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+;;;  endec.lisp --- test suite for the MIME encoder/decoder functions
+
+;;;  Copyright (C) 2006, 2007, 2009, 2010 by Walter C. Pelissero
+;;;  Copyright (C) 2022 by The TVL Authors
+
+;;;  Author: Walter C. Pelissero <walter@pelissero.de>
+;;;  Project: mime4cl
+
+;;; This library is free software; you can redistribute it and/or
+;;; modify it under the terms of the GNU Lesser General Public License
+;;; as published by the Free Software Foundation; either version 2.1
+;;; of the License, or (at your option) any later version.
+;;; This library 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
+;;; Lesser General Public License for more details.
+;;; You should have received a copy of the GNU Lesser General Public
+;;; License along with this library; if not, write to the Free
+;;; Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+;;; 02111-1307 USA
+
+(in-package :mime4cl-tests)
+
+(deftest quoted-printable.1
+    (encode-quoted-printable-sequence (map '(vector (unsigned-byte 8)) #'char-code
+                                           "Français, Español, böse, skøl"))
+  "Fran=E7ais, Espa=F1ol, b=F6se, sk=F8l")
+
+(deftest quoted-printable.2
+    (encode-quoted-printable-sequence (map '(vector (unsigned-byte 8)) #'char-code
+                                           "Français, Español, böse, skøl")
+                                      :start 10 :end 17)
+  "Espa=F1ol")
+
+(deftest quoted-printable.3
+    (map 'string #'code-char
+         (decode-quoted-printable-string "Fran=E7ais, Espa=F1ol, b=F6se, sk=F8l"))
+  "Français, Español, böse, skøl")
+
+(deftest quoted-printable.4
+    (map 'string #'code-char
+         (decode-quoted-printable-string "Fran=E7ais, Espa=F1ol, b=F6se, sk=F8l"
+                                         :start 12 :end 21))
+  "Español")
+
+(deftest quoted-printable.5
+    (map 'string #'code-char
+         (decode-quoted-printable-string "this = wrong"))
+  "this = wrong")
+
+(deftest quoted-printable.6
+    (map 'string #'code-char
+         (decode-quoted-printable-string "this is wrong="))
+  "this is wrong=")
+
+(deftest quoted-printable.7
+    (map 'string #'code-char
+         (decode-quoted-printable-string "this is wrong=1"))
+  "this is wrong=1")
+
+(deftest quoted-printable.8
+    (encode-quoted-printable-sequence (map '(vector (unsigned-byte 8)) #'char-code
+                                           "x = x + 1"))
+  "x =3D x + 1")
+
+(deftest quoted-printable.9
+    (encode-quoted-printable-sequence (map '(vector (unsigned-byte 8)) #'char-code
+                                           "x = x + 1   "))
+  "x =3D x + 1  =20")
+
+(deftest quoted-printable.10
+    (encode-quoted-printable-sequence (map '(vector (unsigned-byte 8)) #'char-code
+                                           "this string is very very very very very very very very very very very very very very very very very very very very long"))
+  "this string is very very very very very very very very very very very ve=
+ry very very very very very very very very long")
+
+(deftest quoted-printable.11
+    (encode-quoted-printable-sequence (map '(vector (unsigned-byte 8)) #'char-code
+                                           "this string is very very                                                                                  very very long"))
+  "this string is very very                                                =
+                                  very very long")
+
+(deftest quoted-printable.12
+    (encode-quoted-printable-sequence (map '(vector (unsigned-byte 8)) #'char-code
+                                           "please read the next   
+line"))
+  "please read the next  =20
+line")
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(deftest base64.1
+    (let ((*base64-line-length* nil))
+      (encode-base64-sequence (map '(vector (unsigned-byte 8)) #'char-code
+                                   "Some random string.")))
+  "U29tZSByYW5kb20gc3RyaW5nLg==")
+
+(deftest base64.2
+    (let ((*base64-line-length* nil))
+      (encode-base64-sequence (map '(vector (unsigned-byte 8)) #'char-code
+                                   "Some random string.") :start 5 :end 11))
+  "cmFuZG9t")
+
+(deftest base64.3
+    (map 'string #'code-char
+         (qbase64:decode-string "U29tZSByYW5kb20gc3RyaW5nLg=="))
+  "Some random string.")
+
+(deftest base64.4
+    (map 'string #'code-char
+         (qbase64:decode-string "U29tZSByYW5kb20gc3RyaW5nLg=="))
+  "Some random string.")
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(deftest RFC2047.1
+    (parse-RFC2047-text "foo bar")
+  ("foo bar"))
+
+;; from RFC2047 section 8
+(deftest RFC2047.2
+    (decode-RFC2047 "=?US-ASCII?Q?Keith_Moore?= <moore@cs.utk.edu>")
+  "Keith Moore <moore@cs.utk.edu>")
+
+;; from RFC2047 section 8
+(deftest RFC2047.3
+    (decode-RFC2047 "=?ISO-8859-1?Q?Olle_J=E4rnefors?=")
+  "Olle Järnefors")
+
+;; from RFC2047 section 8
+(deftest RFC2047.4
+    (decode-RFC2047 "Nathaniel Borenstein <nsb@thumper.bellcore.com> (=?iso-8859-8?b?7eXs+SDv4SDp7Oj08A==?=)")
+  "Nathaniel Borenstein <nsb@thumper.bellcore.com> (םולש ןב ילטפנ)")
+
+;; from RFC2047 section 8
+(deftest RFC2047.5
+  (decode-RFC2047 "=?ISO-8859-1?Q?Keld_J=F8rn_Simonsen?= <keld@dkuug.dk>")
+  "Keld Jørn Simonsen <keld@dkuug.dk>")
+
+(defun perftest-encoder (encoder-class &optional (megs 100))
+  (declare (optimize (speed 3) (debug 0) (safety 0))
+           (type fixnum megs))
+  (with-open-file (in #P"/dev/random" :element-type '(unsigned-byte 8))
+    (let* ((meg (* 1024 1024))
+           (buffer (make-sequence '(vector (unsigned-byte 8)) meg))
+           (encoder (make-instance encoder-class
+                                   :output-function #'(lambda (c) (declare (ignore c))))))
+      (declare (type fixnum meg))
+      (time
+       (progn
+         (dotimes (x megs)
+           (read-sequence buffer in)
+           (dotimes (i meg)
+             (mime4cl:encoder-write-byte encoder (aref buffer i))))
+         (mime4cl:encoder-finish-output encoder))))))
+
+(defun perftest-decoder (decoder-class &optional (megs 100))
+  (declare (optimize (speed 3) (debug 0) (safety 0))
+           (type fixnum megs))
+  (with-open-file (in #P"/dev/random" :element-type '(unsigned-byte 8))
+    (let ((*tmp-file-defaults* (make-pathname :defaults #.(or *load-pathname* *compile-file-pathname*)
+                                                   :type "encoded-data")))
+      (with-temp-file (tmp nil :direction :io)
+        (let* ((meg (* 1024 1024))
+               (buffer (make-sequence '(vector (unsigned-byte 8)) meg))
+               (encoder-class (ecase decoder-class
+                                (mime4cl:quoted-printable-decoder 'mime4cl:quoted-printable-encoder)))
+               (encoder (make-instance encoder-class
+                                       :output-function #'(lambda (c)
+                                                            (write-char c tmp))))
+               (decoder (make-instance decoder-class
+                                       :input-function #'(lambda ()
+                                                           (read-char tmp nil)))))
+          (declare (type fixnum meg))
+          (dotimes (x megs)
+            (read-sequence buffer in)
+            (dotimes (i meg)
+              (mime4cl:encoder-write-byte encoder (aref buffer i))))
+          (mime4cl:encoder-finish-output encoder)
+          (file-position tmp 0)
+          (time
+           (loop
+              for b = (mime4cl:decoder-read-byte decoder)
+              while b)))))))