1 ;;; GNU Guix --- Functional package management for GNU
2 ;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
4 ;;; This file is part of GNU Guix.
6 ;;; GNU Guix is free software; you can redistribute it and/or modify it
7 ;;; under the terms of the GNU General Public License as published by
8 ;;; the Free Software Foundation; either version 3 of the License, or (at
9 ;;; your option) any later version.
11 ;;; GNU Guix is distributed in the hope that it will be useful, but
12 ;;; WITHOUT ANY WARRANTY; without even the implied warranty of
13 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 ;;; GNU General Public License for more details.
16 ;;; You should have received a copy of the GNU General Public License
17 ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
19 (define-module (guix tests)
20 #:use-module ((guix config) #:select (%storedir %localstatedir))
21 #:use-module (guix store)
22 #:use-module (guix derivations)
23 #:use-module (guix packages)
24 #:use-module (guix base32)
25 #:use-module (guix serialization)
26 #:use-module (gcrypt hash)
27 #:use-module (guix build-system gnu)
28 #:use-module (gnu packages bootstrap)
29 #:use-module (srfi srfi-34)
30 #:use-module (srfi srfi-64)
31 #:use-module (rnrs bytevectors)
32 #:use-module (ice-9 binary-ports)
33 #:use-module (web uri)
34 #:export (open-connection-for-tests
43 with-environment-variable
50 with-derivation-narinfo
51 with-derivation-substitute
57 ;;; This module provide shared infrastructure for the test suite. For
58 ;;; internal use only.
62 (define %test-substitute-urls
63 ;; URLs where to look for substitutes during tests.
65 (or (and=> (getenv "GUIX_BINARY_SUBSTITUTE_URL") list)
68 (define* (open-connection-for-tests #:optional (uri (%daemon-socket-uri)))
69 "Open a connection to the build daemon for tests purposes and return it."
70 (guard (c ((store-error? c)
71 (format (current-error-port)
72 "warning: build daemon error: ~s~%" c)
74 (let ((store (open-connection uri)))
75 ;; Make sure we build everything by ourselves.
76 (set-build-options store
78 #:substitute-urls (%test-substitute-urls))
80 ;; Use the bootstrap Guile when running tests, so we don't end up
81 ;; building everything in the temporary test store.
82 (%guile-for-build (package-derivation store %bootstrap-guile))
86 (define (call-with-external-store proc)
87 "Call PROC with an open connection to the external store or #f it there is
88 no external store to talk to."
89 (parameterize ((%daemon-socket-uri
90 (string-append %localstatedir
91 "/guix/daemon-socket/socket"))
92 (%store-prefix %storedir))
102 ;; Since we're using a different store we must clear the
103 ;; package-derivation cache.
104 (hash-clear! (@@ (guix packages) %derivation-cache))
109 (close-connection store))))))
111 (define-syntax-rule (with-external-store store exp ...)
112 "Evaluate EXP with STORE bound to the external store rather than the
113 temporary test store, or #f if there is no external store to talk to.
115 This is meant to be used for tests that need to build packages that would be
116 too expensive to build entirely in the test store."
117 (call-with-external-store (lambda (store) exp ...)))
119 (define (random-seed)
120 (or (and=> (getenv "GUIX_TESTS_RANDOM_SEED")
122 (logxor (getpid) (car (gettimeofday)))))
125 (let ((seed (random-seed)))
126 (format (current-error-port) "random seed for tests: ~a~%"
128 (seed->random-state seed)))
130 (define (random-text)
131 "Return the hexadecimal representation of a random number."
132 (number->string (random (expt 2 256) %seed) 16))
134 (define (random-bytevector n)
135 "Return a random bytevector of N bytes."
136 (let ((bv (make-bytevector n)))
140 (bytevector-u8-set! bv i (random 256 %seed))
145 "Return true if files A and B have the same type and same content."
146 (and (eq? (stat:type (lstat a)) (stat:type (lstat b)))
147 (case (stat:type (lstat a))
150 (call-with-input-file a get-bytevector-all)
151 (call-with-input-file b get-bytevector-all)))
153 (string=? (readlink a) (readlink b)))
155 (error "what?" (lstat a))))))
157 (define (canonical-file? file)
158 "Return #t if FILE is in the store, is read-only, and its mtime is 1."
159 (let ((st (lstat file)))
160 (or (not (string-prefix? (%store-prefix) file))
161 (eq? 'symlink (stat:type st))
162 (and (= 1 (stat:mtime st))
163 (zero? (logand #o222 (stat:mode st)))))))
165 (define (network-reachable?)
166 "Return true if we can reach the Internet."
167 (false-if-exception (getaddrinfo "www.gnu.org" "80" AI_NUMERICSERV)))
169 (define-syntax-rule (mock (module proc replacement) body ...)
170 "Within BODY, replace the definition of PROC from MODULE with the definition
171 given by REPLACEMENT."
172 (let* ((m (resolve-module 'module))
173 (original (module-ref m 'proc)))
175 (lambda () (module-set! m 'proc replacement))
177 (lambda () (module-set! m 'proc original)))))
179 (define-syntax-rule (test-assertm name exp)
180 "Like 'test-assert', but EXP is a monadic value. A new connection to the
183 (let ((store (open-connection-for-tests)))
187 (run-with-store store exp
188 #:guile-for-build (%guile-for-build)))
190 (close-connection store))))))
192 (define-syntax-rule (test-equalm name value exp)
193 "Like 'test-equal', but EXP is a monadic value. A new connection to the
198 (run-with-store store exp
199 #:guile-for-build (%guile-for-build)))))
201 (define-syntax-rule (with-environment-variable variable value body ...)
202 "Run BODY with VARIABLE set to VALUE."
203 (let ((orig (getenv variable)))
206 (setenv variable value))
211 (setenv variable orig)
212 (unsetenv variable))))))
216 ;;; Narinfo files, as used by the substituter.
219 (define* (derivation-narinfo drv #:key (nar "example.nar")
220 (sha256 (make-bytevector 32 0))
222 "Return the contents of the narinfo corresponding to DRV, with the specified
223 REFERENCES (a list of store items); NAR should be the file name of the archive
224 containing the substitute for DRV, and SHA256 is the expected hash."
225 (format #f "StorePath: ~a
233 (derivation->output-path drv) ; StorePath
235 (bytevector->nix-base32-string sha256) ; NarHash
236 (string-join (map basename references)) ; References
237 (derivation-system drv) ; System
239 (derivation-file-name drv)))) ; Deriver
241 (define %substitute-directory
243 (and=> (getenv "GUIX_BINARY_SUBSTITUTE_URL")
244 (compose uri-path string->uri))))
246 (define* (call-with-derivation-narinfo drv thunk
248 (sha256 (make-bytevector 32 0))
250 "Call THUNK in a context where fake substituter data, as read by 'guix
251 substitute', has been installed for DRV. SHA256 is the hash of the
252 expected output of DRV."
253 (let* ((output (derivation->output-path drv))
254 (dir (%substitute-directory))
255 (info (string-append dir "/nix-cache-info"))
256 (narinfo (string-append dir "/" (store-path-hash-part output)
260 (call-with-output-file info
262 (format p "StoreDir: ~a\nWantMassQuery: 0\n"
264 (call-with-output-file narinfo
266 (display (derivation-narinfo drv #:sha256 sha256
267 #:references references)
271 (delete-file narinfo)
272 (delete-file info)))))
274 (define-syntax with-derivation-narinfo
275 (syntax-rules (sha256 references =>)
276 "Evaluate BODY in a context where DRV looks substitutable from the
277 substituter's viewpoint."
278 ((_ drv (sha256 => hash) (references => refs) body ...)
279 (call-with-derivation-narinfo drv
283 ((_ drv (sha256 => hash) body ...)
284 (with-derivation-narinfo drv
285 (sha256 => hash) (references => '())
288 (call-with-derivation-narinfo drv
292 (define* (call-with-derivation-substitute drv contents thunk
296 "Call THUNK in a context where a substitute for DRV has been installed,
297 using CONTENTS, a string, as its contents. If SHA256 is true, use it as the
298 expected hash of the substitute; otherwise use the hash of the nar containing
300 (define dir (%substitute-directory))
303 (call-with-output-file (string-append dir "/example.out")
305 (display contents port)))
306 (call-with-output-file (string-append dir "/example.nar")
308 (write-file (string-append dir "/example.out") p))))
310 (let ((hash (call-with-input-file (string-append dir "/example.nar")
312 ;; Create fake substituter data, to be read by 'guix substitute'.
313 (call-with-derivation-narinfo drv
315 #:sha256 (or sha256 hash)
316 #:references references)))
318 (delete-file (string-append dir "/example.out"))
319 (delete-file (string-append dir "/example.nar")))))
321 (define (shebang-too-long?)
322 "Return true if the typical shebang in the current store would exceed
323 Linux's static limit---the BINPRM_BUF_SIZE constant, normally 128 characters
326 (string-append "#!" (%store-prefix) "/"
328 "-bootstrap-binaries-0/bin/bash\0"))
330 (> (string-length shebang) 128))
332 (define-syntax with-derivation-substitute
333 (syntax-rules (sha256 references =>)
334 "Evaluate BODY in a context where DRV is substitutable with the given
336 ((_ drv contents (sha256 => hash) (references => refs) body ...)
337 (call-with-derivation-substitute drv contents
341 ((_ drv contents (sha256 => hash) body ...)
342 (with-derivation-substitute drv contents
343 (sha256 => hash) (references => '())
345 ((_ drv contents body ...)
346 (call-with-derivation-substitute drv contents
350 (define-syntax-rule (dummy-package name* extra-fields ...)
351 "Return a \"dummy\" package called NAME*, with all its compulsory fields
352 initialized with default values, and with EXTRA-FIELDS set as specified."
354 (name name*) (version "0") (source #f)
355 (build-system gnu-build-system)
356 (synopsis #f) (description #f)
357 (home-page #f) (license #f))))
358 (package (inherit p) extra-fields ...)))
360 (define-syntax-rule (dummy-origin extra-fields ...)
361 "Return a \"dummy\" origin, with all its compulsory fields initialized with
362 default values, and with EXTRA-FIELDS set as specified."
363 (let ((o (origin (method #f) (uri "http://www.example.com")
364 (sha256 (base32 (make-string 52 #\x))))))
365 (origin (inherit o) extra-fields ...)))
368 ;; eval: (put 'call-with-derivation-narinfo 'scheme-indent-function 1)
369 ;; eval: (put 'call-with-derivation-substitute 'scheme-indent-function 2)
372 ;;; tests.scm ends here