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| | ;;; page-tests.el --- Tests for page.el -*- lexical-binding: t; -*-
;; Copyright (C) 2019 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 'page)
(defvar page-tests-page-1 "Page 1/3"
"Example text used to test page.el.")
(defvar page-tests-page-2 "\nPage 2/3"
"Example text used to test page.el.")
(defvar page-tests-page-3 "\nPage 3/3\nLast line"
"Example text used to test page.el.")
(defvar page-tests-break "\n\f"
"Page break used to test page.el.")
(defvar page-tests-example-text
(concat page-tests-page-1 page-tests-break
page-tests-page-2 page-tests-break
page-tests-page-3)
"Example text used to test page.el.")
(ert-deftest page-tests-forward-page ()
(with-temp-buffer
(insert page-tests-example-text)
(goto-char (point-min))
(forward-page)
(should (looking-at page-tests-page-2))
(forward-page)
(should (looking-at page-tests-page-3))
(forward-page)
(should (equal (point) (point-max)))))
(ert-deftest page-tests-backward-page ()
(with-temp-buffer
(insert page-tests-example-text)
(goto-char (point-max))
(backward-page)
(should (looking-at page-tests-page-3))
(backward-page)
(should (looking-at page-tests-page-2))
(backward-page)
(should (looking-at page-tests-page-1))
(should (equal (point) (point-min)))))
(ert-deftest page-tests-mark-page ()
(with-temp-buffer
(insert page-tests-example-text)
(goto-char (point-min))
(mark-page)
(should (looking-at page-tests-page-1))
(should mark-active)
(should (equal (mark) 11))))
(ert-deftest page-tests-narrow-to-page ()
(with-temp-buffer
(insert page-tests-example-text)
(goto-char (point-min))
(narrow-to-page)
(should (equal (buffer-string)
(concat page-tests-page-1 "\n")))))
(ert-deftest page-tests-count-lines-page ()
(with-temp-buffer
(insert page-tests-example-text)
(goto-char (point-min))
(should (equal (count-lines-page) "Page has 1 lines (0 + 1)"))
(goto-char (point-max))
(should (equal (count-lines-page) "Page has 3 lines (3 + 0)"))))
(ert-deftest page-tests-what-page ()
(with-temp-buffer
(insert page-tests-example-text)
(goto-char (point-min))
(should (equal (what-page) "Page 1, line 1"))
(forward-page)
(should (equal (what-page) "Page 2, line 2"))
(forward-page)
(should (equal (what-page) "Page 3, line 4"))))
(provide 'page-tests)
;;; page-tests.el ends here
|