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1 ;; Copyright (C) 1999 Free Software Foundation, Inc.
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2
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3 ;; Author: Yoshiki Hayashi <t90553@mail.ecc.u-tokyo.ac.jp>
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4 ;; Maintainer: Yoshiki Hayashi <t90553@mail.ecc.u-tokyo.ac.jp>
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5 ;; Created: 1999
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6 ;; Keywords: tests
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7
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8 ;; This file is part of XEmacs.
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9
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10 ;; XEmacs is free software; you can redistribute it and/or modify it
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11 ;; under the terms of the GNU General Public License as published by
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12 ;; the Free Software Foundation; either version 2, or (at your option)
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13 ;; any later version.
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14
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15 ;; XEmacs is distributed in the hope that it will be useful, but
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16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 ;; General Public License for more details.
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19
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20 ;; You should have received a copy of the GNU General Public License
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21 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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22 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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23 ;; 02111-1307, USA.
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24
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25 ;;; Synched up with: Not in FSF.
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26
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27 ;;; Commentary:
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28
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29 ;; Test syntax related functions.
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30 ;; Right now it tests scan_words using forward-word and backward-word.
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31 ;; See test-harness.el for instructions on how to run these tests.
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32
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33 ;;; Notation
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34 ;; W: word constituent character.
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35 ;; NW: non word constituent character.
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36 ;; -!-: current point.
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37 ;; EOB: end of buffer
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38 ;; BOB: beginning of buffer.
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39
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40 ;; Algorithm of scan_words is simple. It just searches SW and then
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41 ;; moves to NW. When with MULE, it also stops at word boundary. Word
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42 ;; boundary is tricky and listing all possible cases will be huge.
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43 ;; Those test are omitted here as it doesn't affect core
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44 ;; functionality.
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45
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46 (defun test-forward-word (string stop)
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47 (goto-char (point-max))
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48 (let ((point (point)))
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49 (insert string)
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50 (goto-char point)
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51 (forward-word 1)
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52 (Assert (eq (point) (+ point stop)))))
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53
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54 (with-temp-buffer
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55 ;; -!- W NW
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56 (test-forward-word "W " 1)
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57 (test-forward-word "WO " 2)
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58 ;; -!- W EOB
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59 (test-forward-word "W" 1)
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60 (test-forward-word "WO" 2)
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61 ;; -!- NW EOB
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62 (test-forward-word " " 1)
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63 (test-forward-word " !" 2)
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64 ;; -!- NW W NW
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65 (test-forward-word " W " 2)
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66 (test-forward-word " WO " 3)
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67 (test-forward-word " !W " 3)
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68 (test-forward-word " !WO " 4)
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69 ;; -!- NW W EOB
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70 (test-forward-word " W" 2)
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71 (test-forward-word " WO" 3)
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72 (test-forward-word " !W" 3)
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73 (test-forward-word " !WO" 4))
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74
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75 (defun test-backward-word (string stop)
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76 (goto-char (point-min))
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77 (insert string)
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78 (let ((point (point)))
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79 (backward-word 1)
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80 (Assert (eq (point) (- point stop)))))
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81
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82 (with-temp-buffer
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83 ;; NW W -!-
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84 (test-backward-word " W" 1)
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85 (test-backward-word " WO" 2)
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86 ;; BOB W -!-
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87 (test-backward-word "W" 1)
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88 (test-backward-word "WO" 2)
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89 ;; BOB NW -!-
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90 ;; -!-NW EOB
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91 (test-backward-word " " 1)
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92 (test-backward-word " !" 2)
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93 ;; NW W NW -!-
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94 (test-backward-word " W " 2)
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95 (test-backward-word " WO " 3)
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96 (test-backward-word " W !" 3)
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97 (test-backward-word " WO !" 4)
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98 ;; BOB W NW -!-
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99 (test-backward-word "W " 2)
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100 (test-backward-word "WO " 3)
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101 (test-backward-word "W !" 3)
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102 (test-backward-word "WO !" 4))
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460
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103
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104 ;; Works like test-forward-word, except for the following:
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105 ;; after <string> is inserted, the syntax-table <apply-syntax>
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106 ;; is applied to position <apply-pos>.
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107 ;; <apply-pos> can be in the form (start . end), or can be a
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108 ;; character position.
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109 (defun test-syntax-table (string apply-pos apply-syntax stop)
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1024
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110 ;; We don't necessarily have syntax-table properties ...
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111 (when (fboundp 'lookup-syntax-properties) ; backwards compatible kludge
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112 ;; ... and they may not be enabled by default if we do.
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113 (setq lookup-syntax-properties t)
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114 (goto-char (point-max))
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115 (unless (consp apply-pos)
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116 (setq apply-pos `(,apply-pos . ,(+ 1 apply-pos))))
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117 (let ((point (point)))
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118 (insert string)
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119 (put-text-property (+ point (car apply-pos)) (+ point (cdr apply-pos))
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120 'syntax-table apply-syntax)
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121 (goto-char point)
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122 (forward-word 1)
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123 (Assert (eq (point) (+ point stop))))))
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460
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124
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125 ;; test syntax-table extents
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126 (with-temp-buffer
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127 ;; Apply punctuation to word
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128 (test-syntax-table "WO" 1 `(,(syntax-string-to-code ".")) 1)
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129 ;; Apply word to punctuation
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130 (test-syntax-table "W." 1 `(,(syntax-string-to-code "w")) 2))
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131
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3880
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132 ;; According to Ralf Angeli in
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133 ;; http://article.gmane.org/gmane.emacs.xemacs.beta/17353:
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134 ;; Using a fresh CVS checkout of XEmacs trunk the following snippet
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135 ;; returns "1" when evaluated whereas it returns "5" in GNU Emacs 21.3,
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136 ;; CVS GNU Emacs and XEmacs 21.4.15.
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137 ;; If `set-syntax-table' is used instead of `with-syntax-table', CVS
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138 ;; XEmacs returns "5" as well, so I suppose that there is a problem in
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139 ;; `with-syntax-table' or a function called by it.
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140
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141 ;; Fixed 2007-03-25 Olivier Galibert <20070324221053.GA48218@dspnet.fr.eu.org>
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142 (with-temp-buffer
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143 (with-syntax-table (make-syntax-table)
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144 (insert "foo bar")
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145 (backward-sexp 1)
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146 (Assert (eql (point) 5))))
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147
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460
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148 ;; Test forward-comment at buffer boundaries
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1024
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149 ;; #### The second Assert fails (once interpreted, once compiled) on 21.4.9
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150 ;; with sjt's version of Andy's syntax-text-property-killer patch.
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460
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151 (with-temp-buffer
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1095
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152 (Skip-Test-Unless (fboundp 'c-mode)
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153 "c-mode unavailable"
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154 "comment and parse-partial-sexp tests"
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973
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155 (c-mode)
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156
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157 (insert "// comment\n")
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158 (forward-comment -2)
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159 (Assert (eq (point) (point-min)))
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460
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160
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973
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161 (let ((point (point)))
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162 (insert "/* comment */")
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163 (goto-char point)
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164 (forward-comment 2)
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165 (Assert (eq (point) (point-max)))
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460
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166
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973
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167 ;; this last used to crash
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168 (parse-partial-sexp point (point-max)))))
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3130
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169
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170 ;; Test backward-up-list
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171 ;; Known-Bug: report = Evgeny Zacjev ca 2005-12-01, confirm = Aidan Kehoe
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172
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173 (with-temp-buffer
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174 ;; We are now using the standard syntax table. Thus there's no need to
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175 ;; worry about a bogus syntax setting, eg, in a Gnus Article buffer the
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176 ;; bug doesn't manifest.
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177
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178 ;; value of point to the immediate left of this character
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179 ;; 0 1 2
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180 ;; 1234 56789 012 34567 890 12 3456 7
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181 (insert "a ( \"b (c\" (\"defg\") \")\") h\n")
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182
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183 ;; #### This test should check *every* position.
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184 (flet ((backward-up-list-moves-point-from-to (start expected-end)
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185 (goto-char start)
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186 (backward-up-list 1)
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187 (= (point) expected-end)))
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188 (Known-Bug-Expect-Failure
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189 ;; Evgeny's case
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190 (Assert (backward-up-list-moves-point-from-to 16 12)))
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191 (Assert (backward-up-list-moves-point-from-to 19 12))
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192 (Assert (backward-up-list-moves-point-from-to 20 3))
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193 (Known-Bug-Expect-Failure
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194 (Assert (backward-up-list-moves-point-from-to 22 3)))
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195 (Known-Bug-Expect-Failure
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196 (Assert (backward-up-list-moves-point-from-to 23 3)))
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197 (Assert (backward-up-list-moves-point-from-to 24 3))
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198 ;; This is maybe a little tricky, since we don't expect the position
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199 ;; check to happen -- so use an illegal expected position
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200 ;; I don't think there's any other way for this to fail that way,
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201 ;; barring hardware error....
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202 (Check-Error-Message syntax-error
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203 "Unbalanced parentheses"
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204 (backward-up-list-moves-point-from-to 25 nil))
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205 ;; special-case check that point didn't move
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206 (Assert (= (point) 25))))
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207
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