\nBB\n"))))
(ert-deftest paragraphs-tests-backward-kill-paragraph ()
(with-temp-buffer
(insert "AA\nAA\n\nBB\nBB\n")
(goto-char 7)
(backward-kill-paragraph nil)
(should (equal (buffer-string) "\nBB\nBB\n"))))
(ert-deftest paragraphs-tests-transpose-paragraphs ()
(with-temp-buffer
(insert "AA\nAA\n\nBB\nBB\n")
(goto-char (point-min))
(transpose-paragraphs 1)
(should (equal (buffer-string) "\nBB\nBB\nAA\nAA\n"))))
(ert-deftest paragraphs-tests-start-of-paragraph-text ()
(with-temp-buffer
(insert "AA\nAA\n\nBB\nBB\n")
(goto-char (point-max))
(start-of-paragraph-text)
(should (equal (point) 8))))
(ert-deftest paragraphs-tests-end-of-paragraph-text ()
(with-temp-buffer
(insert "AA\nAA\n\nBB\nBB\n")
(goto-char (point-min))
(end-of-paragraph-text)
(should (equal (point) 6))))
(ert-deftest paragraphs-tests-forward-sentence ()
(with-temp-buffer
(insert "First sentence. Second sentence.")
(goto-char (point-min))
(forward-sentence)
(should (equal (point) 16))
(goto-char (point-min))
(forward-sentence 2)
(should (equal (point) 34))))
(ert-deftest paragraphs-tests-repunctuate-sentences ()
(with-temp-buffer
(insert "Just. Some. Sentences.")
(goto-char (point-min))
(repunctuate-sentences t)
(should (equal (buffer-string) "Just. Some. Sentences."))))
(ert-deftest paragraphs-tests-backward-sentence ()
(with-temp-buffer
(insert "First sentence. Second sentence.")
(goto-char (point-max))
(backward-sentence)
(should (equal (point) 18))))
(ert-deftest paragraphs-tests-kill-sentence ()
(with-temp-buffer
(insert "First sentence. Second sentence.")
(goto-char (point-min))
(kill-sentence)
(should (equal (buffer-string) " Second sentence."))))
(ert-deftest paragraphs-tests-backward-kill-sentence ()
(with-temp-buffer
(insert "Should not be killed. Should be killed.")
(goto-char (point-max))
(backward-kill-sentence)
(should (equal (buffer-string) "Should not be killed. "))))
(ert-deftest paragraphs-tests-mark-end-of-sentence ()
(with-temp-buffer
(insert "Example sentence. Followed by another one.")
(goto-char (point-min))
(mark-end-of-sentence 1)
(should mark-active)
(should (equal (mark) 18)))
(with-temp-buffer
(insert "Example sentence. Followed by another one.")
(goto-char (point-min))
(mark-end-of-sentence 2)
(should mark-active)
(should (equal (mark) 44)))
;; FIXME: This does not work -- how do I do it?
(with-temp-buffer ; test repeating the command
(insert "Example sentence. Followed by another one.")
(goto-char (point-min))
(mark-end-of-sentence 1)
(setq last-command 'mark-end-of-sentence) ; hack
(mark-end-of-sentence 1)
(should mark-active)
(should (equal (mark) 18))))
(ert-deftest paragraphs-tests-transpose-sentences ()
(with-temp-buffer
(insert "First sentence. Second sentence. Third sentence.")
(goto-char (point-min))
(transpose-sentences 1)
(should (equal (buffer-string)
"Second sentence. First sentence. Third sentence."))
(goto-char (point-min))
(transpose-sentences 2)
(should (equal (buffer-string)
"First sentence. Third sentence. Second sentence."))))
(ert-deftest test-mark-paragraphs ()
(with-current-buffer
(find-file-noselect (ert-resource-file "mark-paragraph.bin"))
(goto-char (point-max))
;; Just a sanity check that the file hasn't changed.
(should (= (point) 54))
(mark-paragraph)
(should (= (point) 42))
(should (= (mark) 54))
;; Doesn't move.
(mark-paragraph)
(should (= (point) 42))
(should (= (mark) 54))
(forward-line -1)
(mark-paragraph)
(should (= (point) 25))
(should (= (mark) 42))
(goto-char (point-min))
(mark-paragraph)
(should (= (point) 1))
(should (= (mark) 17))))
(provide 'paragraphs-tests)
;;; paragraphs-tests.el ends here
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