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103 lines
3 KiB
EmacsLisp
103 lines
3 KiB
EmacsLisp
;;; page-tests.el --- Tests for page.el -*- lexical-binding: t; -*-
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;; Copyright (C) 2019-2020 Free Software Foundation, Inc.
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;; Author: Simen Heggestøyl <simenheg@gmail.com>
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;; Keywords:
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;
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;;; Code:
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(require 'ert)
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(require 'page)
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(ert-deftest page-tests-forward-page ()
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(with-temp-buffer
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(insert "foo\n \nbar\n \nbaz")
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(forward-page -1)
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(should (looking-at-p "\nbaz"))
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(forward-page -2)
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(should (= (point) (point-min)))
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(forward-page 1)
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(should (looking-at-p "\nbar"))
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(forward-page)
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(should (looking-at-p "\nbaz"))
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(forward-page 1)
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(should (= (point) (point-max)))))
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(ert-deftest page-tests-backward-page ()
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(with-temp-buffer
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(insert "foo\n \nbar\n \nbaz")
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(backward-page 1)
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(should (looking-at-p "\nbaz"))
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(backward-page)
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(should (looking-at-p "\nbar"))
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(backward-page 1)
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(should (= (point) (point-min)))
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(backward-page -1)
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(should (looking-at-p "\nbar"))
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(backward-page -2)
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(should (= (point) (point-max)))))
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(defun page-tests--region-string ()
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"Return the contents of the region as a string."
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(buffer-substring (region-beginning) (region-end)))
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(ert-deftest page-tests-mark-page ()
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(with-temp-buffer
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(insert "foo\n \nbar\n \nbaz")
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(mark-page)
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(should (equal (page-tests--region-string) "\nbaz"))
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(mark-page -2)
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(should (equal (page-tests--region-string) "foo\n "))
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(mark-page 1)
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(should (equal (page-tests--region-string) "\nbar\n "))))
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(ert-deftest page-tests-narrow-to-page ()
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(with-temp-buffer
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(insert "foo\n \nbar\n \nbaz")
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(goto-char (point-min))
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(narrow-to-page)
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(should (equal (buffer-string) "foo\n"))
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(narrow-to-page 2)
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(should (equal (buffer-string) "baz"))
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(narrow-to-page -1)
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(should (equal (buffer-string) "bar\n"))))
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(ert-deftest page-tests-count-lines-page ()
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(with-temp-buffer
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(insert "foo\n \nbar\n \nbaz")
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(goto-char (point-min))
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(should (equal (page--count-lines-page) '(1 0 1)))
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(goto-char (point-max))
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(should (equal (page--count-lines-page) '(2 2 0)))))
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(ert-deftest page-tests-what-page ()
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(with-temp-buffer
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(insert "foo\n \nbar\n \nbaz")
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(goto-char (point-min))
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(should (equal (page--what-page) '(1 1)))
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(forward-page)
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(should (equal (page--what-page) '(2 2)))
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(forward-page)
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(should (equal (page--what-page) '(3 4)))))
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;;; page-tests.el ends here
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