guix-play/tests/nar.scm

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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013 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-nar)
#:use-module (guix nar)
#:use-module (rnrs bytevectors)
#:use-module (rnrs io ports)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-64)
#:use-module (ice-9 ftw))
;; Test the (guix nar) module.
(define (rm-rf dir)
(file-system-fold (const #t) ; enter?
(lambda (file stat result) ; leaf
(delete-file file))
(const #t) ; down
(lambda (dir stat result) ; up
(rmdir dir))
(const #t) ; skip
(const #t) ; error
#t
dir
lstat))
(test-begin "nar")
(test-assert "write-file + restore-file"
(let* ((input (string-append (dirname (search-path %load-path "guix.scm"))
"/guix"))
(output (string-append (dirname input)
"/test-nar-"
(number->string (getpid))))
(nar (string-append output ".nar")))
(dynamic-wind
(lambda () #t)
(lambda ()
(call-with-output-file nar
(cut write-file input <>))
(call-with-input-file nar
(cut restore-file <> output))
(let* ((strip (cute string-drop <> (string-length input)))
(sibling (compose (cut string-append output <>) strip))
(file=? (lambda (a b)
(and (eq? (stat:type (lstat a)) (stat:type (lstat b)))
(case (stat:type (lstat a))
((regular)
(equal?
(call-with-input-file a get-bytevector-all)
(call-with-input-file b get-bytevector-all)))
((symlink)
(string=? (readlink a) (readlink b)))
(else
(error "what?" (lstat a))))))))
(file-system-fold (const #t)
(lambda (name stat result) ; leaf
(and result
(file=? name (sibling name))))
(lambda (name stat result) ; down
result)
(lambda (name stat result) ; up
result)
(const #f) ; skip
(lambda (name stat errno result)
(pk 'error name stat errno)
#f)
(> (stat:nlink (stat output)) 2)
input
lstat)))
(lambda ()
(false-if-exception (delete-file nar))
(false-if-exception (rm-rf output))
))))
(test-end "nar")
(exit (= (test-runner-fail-count (test-runner-current)) 0))