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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014, 2017 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix 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 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix 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 GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (test-hash)
#:use-module (guix hash)
#:use-module (guix base16)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-64)
#:use-module (rnrs bytevectors)
#:use-module (rnrs io ports))
;; Test the (guix hash) module.
(define %empty-sha256
;; SHA256 hash of the empty string.
(base16-string->bytevector
"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"))
(define %hello-sha256
;; SHA256 hash of "hello world"
(base16-string->bytevector
"b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9"))
(define (supports-unbuffered-cbip?)
"Return #t if unbuffered custom binary input ports (CBIPs) are supported.
In Guile <= 2.0.9, CBIPs were always fully buffered, so the
'open-sha256-input-port' does not work there."
(false-if-exception
(setvbuf (make-custom-binary-input-port "foo" pk #f #f #f) _IONBF)))
(test-begin "hash")
(test-equal "sha256, empty"
%empty-sha256
(sha256 #vu8()))
(test-equal "sha256, hello"
%hello-sha256
(sha256 (string->utf8 "hello world")))
(test-equal "open-sha256-port, empty"
%empty-sha256
(let-values (((port get)
(open-sha256-port)))
(close-port port)
(get)))
(test-equal "open-sha256-port, hello"
%hello-sha256
(let-values (((port get)
(open-sha256-port)))
(put-bytevector port (string->utf8 "hello world"))
(force-output port)
(get)))
(test-assert "port-sha256"
(let* ((file (search-path %load-path "ice-9/psyntax.scm"))
(size (stat:size (stat file)))
(contents (call-with-input-file file get-bytevector-all)))
(equal? (sha256 contents)
(call-with-input-file file port-sha256))))
(test-skip (if (supports-unbuffered-cbip?) 0 4))
(test-equal "open-sha256-input-port, empty"
`("" ,%empty-sha256)
(let-values (((port get)
(open-sha256-input-port (open-string-input-port ""))))
(let ((str (get-string-all port)))
(list str (get)))))
(test-equal "open-sha256-input-port, hello"
`("hello world" ,%hello-sha256)
(let-values (((port get)
(open-sha256-input-port
(open-bytevector-input-port
(string->utf8 "hello world")))))
(let ((str (get-string-all port)))
(list str (get)))))
(test-equal "open-sha256-input-port, hello, one two"
(list (string->utf8 "hel") (string->utf8 "lo")
(base16-string->bytevector ; echo -n hello | sha256sum
"2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824")
" world")
(let-values (((port get)
(open-sha256-input-port
(open-bytevector-input-port (string->utf8 "hello world")))))
(let* ((one (get-bytevector-n port 3))
(two (get-bytevector-n port 2))
(hash (get))
(three (get-string-all port)))
(list one two hash three))))
(test-equal "open-sha256-input-port, hello, read from wrapped port"
(list (string->utf8 "hello")
(base16-string->bytevector ; echo -n hello | sha256sum
"2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824")
" world")
(let*-values (((wrapped)
(open-bytevector-input-port (string->utf8 "hello world")))
((port get)
(open-sha256-input-port wrapped)))
(let* ((hello (get-bytevector-n port 5))
(hash (get))
;; Now read from WRAPPED to make sure its current position is
;; correct.
(world (get-string-all wrapped)))
(list hello hash world))))
(test-end)
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