1 ;; Copyright (C) 1999 Free Software Foundation, Inc.
3 ;; Author: Hrvoje Niksic <hniksic@srce.hr>
4 ;; Maintainer: Hrvoje Niksic <hniksic@srce.hr>
8 ;; This file is part of SXEmacs.
10 ;; SXEmacs is free software: you can redistribute it and/or modify it
11 ;; under the terms of the GNU General Public License as published by the
12 ;; Free Software Foundation, either version 3 of the License, or (at your
13 ;; option) any later version.
15 ;; SXEmacs is distributed in the hope that it will be
16 ;; useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 ;; General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with this program. If not, see <http://www.gnu.org/licenses/>.
23 ;;; Synched up with: Not in FSF.
27 ;; Test base64 functions.
28 ;; See test-harness.el for instructions on how to run these tests.
32 (require 'test-harness)
35 (when (and (boundp 'load-file-name) (stringp load-file-name))
36 (push (file-name-directory load-file-name) load-path))
37 (require 'test-harness))))
39 ;; We need to test the buffer and string functions. We do it by
40 ;; testing them in various circumstances, asserting the same result,
41 ;; and returning that result.
43 (defvar bt-test-buffer (get-buffer-create " *base64-workhorse*"))
45 (defun bt-base64-encode-string (string &optional no-line-break)
46 (let ((string-result (base64-encode-string string no-line-break))
48 (with-current-buffer bt-test-buffer
52 (setq length (base64-encode-region (point-min) (point-max) no-line-break))
53 (Assert (eq length (- (point-max) (point-min))))
54 (Assert-Equal (buffer-string) string-result)
57 (insert "random junk........\0\0';'eqwrkw[erpqf")
58 (let ((p1 (point)) p2)
60 (setq p2 (point-marker))
61 (insert "...more random junk.q,f3/.qrm314.r,m2typ' 2436T@W$^@$#^T@")
62 (setq length (base64-encode-region p1 p2 no-line-break))
63 (Assert (eq length (- p2 p1)))
64 (Assert-Equal (buffer-substring p1 p2) string-result)))
67 (defun bt-base64-decode-string (string)
68 (let ((string-result (base64-decode-string string))
70 (with-current-buffer bt-test-buffer
74 (setq length (base64-decode-region (point-min) (point-max)))
76 (Assert (eq length (- (point-max) (point-min))))
77 (Assert-Equal (buffer-string) string-result))
79 (Assert (null length))
80 ;; The buffer should not have been modified.
81 (Assert-Equal (buffer-string) string)))
84 (insert "random junk........\0\0';'eqwrkw[erpqf")
85 (let ((p1 (point)) p2)
87 (setq p2 (point-marker))
88 (insert "...more random junk.q,f3/.qrm314.\0\0r,m2typ' 2436T@W$^@$#T@")
89 (setq length (base64-decode-region p1 p2))
91 (Assert (eq length (- p2 p1)))
92 (Assert-Equal (buffer-substring p1 p2) string-result))
94 (Assert (null length))
95 ;; The buffer should not have been modified.
96 (Assert-Equal (buffer-substring p1 p2) string)))))
99 (defun bt-remove-newlines (str)
100 (apply #'string (delete ?\n (mapcar #'identity str))))
102 (defconst bt-allchars
103 (let ((str (make-string 256 ?\0)))
105 (aset str i (int-char i)))
108 (defconst bt-test-strings
111 ("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
112 "QUJDREVGR0hJSktMTU5PUFFSU1RVVldYWVphYmNkZWZnaGlqa2xtbm9wcXJzdHV2d3h5ejAx
115 "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1
116 Njc4OTo7PD0+P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWpr
117 bG1ub3BxcnN0dXZ3eHl6e3x9fn+AgYKDhIWGh4iJiouMjY6PkJGSk5SVlpeYmZqbnJ2en6Ch
118 oqOkpaanqKmqq6ytrq+wsbKztLW2t7i5uru8vb6/wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX
119 2Nna29zd3t/g4eLj5OXm5+jp6uvs7e7v8PHy8/T19vf4+fr7/P3+/w==")
122 ;;-----------------------------------------------------
124 ;;-----------------------------------------------------
126 (loop for (raw encoded) in bt-test-strings do
127 (Assert-Equal (bt-base64-encode-string raw) encoded)
128 ;; test the NO-LINE-BREAK flag
129 (Assert-Equal (bt-base64-encode-string raw t) (bt-remove-newlines encoded)))
131 ;; When Mule is around, Lisp programmers should make sure that the
132 ;; buffer contains only characters whose `char-int' is in the [0, 256)
133 ;; range. If this condition is not satisfied for any character, an
134 ;; error is signaled.
135 (when (featurep 'mule)
136 ;; #### remove subtraction of 128 -- no longer needed with make-char
138 (let* ((mule-string (format "Hrvoje Nik%ci%c"
139 ;; scaron == 185 in Latin 2
140 (make-char 'latin-iso8859-2 (- 185 128))
141 ;; cacute == 230 in Latin 2
142 (make-char 'latin-iso8859-2 (- 230 128)))))
143 (Check-Error-Message error "Non-ascii character in base64 input"
144 (bt-base64-encode-string mule-string))))
146 ;;-----------------------------------------------------
148 ;;-----------------------------------------------------
150 (loop for (raw encoded) in bt-test-strings do
151 (Assert-Equal (bt-base64-decode-string encoded) raw)
152 (Assert-Equal (bt-base64-decode-string (bt-remove-newlines encoded)) raw))
155 (dolist (str `("foo" "AAC" "foo\0bar" "====" "Zm=9v" ,bt-allchars))
156 (Check-Error error (base64-decode-string str)))
158 ;; base64-decode-string should ignore non-base64 characters anywhere
159 ;; in the string. We test this in the cheesiest manner possible, by
160 ;; inserting non-base64 chars at the beginning, at the end, and in the
161 ;; middle of the string.
163 (defconst bt-base64-chars '(?A ?B ?C ?D ?E ?F ?G ?H ?I ?J
164 ;; sometimes I hate Emacs indentation.
165 ?K ?L ?M ?N ?O ?P ?Q ?R ?S ?T
166 ?U ?V ?W ?X ?Y ?Z ?a ?b ?c ?d
167 ?e ?f ?g ?h ?i ?j ?k ?l ?m ?n
168 ?o ?p ?q ?r ?s ?t ?u ?v ?w ?x
169 ?y ?z ?0 ?1 ?2 ?3 ?4 ?5 ?6 ?7
172 (defconst bt-nonbase64-chars (set-difference (mapcar #'identity bt-allchars)
175 (loop for (raw encoded) in bt-test-strings do
176 (unless (equal raw "")
177 (let* ((middlepos (/ (1+ (length encoded)) 2))
178 (left (substring encoded 0 middlepos))
179 (right (substring encoded middlepos)))
180 ;; Whitespace at the beginning, end, and middle.
181 (let ((mangled (concat bt-nonbase64-chars left bt-nonbase64-chars right
182 bt-nonbase64-chars)))
183 (Assert-Equal (bt-base64-decode-string mangled) raw))
185 ;; Whitespace between every char.
186 (let ((mangled (concat bt-nonbase64-chars
187 ;; ENCODED with bt-nonbase64-chars
188 ;; between every character.
189 (mapconcat #'char-to-string encoded
190 (apply #'string bt-nonbase64-chars))
191 bt-nonbase64-chars)))
192 (Assert-Equal (bt-base64-decode-string mangled) raw)))))
194 ;;-----------------------------------------------------
196 ;;-----------------------------------------------------
198 ;; The whole point of base64 is to ensure that an arbitrary sequence
199 ;; of bytes passes through gateway hellfire unscathed, protected by
200 ;; the asbestos suit of base64. Here we test that
201 ;; (base64-decode-string (base64-decode-string FOO)) equals FOO for
202 ;; any FOO we can think of. The following stunts stress-test
203 ;; practically all aspects of the encoding and decoding process.
205 (loop for (raw ignored) in bt-test-strings do
206 (Assert-Equal (bt-base64-decode-string
207 (bt-base64-encode-string raw))
209 (Assert-Equal (bt-base64-decode-string
210 (bt-base64-decode-string
211 (bt-base64-encode-string
212 (bt-base64-encode-string raw))))
214 (Assert-Equal (bt-base64-decode-string
215 (bt-base64-decode-string
216 (bt-base64-decode-string
217 (bt-base64-encode-string
218 (bt-base64-encode-string
219 (bt-base64-encode-string raw))))))
221 (Assert-Equal (bt-base64-decode-string
222 (bt-base64-decode-string
223 (bt-base64-decode-string
224 (bt-base64-decode-string
225 (bt-base64-encode-string
226 (bt-base64-encode-string
227 (bt-base64-encode-string
228 (bt-base64-encode-string raw))))))))
230 (Assert-Equal (bt-base64-decode-string
231 (bt-base64-decode-string
232 (bt-base64-decode-string
233 (bt-base64-decode-string
234 (bt-base64-decode-string
235 (bt-base64-encode-string
236 (bt-base64-encode-string
237 (bt-base64-encode-string
238 (bt-base64-encode-string
239 (bt-base64-encode-string raw))))))))))