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-;;; char-fold-tests.el --- Tests for char-fold.el -*- lexical-binding: t; -*-
-
-;; Copyright (C) 2013-2016 Free Software Foundation, Inc.
-
-;; Author: Artur Malabarba <bruce.connor.am@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/>.
-
-;;; Code:
-
-(require 'ert)
-(require 'char-fold)
-
-(defun char-fold--random-word (n)
- (mapconcat (lambda (_) (string (+ 9 (random 117))))
- (make-list n nil) ""))
-
-(defun char-fold--test-search-with-contents (contents string)
- (with-temp-buffer
- (insert contents)
- (goto-char (point-min))
- (should (search-forward-regexp (char-fold-to-regexp string) nil 'noerror))
- (goto-char (point-min))
- (should (char-fold-search-forward string nil 'noerror))
- (should (char-fold-search-backward string nil 'noerror))))
-
-
-(ert-deftest char-fold--test-consistency ()
- (dotimes (n 30)
- (let ((w (char-fold--random-word n)))
- ;; A folded string should always match the original string.
- (char-fold--test-search-with-contents w w))))
-
-(ert-deftest char-fold--test-lax-whitespace ()
- (dotimes (n 40)
- (let ((w1 (char-fold--random-word n))
- (w2 (char-fold--random-word n))
- (search-spaces-regexp "\\s-+"))
- (char-fold--test-search-with-contents
- (concat w1 "\s\n\s\t\f\t\n\r\t" w2)
- (concat w1 " " w2))
- (char-fold--test-search-with-contents
- (concat w1 "\s\n\s\t\f\t\n\r\t" w2)
- (concat w1 (make-string 10 ?\s) w2)))))
-
-(defun char-fold--test-match-exactly (string &rest strings-to-match)
- (let ((re (concat "\\`" (char-fold-to-regexp string) "\\'")))
- (dolist (it strings-to-match)
- (should (string-match re it)))
- ;; Case folding
- (let ((case-fold-search t))
- (dolist (it strings-to-match)
- (should (string-match (upcase re) (downcase it)))
- (should (string-match (downcase re) (upcase it)))))))
-
-(ert-deftest char-fold--test-some-defaults ()
- (dolist (it '(("ffl" . "ffl") ("ffi" . "ffi")
- ("fi" . "fi") ("ff" . "ff")
- ("ä" . "ä")))
- (char-fold--test-search-with-contents (cdr it) (car it))
- (let ((multi (char-table-extra-slot char-fold-table 0))
- (char-fold-table (make-char-table 'char-fold-table)))
- (set-char-table-extra-slot char-fold-table 0 multi)
- (char-fold--test-match-exactly (car it) (cdr it)))))
-
-(ert-deftest char-fold--test-fold-to-regexp ()
- (let ((char-fold-table (make-char-table 'char-fold-table))
- (multi (make-char-table 'char-fold-table)))
- (set-char-table-extra-slot char-fold-table 0 multi)
- (aset char-fold-table ?a "xx")
- (aset char-fold-table ?1 "44")
- (aset char-fold-table ?\s "-!-")
- (char-fold--test-match-exactly "a1a1" "xx44xx44")
- (char-fold--test-match-exactly "a1 a 1" "xx44-!--!-xx-!-44")
- (aset multi ?a '(("1" . "99")
- ("2" . "88")
- ("12" . "77")))
- (char-fold--test-match-exactly "a" "xx")
- (char-fold--test-match-exactly "a1" "xx44" "99")
- (char-fold--test-match-exactly "a12" "77" "xx442" "992")
- (char-fold--test-match-exactly "a2" "88")
- (aset multi ?1 '(("2" . "yy")))
- (char-fold--test-match-exactly "a1" "xx44" "99")
- (char-fold--test-match-exactly "a12" "77" "xx442" "992")
- ;; Support for this case is disabled. See function definition or:
- ;; https://lists.gnu.org/archive/html/emacs-devel/2015-11/msg02562.html
- ;; (char-fold--test-match-exactly "a12" "xxyy")
- ))
-
-(ert-deftest char-fold--speed-test ()
- (dolist (string (append '("tty-set-up-initial-frame-face"
- "tty-set-up-initial-frame-face-frame-faceframe-faceframe-faceframe-face")
- (mapcar #'char-fold--random-word '(10 50 100
- 50 100))))
- (message "Testing %s" string)
- ;; Make sure we didn't just fallback on the trivial search.
- (should-not (string= (regexp-quote string)
- (char-fold-to-regexp string)))
- (with-temp-buffer
- (save-excursion (insert string))
- (let ((time (time-to-seconds (current-time))))
- ;; Our initial implementation of case-folding in char-folding
- ;; created a lot of redundant paths in the regexp. Because of
- ;; that, if a really long string "almost" matches, the regexp
- ;; engine took a long time to realize that it doesn't match.
- (should-not (char-fold-search-forward (concat string "c") nil 'noerror))
- ;; Ensure it took less than a second.
- (should (< (- (time-to-seconds (current-time))
- time)
- 1))))))
-
-(provide 'char-fold-tests)
-;;; char-fold-tests.el ends here