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|
;;; undo-tests.el --- Tests of primitive-undo
;; Copyright (C) 2012-2014 Free Software Foundation, Inc.
;; Author: Aaron S. Hawley <aaron.s.hawley@gmail.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/'.
;;; Commentary:
;; Profiling when the code was translate from C to Lisp on 2012-12-24.
;;; C
;; (elp-instrument-function 'primitive-undo)
;; (load-file "undo-test.elc")
;; (benchmark 100 '(let ((undo-test5-error nil)) (undo-test-all)))
;; Elapsed time: 305.218000s (104.841000s in 14804 GCs)
;; M-x elp-results
;; Function Name Call Count Elapsed Time Average Time
;; primitive-undo 2600 3.4889999999 0.0013419230
;;; Lisp
;; (load-file "primundo.elc")
;; (elp-instrument-function 'primitive-undo)
;; (benchmark 100 '(undo-test-all))
;; Elapsed time: 295.974000s (104.582000s in 14704 GCs)
;; M-x elp-results
;; Function Name Call Count Elapsed Time Average Time
;; primitive-undo 2700 3.6869999999 0.0013655555
;;; Code:
(require 'ert)
(ert-deftest undo-test0 ()
"Test basics of \\[undo]."
(with-temp-buffer
(buffer-enable-undo)
(condition-case err
(undo)
(error
(unless (string= "No further undo information"
(cadr err))
(error err))))
(undo-boundary)
(insert "This")
(undo-boundary)
(erase-buffer)
(undo-boundary)
(insert "That")
(undo-boundary)
(forward-word -1)
(undo-boundary)
(insert "With ")
(undo-boundary)
(forward-word -1)
(undo-boundary)
(kill-word 1)
(undo-boundary)
(put-text-property (point-min) (point-max) 'face 'bold)
(undo-boundary)
(remove-text-properties (point-min) (point-max) '(face default))
(undo-boundary)
(set-buffer-multibyte (not enable-multibyte-characters))
(undo-boundary)
(undo)
(should
(equal (should-error (undo-more nil))
'(wrong-type-argument number-or-marker-p nil)))
(undo-more 7)
(should (string-equal "" (buffer-string)))))
(ert-deftest undo-test1 ()
"Test undo of \\[undo] command (redo)."
(with-temp-buffer
(buffer-enable-undo)
(undo-boundary)
(insert "This")
(undo-boundary)
(erase-buffer)
(undo-boundary)
(insert "That")
(undo-boundary)
(forward-word -1)
(undo-boundary)
(insert "With ")
(undo-boundary)
(forward-word -1)
(undo-boundary)
(kill-word 1)
(undo-boundary)
(facemenu-add-face 'bold (point-min) (point-max))
(undo-boundary)
(set-buffer-multibyte (not enable-multibyte-characters))
(undo-boundary)
(should
(string-equal (buffer-string)
(progn
(undo)
(undo-more 4)
(undo)
;(undo-more -4)
(buffer-string))))))
(ert-deftest undo-test2 ()
"Test basic redoing with \\[undo] command."
(with-temp-buffer
(buffer-enable-undo)
(undo-boundary)
(insert "One")
(undo-boundary)
(insert " Zero")
(undo-boundary)
(push-mark nil t)
(delete-region (save-excursion
(forward-word -1)
(point)) (point))
(undo-boundary)
(beginning-of-line)
(insert "Zero")
(undo-boundary)
(undo)
(should
(string-equal (buffer-string)
(progn
(undo-more 2)
(undo)
(buffer-string))))))
(ert-deftest undo-test4 ()
"Test \\[undo] of \\[flush-lines]."
(with-temp-buffer
(buffer-enable-undo)
(dotimes (i 1048576)
(if (zerop (% i 2))
(insert "Evenses")
(insert "Oddses")))
(undo-boundary)
(should
;; Avoid string-equal because ERT will save the `buffer-string'
;; to the explanation. Using `not' will record nil or non-nil.
(not
(null
(string-equal (buffer-string)
(progn
(flush-lines "oddses" (point-min) (point-max))
(undo-boundary)
(undo)
(undo)
(buffer-string))))))))
(ert-deftest undo-test5 ()
"Test basic redoing with \\[undo] command."
(with-temp-buffer
(buffer-enable-undo)
(undo-boundary)
(insert "AYE")
(undo-boundary)
(insert " BEE")
(undo-boundary)
(setq buffer-undo-list (cons '(0.0 bogus) buffer-undo-list))
(push-mark nil t)
(delete-region (save-excursion
(forward-word -1)
(point)) (point))
(undo-boundary)
(beginning-of-line)
(insert "CEE")
(undo-boundary)
(undo)
(setq buffer-undo-list (cons "bogus" buffer-undo-list))
(should
(string-equal
(buffer-string)
(progn
(if (and (boundp 'undo-test5-error) (not undo-test5-error))
(progn
(should (null (undo-more 2)))
(should (undo)))
;; Errors are generated by new Lisp version of
;; `primitive-undo' not by built-in C version.
(should
(equal (should-error (undo-more 2))
'(error "Unrecognized entry in undo list (0.0 bogus)")))
(should
(equal (should-error (undo))
'(error "Unrecognized entry in undo list \"bogus\""))))
(buffer-string))))))
;; http://debbugs.gnu.org/14824
(ert-deftest undo-test-buffer-modified ()
"Test undoing marks buffer unmodified."
(with-temp-buffer
(buffer-enable-undo)
(insert "1")
(undo-boundary)
(set-buffer-modified-p nil)
(insert "2")
(undo)
(should-not (buffer-modified-p))))
(ert-deftest undo-test-file-modified ()
"Test undoing marks buffer visiting file unmodified."
(let ((tempfile (make-temp-file "undo-test")))
(unwind-protect
(progn
(with-current-buffer (find-file-noselect tempfile)
(insert "1")
(undo-boundary)
(set-buffer-modified-p nil)
(insert "2")
(undo)
(should-not (buffer-modified-p))))
(delete-file tempfile))))
(defun undo-test-all (&optional interactive)
"Run all tests for \\[undo]."
(interactive "p")
(if interactive
(ert-run-tests-interactively "^undo-")
(ert-run-tests-batch "^undo-")))
(provide 'undo-tests)
;;; undo-tests.el ends here
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