df0a3b7f9e
* guix/tests.scm (open-connection-for-tests): Add optional FILE parameter; pass it to 'open-connection'.
268 lines
9.3 KiB
Scheme
268 lines
9.3 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2013, 2014, 2015 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 (guix tests)
|
||
#:use-module (guix store)
|
||
#:use-module (guix derivations)
|
||
#:use-module (guix packages)
|
||
#:use-module (guix base32)
|
||
#:use-module (guix serialization)
|
||
#:use-module (guix hash)
|
||
#:use-module (guix build-system gnu)
|
||
#:use-module (gnu packages bootstrap)
|
||
#:use-module (srfi srfi-34)
|
||
#:use-module (rnrs bytevectors)
|
||
#:use-module (rnrs io ports)
|
||
#:use-module (web uri)
|
||
#:export (open-connection-for-tests
|
||
random-text
|
||
random-bytevector
|
||
file=?
|
||
network-reachable?
|
||
shebang-too-long?
|
||
mock
|
||
%test-substitute-urls
|
||
%substitute-directory
|
||
with-derivation-narinfo
|
||
with-derivation-substitute
|
||
dummy-package
|
||
dummy-origin))
|
||
|
||
;;; Commentary:
|
||
;;;
|
||
;;; This module provide shared infrastructure for the test suite. For
|
||
;;; internal use only.
|
||
;;;
|
||
;;; Code:
|
||
|
||
(define %test-substitute-urls
|
||
;; URLs where to look for substitutes during tests.
|
||
(make-parameter
|
||
(or (and=> (getenv "GUIX_BINARY_SUBSTITUTE_URL") list)
|
||
'())))
|
||
|
||
(define* (open-connection-for-tests #:optional (file (%daemon-socket-file)))
|
||
"Open a connection to the build daemon for tests purposes and return it."
|
||
(guard (c ((nix-error? c)
|
||
(format (current-error-port)
|
||
"warning: build daemon error: ~s~%" c)
|
||
#f))
|
||
(let ((store (open-connection file)))
|
||
;; Make sure we build everything by ourselves.
|
||
(set-build-options store
|
||
#:use-substitutes? #f
|
||
#:substitute-urls (%test-substitute-urls))
|
||
|
||
;; Use the bootstrap Guile when running tests, so we don't end up
|
||
;; building everything in the temporary test store.
|
||
(%guile-for-build (package-derivation store %bootstrap-guile))
|
||
|
||
store)))
|
||
|
||
(define (random-seed)
|
||
(or (and=> (getenv "GUIX_TESTS_RANDOM_SEED")
|
||
number->string)
|
||
(logxor (getpid) (car (gettimeofday)))))
|
||
|
||
(define %seed
|
||
(let ((seed (random-seed)))
|
||
(format (current-error-port) "random seed for tests: ~a~%"
|
||
seed)
|
||
(seed->random-state seed)))
|
||
|
||
(define (random-text)
|
||
"Return the hexadecimal representation of a random number."
|
||
(number->string (random (expt 2 256) %seed) 16))
|
||
|
||
(define (random-bytevector n)
|
||
"Return a random bytevector of N bytes."
|
||
(let ((bv (make-bytevector n)))
|
||
(let loop ((i 0))
|
||
(if (< i n)
|
||
(begin
|
||
(bytevector-u8-set! bv i (random 256 %seed))
|
||
(loop (1+ i)))
|
||
bv))))
|
||
|
||
(define (file=? a b)
|
||
"Return true if files A and B have the same type and same content."
|
||
(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))))))
|
||
|
||
(define (network-reachable?)
|
||
"Return true if we can reach the Internet."
|
||
(false-if-exception (getaddrinfo "www.gnu.org" "80" AI_NUMERICSERV)))
|
||
|
||
(define-syntax-rule (mock (module proc replacement) body ...)
|
||
"Within BODY, replace the definition of PROC from MODULE with the definition
|
||
given by REPLACEMENT."
|
||
(let* ((m (resolve-module 'module))
|
||
(original (module-ref m 'proc)))
|
||
(dynamic-wind
|
||
(lambda () (module-set! m 'proc replacement))
|
||
(lambda () body ...)
|
||
(lambda () (module-set! m 'proc original)))))
|
||
|
||
|
||
;;;
|
||
;;; Narinfo files, as used by the substituter.
|
||
;;;
|
||
|
||
(define* (derivation-narinfo drv #:key (nar "example.nar")
|
||
(sha256 (make-bytevector 32 0)))
|
||
"Return the contents of the narinfo corresponding to DRV; NAR should be the
|
||
file name of the archive containing the substitute for DRV, and SHA256 is the
|
||
expected hash."
|
||
(format #f "StorePath: ~a
|
||
URL: ~a
|
||
Compression: none
|
||
NarSize: 1234
|
||
NarHash: sha256:~a
|
||
References:
|
||
System: ~a
|
||
Deriver: ~a~%"
|
||
(derivation->output-path drv) ; StorePath
|
||
nar ; URL
|
||
(bytevector->nix-base32-string sha256) ; NarHash
|
||
(derivation-system drv) ; System
|
||
(basename
|
||
(derivation-file-name drv)))) ; Deriver
|
||
|
||
(define %substitute-directory
|
||
(make-parameter
|
||
(and=> (getenv "GUIX_BINARY_SUBSTITUTE_URL")
|
||
(compose uri-path string->uri))))
|
||
|
||
(define* (call-with-derivation-narinfo drv thunk
|
||
#:key (sha256 (make-bytevector 32 0)))
|
||
"Call THUNK in a context where fake substituter data, as read by 'guix
|
||
substitute', has been installed for DRV. SHA256 is the hash of the
|
||
expected output of DRV."
|
||
(let* ((output (derivation->output-path drv))
|
||
(dir (%substitute-directory))
|
||
(info (string-append dir "/nix-cache-info"))
|
||
(narinfo (string-append dir "/" (store-path-hash-part output)
|
||
".narinfo")))
|
||
(dynamic-wind
|
||
(lambda ()
|
||
(call-with-output-file info
|
||
(lambda (p)
|
||
(format p "StoreDir: ~a\nWantMassQuery: 0\n"
|
||
(%store-prefix))))
|
||
(call-with-output-file narinfo
|
||
(lambda (p)
|
||
(display (derivation-narinfo drv #:sha256 sha256) p))))
|
||
thunk
|
||
(lambda ()
|
||
(delete-file narinfo)
|
||
(delete-file info)))))
|
||
|
||
(define-syntax with-derivation-narinfo
|
||
(syntax-rules (sha256 =>)
|
||
"Evaluate BODY in a context where DRV looks substitutable from the
|
||
substituter's viewpoint."
|
||
((_ drv (sha256 => hash) body ...)
|
||
(call-with-derivation-narinfo drv
|
||
(lambda () body ...)
|
||
#:sha256 hash))
|
||
((_ drv body ...)
|
||
(call-with-derivation-narinfo drv
|
||
(lambda ()
|
||
body ...)))))
|
||
|
||
(define* (call-with-derivation-substitute drv contents thunk
|
||
#:key sha256)
|
||
"Call THUNK in a context where a substitute for DRV has been installed,
|
||
using CONTENTS, a string, as its contents. If SHA256 is true, use it as the
|
||
expected hash of the substitute; otherwise use the hash of the nar containing
|
||
CONTENTS."
|
||
(define dir (%substitute-directory))
|
||
(dynamic-wind
|
||
(lambda ()
|
||
(call-with-output-file (string-append dir "/example.out")
|
||
(lambda (port)
|
||
(display contents port)))
|
||
(call-with-output-file (string-append dir "/example.nar")
|
||
(lambda (p)
|
||
(write-file (string-append dir "/example.out") p))))
|
||
(lambda ()
|
||
(let ((hash (call-with-input-file (string-append dir "/example.nar")
|
||
port-sha256)))
|
||
;; Create fake substituter data, to be read by 'guix substitute'.
|
||
(call-with-derivation-narinfo drv
|
||
thunk
|
||
#:sha256 (or sha256 hash))))
|
||
(lambda ()
|
||
(delete-file (string-append dir "/example.out"))
|
||
(delete-file (string-append dir "/example.nar")))))
|
||
|
||
(define (shebang-too-long?)
|
||
"Return true if the typical shebang in the current store would exceed
|
||
Linux's static limit---the BINPRM_BUF_SIZE constant, normally 128 characters
|
||
all included."
|
||
(define shebang
|
||
(string-append "#!" (%store-prefix) "/"
|
||
(make-string 32 #\a)
|
||
"-bootstrap-binaries-0/bin/bash\0"))
|
||
|
||
(> (string-length shebang) 128))
|
||
|
||
(define-syntax with-derivation-substitute
|
||
(syntax-rules (sha256 =>)
|
||
"Evaluate BODY in a context where DRV is substitutable with the given
|
||
CONTENTS."
|
||
((_ drv contents (sha256 => hash) body ...)
|
||
(call-with-derivation-substitute drv contents
|
||
(lambda () body ...)
|
||
#:sha256 hash))
|
||
((_ drv contents body ...)
|
||
(call-with-derivation-substitute drv contents
|
||
(lambda ()
|
||
body ...)))))
|
||
|
||
(define-syntax-rule (dummy-package name* extra-fields ...)
|
||
"Return a \"dummy\" package called NAME*, with all its compulsory fields
|
||
initialized with default values, and with EXTRA-FIELDS set as specified."
|
||
(package extra-fields ...
|
||
(name name*) (version "0") (source #f)
|
||
(build-system gnu-build-system)
|
||
(synopsis #f) (description #f)
|
||
(home-page #f) (license #f)))
|
||
|
||
(define-syntax-rule (dummy-origin extra-fields ...)
|
||
"Return a \"dummy\" origin, with all its compulsory fields initialized with
|
||
default values, and with EXTRA-FIELDS set as specified."
|
||
(origin extra-fields ...
|
||
(method #f) (uri "http://www.example.com")
|
||
(sha256 (base32 (make-string 52 #\x)))))
|
||
|
||
;; Local Variables:
|
||
;; eval: (put 'call-with-derivation-narinfo 'scheme-indent-function 1)
|
||
;; eval: (put 'call-with-derivation-substitute 'scheme-indent-function 2)
|
||
;; End:
|
||
|
||
;;; tests.scm ends here
|