;;;; web-response.test --- HTTP responses       -*- mode: scheme; coding: utf-8; -*-
;;;;
;;;;   Copyright (C) 2010, 2011, 2012, 2014 Free Software Foundation, Inc.
;;;;
;;;; 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 3 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA


(define-module (test-suite web-response)
  #:use-module (web uri)
  #:use-module (web response)
  #:use-module (rnrs bytevectors)
  #:use-module (rnrs io ports)
  #:use-module (srfi srfi-19)
  #:use-module (test-suite lib))


;; The newlines are equivalent to \n. From www.gnu.org.
(define example-1
  "HTTP/1.1 200 OK\r
Date: Wed, 03 Nov 2010 22:27:07 GMT\r
Server: Apache/2.0.55\r
Accept-Ranges: bytes\r
Cache-Control: max-age=543234\r
Expires: Thu, 28 Oct 2010 15:33:13 GMT\r
Vary: Accept-Encoding\r
Content-Encoding: gzip\r
Content-Length: 36\r
Content-Type: text/html; charset=utf-8\r
\r
abcdefghijklmnopqrstuvwxyz0123456789
-> Here is trailing garbage that should be ignored because it is
   beyond Content-Length.")

(define example-2
  "HTTP/1.1 200 OK\r
Transfer-Encoding: chunked\r
Content-Type: text/plain
\r
1c\r
Lorem ipsum dolor sit amet, \r
1d\r
consectetur adipisicing elit,\r
43\r
 sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.\r
0\r\n")

(define (responses-equal? r1 body1 r2 body2)
  (and (equal? (response-version r1) (response-version r2))
       (equal? (response-code r1) (response-code r2))
       (equal? (response-reason-phrase r1) (response-reason-phrase r2))
       (equal? (response-headers r1) (response-headers r2))
       (equal? body1 body2)))

(with-test-prefix "example-1"
  (let ((r #f) (body #f))
    (pass-if "read-response"
      (begin
        (set! r (read-response (open-input-string example-1)))
        (response? r)))

    (pass-if "read-response-body"
      (begin
        (set! body (read-response-body r))
        #t))

    (pass-if-equal '(1 . 1) (response-version r))
    (pass-if-equal 200 (response-code r))
    (pass-if-equal "OK" (response-reason-phrase r))

    (pass-if-equal (string->utf8 "abcdefghijklmnopqrstuvwxyz0123456789")
        body)

    (pass-if-equal "checking all headers"
        `((date . ,(string->date "Wed, 03 Nov 2010 22:27:07 +0000"
                                 "~a, ~d ~b ~Y ~H:~M:~S ~z"))
          (server . "Apache/2.0.55")
          (accept-ranges . (bytes))
          (cache-control . ((max-age . 543234)))
          (expires . ,(string->date "Thu, 28 Oct 2010 15:33:13 GMT +0000"
                                    "~a, ~d ~b ~Y ~H:~M:~S ~z"))
          (vary . (accept-encoding))
          (content-encoding . (gzip))
          (content-length . 36)
          (content-type . (text/html (charset . "utf-8"))))
      (response-headers r))

    (pass-if "write then read"
      (call-with-values
          (lambda ()
            (with-input-from-string
                (with-output-to-string
                  (lambda ()
                    (let ((r (write-response r (current-output-port))))
                      (write-response-body r body))))
              (lambda ()
                (let ((r (read-response (current-input-port))))
                  (values r (read-response-body r))))))
        (lambda (r* body*)
          (responses-equal? r body r* body*))))

    (pass-if-equal "by accessor"
        '(gzip)
      (response-content-encoding r))

    (pass-if-equal "response-body-port"
        `("utf-8" ,body)
      (with-fluids ((%default-port-encoding #f))
        (let* ((r (read-response (open-input-string example-1)))
               (p (response-body-port r)))
          (list (port-encoding p) (get-bytevector-all p)))))))

(with-test-prefix "example-2"
  (let* ((r (read-response (open-input-string example-2)))
         (b (read-response-body r)))
    (pass-if-equal '((chunked))
        (response-transfer-encoding r))
    (pass-if-equal
        (string->utf8
         (string-append
          "Lorem ipsum dolor sit amet, consectetur adipisicing elit,"
          " sed do eiusmod tempor incididunt ut labore et dolore magna aliqua."))
        b)
    (pass-if-equal "response-body-port"
        `("ISO-8859-1" ,(utf8->string b)) ; no `charset', hence ISO-8859-1
      (with-fluids ((%default-port-encoding #f))
        (let* ((r (read-response (open-input-string example-2)))
               (p (response-body-port r)))
          (list (port-encoding p) (get-string-all p)))))))