--- /dev/null
+;;; occur-tests.el --- Test suite for occur.
+
+;; Copyright (C) 2010-2011 Free Software Foundation, Inc.
+
+;; Author: Juri Linkov <juri@jurta.org>
+;; Keywords: matching, internal
+
+;; 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 <http://www.gnu.org/licenses/>.
+
+;;; Code:
+
+(require 'ert)
+
+(defconst occur-tests
+ '(
+ ;; * Test one-line matches (at bob, eob, bol, eol).
+ ("x" 0 "\
+xa
+b
+cx
+xd
+xex
+fx
+" "\
+5 matches for \"x\" in buffer: *temp*<2>
+ 1:xa
+ 3:cx
+ 4:xd
+ 5:xex
+ 6:fx
+")
+ ;; * Test multi-line matches, this is the first test from
+ ;; http://lists.gnu.org/archive/html/emacs-devel/2005-06/msg01008.html
+ ;; where numbers are replaced with letters.
+ ("a\na" 0 "\
+a
+a
+a
+a
+a
+" "\
+2 matches for \"a^Ja\" in buffer: *temp*<2>
+ 1:a
+ :a
+ 3:a
+ :a
+")
+ ;; * Test multi-line matches, this is the second test from
+ ;; http://lists.gnu.org/archive/html/emacs-devel/2005-06/msg01008.html
+ ;; where numbers are replaced with letters.
+ ("a\nb" 0 "\
+a
+b
+c
+a
+b
+" "\
+2 matches for \"a^Jb\" in buffer: *temp*<2>
+ 1:a
+ :b
+ 4:a
+ :b
+")
+ ;; * Test line numbers for multi-line matches with empty last match line.
+ ("a\n" 0 "\
+a
+
+c
+a
+
+" "\
+2 matches for \"a^J\" in buffer: *temp*<2>
+ 1:a
+ :
+ 4:a
+ :
+")
+ ;; * Test multi-line matches with 3 match lines.
+ ("x\n.x\n" 0 "\
+ax
+bx
+c
+d
+ex
+fx
+" "\
+2 matches for \"x^J.x^J\" in buffer: *temp*<2>
+ 1:ax
+ :bx
+ :c
+ 5:ex
+ :fx
+ :
+")
+ ;; * Test non-overlapping context lines with matches at bob/eob.
+ ("x" 1 "\
+ax
+b
+c
+d
+ex
+f
+g
+hx
+" "\
+3 matches for \"x\" in buffer: *temp*<2>
+ 1:ax
+ :b
+-------
+ :d
+ 5:ex
+ :f
+-------
+ :g
+ 8:hx
+")
+ ;; * Test non-overlapping context lines with matches not at bob/eob.
+ ("x" 1 "\
+a
+bx
+c
+d
+ex
+f
+" "\
+2 matches for \"x\" in buffer: *temp*<2>
+ :a
+ 2:bx
+ :c
+-------
+ :d
+ 5:ex
+ :f
+")
+ ;; * Test overlapping context lines with matches at bob/eob.
+ ("x" 2 "\
+ax
+bx
+c
+dx
+e
+f
+gx
+h
+i
+j
+kx
+" "\
+5 matches for \"x\" in buffer: *temp*<2>
+ 1:ax
+ 2:bx
+ :c
+ 4:dx
+ :e
+ :f
+ 7:gx
+ :h
+ :i
+ :j
+ 11:kx
+")
+ ;; * Test overlapping context lines with matches not at bob/eob.
+ ("x" 2 "\
+a
+b
+cx
+d
+e
+f
+gx
+h
+i
+" "\
+2 matches for \"x\" in buffer: *temp*<2>
+ :a
+ :b
+ 3:cx
+ :d
+ :e
+ :f
+ 7:gx
+ :h
+ :i
+")
+ ;; * Test overlapping context lines with empty first and last line..
+ ("x" 2 "\
+
+b
+cx
+d
+e
+f
+gx
+h
+
+" "\
+2 matches for \"x\" in buffer: *temp*<2>
+ :
+ :b
+ 3:cx
+ :d
+ :e
+ :f
+ 7:gx
+ :h
+ :
+")
+ ;; * Test multi-line overlapping context lines.
+ ("x\n.x" 2 "\
+ax
+bx
+c
+d
+ex
+fx
+g
+h
+i
+jx
+kx
+" "\
+3 matches for \"x^J.x\" in buffer: *temp*<2>
+ 1:ax
+ :bx
+ :c
+ :d
+ 5:ex
+ :fx
+ :g
+ :h
+ :i
+ 10:jx
+ :kx
+")
+ ;; * Test multi-line non-overlapping context lines.
+ ("x\n.x" 2 "\
+ax
+bx
+c
+d
+e
+f
+gx
+hx
+" "\
+2 matches for \"x^J.x\" in buffer: *temp*<2>
+ 1:ax
+ :bx
+ :c
+ :d
+-------
+ :e
+ :f
+ 7:gx
+ :hx
+")
+ ;; * Test non-overlapping negative (before-context) lines.
+ ("x" -2 "\
+a
+bx
+c
+d
+e
+fx
+g
+h
+ix
+" "\
+3 matches for \"x\" in buffer: *temp*<2>
+ :a
+ 2:bx
+-------
+ :d
+ :e
+ 6:fx
+-------
+ :g
+ :h
+ 9:ix
+")
+ ;; * Test overlapping negative (before-context) lines.
+ ("x" -3 "\
+a
+bx
+c
+dx
+e
+f
+gx
+h
+" "\
+3 matches for \"x\" in buffer: *temp*<2>
+ :a
+ 2:bx
+ :c
+ 4:dx
+ :e
+ :f
+ 7:gx
+")
+
+)
+ "List of tests for `occur'.
+Each element has the format:
+\(REGEXP NLINES INPUT-BUFFER-STRING OUTPUT-BUFFER-STRING).")
+
+(defun occur-test-case (test)
+ (let ((regexp (nth 0 test))
+ (nlines (nth 1 test))
+ (input-buffer-string (nth 2 test))
+ (output-buffer-string (nth 3 test)))
+ (save-window-excursion
+ (with-temp-buffer
+ (insert input-buffer-string)
+ (occur regexp nlines)
+ (equal output-buffer-string
+ (with-current-buffer "*Occur*"
+ (buffer-string)))))))
+
+(ert-deftest occur-tests ()
+ "Test the functionality of `occur'.
+The test data is in the `occur-tests' constant."
+ (let ((occur-hook nil))
+ (dolist (test occur-tests)
+ (should (occur-test-case test)))))
+
+(provide 'occur-tests)
+
+;;; occur-tests.el ends here