* test/automated/character-fold-tests.el: New file

diff --git a/test/automated/character-fold-tests.el b/test/automated/character-fold-tests.el
new file mode 100644 (file)
index 0000000..2b1a15c
--- /dev/null
+++ b/test/automated/character-fold-tests.el
@@ -0,0 +1,58 @@
+;;; character-fold-tests.el --- Tests for character-fold.el  -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2013-2015 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 'character-fold)
+
+(defun character-fold--random-word (n)
+  (mapconcat (lambda (_) (string (+ 9 (random 117))))
+             (make-list n nil) ""))
+
+(defun character-fold--test-search-with-contents (contents string)
+  (with-temp-buffer
+    (insert contents)
+    (goto-char (point-min))
+    (should (search-forward-regexp (character-fold-to-regexp string) nil 'noerror))
+    (goto-char (point-min))
+    (should (character-fold-search-forward string nil 'noerror))
+    (should (character-fold-search-backward string nil 'noerror))))
+
+\f
+(ert-deftest character-fold--test-consistency ()
+  (dotimes (n 100)
+    (let ((w (character-fold--random-word n)))
+      ;; A folded string should always match the original string.
+      (character-fold--test-search-with-contents w w))))
+
+(ert-deftest character-fold--test-lax-whitespace ()
+  (dotimes (n 100)
+    (let ((w1 (character-fold--random-word n))
+          (w2 (character-fold--random-word n))
+          (search-spaces-regexp "\\s-+"))
+      (character-fold--test-search-with-contents
+       (concat w1 "\s\n\s\t\f\t\n\r\t" w2)
+       (concat w1 " " w2))
+      (character-fold--test-search-with-contents
+       (concat w1 "\s\n\s\t\f\t\n\r\t" w2)
+       (concat w1 (make-string 90 ?\s) w2)))))
+
+(provide 'character-fold-tests)
+;;; character-fold-tests.el ends here