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websocket-test.el
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websocket-test.el
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;;; websocket-test.el --- Unit tests for the websocket layer
;; Copyright (c) 2010 Andrew Hyatt
;;
;; Author: Andrew Hyatt <ahyatt at gmail dot com>
;; Maintainer: Andrew Hyatt <ahyatt at gmail dot com>
;;
;; This program 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 2 of the
;; License, or (at your option) any later version.
;;
;; This program 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 this program; if not, write to the Free Software
;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
;; 02110-1301, USA.
;;; Commentary:
;; This defines and runs ert unit tests. You can download ert from:
;; http://github.com/ohler/ert, it also comes with Emacs 24 and above.
(require 'ert)
(require 'websocket)
(eval-when-compile (require 'cl))
(defun websocket-test-get-filtered-response (outputs)
(let* ((packet-data nil)
(websocket
(make-websocket :conn "fake-conn"
:filter (lambda (packet) (push packet packet-data))
:close-callback (lambda (not-called) (assert nil))
:url "ws://foo/bar")))
(dolist (output outputs)
(websocket-outer-filter websocket output))
(nreverse packet-data)))
(ert-deftest websocket-genbytes-length ()
(loop repeat 100
do (should (= (string-bytes (websocket-genbytes)) 16))))
(ert-deftest websocket-calculate-accept ()
;; This example comes straight from RFC 6455
(should
(equal "s3pPLMBiTxaQ9kYGzzhZRbK+xOo="
(websocket-calculate-accept "dGhlIHNhbXBsZSBub25jZQ=="))))
(defconst websocket-test-hello "\x81\x05\x48\x65\x6c\x6c\x6f"
"'Hello' string example, taken from the RFC.")
(defconst websocket-test-masked-hello
"\x81\x85\x37\xfa\x21\x3d\x7f\x9f\x4d\x51\x58"
"'Hello' masked string example, taken from the RFC.")
(ert-deftest websocket-get-bytes ()
(should (equal #x5 (websocket-get-bytes "\x5" 1)))
(should (equal #x101 (websocket-get-bytes "\x1\x1" 2)))
(should (equal #x100000001
(websocket-get-bytes "\x0\x0\x0\x1\x0\x0\x0\x1" 8)))
(should-error (websocket-get-bytes "\x0\x0\x0" 3))
(should-error (websocket-get-bytes "\x0" 2)))
(ert-deftest websocket-get-opcode ()
(should (equal 'text (websocket-get-opcode websocket-test-hello))))
(ert-deftest websocket-get-payload-len ()
(should (equal '(5 . 1)
(websocket-get-payload-len
(substring websocket-test-hello 1))))
(should (equal '(200 . 3)
(websocket-get-payload-len
(bindat-pack '((:len u8) (:val u16))
`((:len . 126)
(:val . 200))))))
;; we don't want to hit up any limits even on strange emacs builds,
;; so this test has a pretty small test value
(should (equal '(70000 . 9)
(websocket-get-payload-len
(bindat-pack '((:len u8) (:val vec 2 u32))
`((:len . 127)
(:val . [0 70000])))))))
(ert-deftest websocket-read-frame ()
(should (equal (make-websocket-frame :opcode 'text :payload "Hello"
:length (length websocket-test-hello))
(websocket-read-frame websocket-test-hello)))
(should (equal (make-websocket-frame :opcode 'text :payload "Hello"
:length (length websocket-test-hello))
(websocket-read-frame (concat websocket-test-hello
"should-not-be-read"))))
(should (equal (make-websocket-frame :opcode 'text :payload "Hello"
:length (length websocket-test-masked-hello))
(websocket-read-frame websocket-test-masked-hello)))
(dotimes (i (- (length websocket-test-hello) 1))
(should-not (websocket-read-frame
(substring websocket-test-hello 0
(- (length websocket-test-hello) (+ i 1))))))
(dotimes (i (- (length websocket-test-masked-hello) 1))
(should-not (websocket-read-frame
(substring websocket-test-masked-hello 0
(- (length websocket-test-masked-hello) (+ i 1)))))))
(defun websocket-test-make-websocket-with-accept-string (s)
(make-websocket :conn "fake-conn" :url "ws://foo/bar" :filter t :close-callback t
:accept-string s))
(ert-deftest websocket-verify-handshake ()
;; This examples comes from the RFC
(should (websocket-verify-handshake
(websocket-test-make-websocket-with-accept-string "s3pPLMBiTxaQ9kYGzzhZRbK+xOo=")
"Sec-WebSocket-Accept: s3pPLMBiTxaQ9kYGzzhZRbK+xOo=\r\n"))
(should-error (websocket-verify-handshake
(websocket-test-make-websocket-with-accept-string "s3pPLMBiTxaQ9kYGzzhZRbK+xOo=")
"Sec-WebSocket-Accept: foo\r\n")))
(ert-deftest websocket-process-frame ()
(let* ((sent)
(processed)
(deleted)
(websocket (make-websocket :conn "fake-conn"
:url "ws://foo/bar"
:filter (lambda (frame) (setq processed
(websocket-frame-payload frame)))
:close-callback t
:accept-string "accept-string")))
(dolist (opcode '(text binary continuation))
(setq processed nil)
(should (equal
"hello"
(progn
(websocket-process-frame websocket
(make-websocket-frame :opcode opcode :payload "hello"))
processed))))
(setq sent nil)
(flet ((websocket-send (websocket content) (setq sent content)))
(should (equal
"\xA"
(progn
(websocket-process-frame websocket
(make-websocket-frame :opcode 'ping))
sent))))
(flet ((delete-process (conn) (setq deleted t)))
(should (progn
(websocket-process-frame websocket
(make-websocket-frame :opcode 'close))
deleted)))))