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
42 with-environment-variable
49 with-derivation-narinfo
50 with-derivation-substitute
56 ;;; This module provide shared infrastructure for the test suite. For
57 ;;; internal use only.
61 (define %test-substitute-urls
62 ;; URLs where to look for substitutes during tests.
64 (or (and=> (getenv "GUIX_BINARY_SUBSTITUTE_URL") list)
67 (define* (open-connection-for-tests #:optional (uri (%daemon-socket-uri)))
68 "Open a connection to the build daemon for tests purposes and return it."
69 (guard (c ((store-error? c)
70 (format (current-error-port)
71 "warning: build daemon error: ~s~%" c)
73 (let ((store (open-connection uri)))
74 ;; Make sure we build everything by ourselves.
75 (set-build-options store
77 #:substitute-urls (%test-substitute-urls))
79 ;; Use the bootstrap Guile when running tests, so we don't end up
80 ;; building everything in the temporary test store.
81 (%guile-for-build (package-derivation store %bootstrap-guile))
85 (define (call-with-external-store proc)
86 "Call PROC with an open connection to the external store or #f it there is
87 no external store to talk to."
88 (parameterize ((%daemon-socket-uri
89 (string-append %localstatedir
90 "/guix/daemon-socket/socket"))
91 (%store-prefix %storedir))
101 ;; Since we're using a different store we must clear the
102 ;; package-derivation cache.
103 (hash-clear! (@@ (guix packages) %derivation-cache))
108 (close-connection store))))))
110 (define-syntax-rule (with-external-store store exp ...)
111 "Evaluate EXP with STORE bound to the external store rather than the
112 temporary test store, or #f if there is no external store to talk to.
114 This is meant to be used for tests that need to build packages that would be
115 too expensive to build entirely in the test store."
116 (call-with-external-store (lambda (store) exp ...)))
118 (define (random-seed)
119 (or (and=> (getenv "GUIX_TESTS_RANDOM_SEED")
121 (logxor (getpid) (car (gettimeofday)))))
124 (let ((seed (random-seed)))
125 (format (current-error-port) "random seed for tests: ~a~%"
127 (seed->random-state seed)))
129 (define (random-text)
130 "Return the hexadecimal representation of a random number."
131 (number->string (random (expt 2 256) %seed) 16))
133 (define (random-bytevector n)
134 "Return a random bytevector of N bytes."
135 (let ((bv (make-bytevector n)))
139 (bytevector-u8-set! bv i (random 256 %seed))
144 "Return true if files A and B have the same type and same content."
145 (and (eq? (stat:type (lstat a)) (stat:type (lstat b)))
146 (case (stat:type (lstat a))
149 (call-with-input-file a get-bytevector-all)
150 (call-with-input-file b get-bytevector-all)))
152 (string=? (readlink a) (readlink b)))
154 (error "what?" (lstat a))))))
156 (define (canonical-file? file)
157 "Return #t if FILE is in the store, is read-only, and its mtime is 1."
158 (let ((st (lstat file)))
159 (or (not (string-prefix? (%store-prefix) file))
160 (eq? 'symlink (stat:type st))
161 (and (= 1 (stat:mtime st))
162 (zero? (logand #o222 (stat:mode st)))))))
164 (define (network-reachable?)
165 "Return true if we can reach the Internet."
166 (false-if-exception (getaddrinfo "www.gnu.org" "80" AI_NUMERICSERV)))
168 (define-syntax-rule (mock (module proc replacement) body ...)
169 "Within BODY, replace the definition of PROC from MODULE with the definition
170 given by REPLACEMENT."
171 (let* ((m (resolve-module 'module))
172 (original (module-ref m 'proc)))
174 (lambda () (module-set! m 'proc replacement))
176 (lambda () (module-set! m 'proc original)))))
178 (define-syntax-rule (test-assertm name exp)
179 "Like 'test-assert', but EXP is a monadic value. A new connection to the
182 (let ((store (open-connection-for-tests)))
186 (run-with-store store exp
187 #:guile-for-build (%guile-for-build)))
189 (close-connection store))))))
191 (define-syntax-rule (test-equalm name value exp)
192 "Like 'test-equal', but EXP is a monadic value. A new connection to the
197 (run-with-store store exp
198 #:guile-for-build (%guile-for-build)))))
200 (define-syntax-rule (with-environment-variable variable value body ...)
201 "Run BODY with VARIABLE set to VALUE."
202 (let ((orig (getenv variable)))
205 (setenv variable value))
210 (setenv variable orig)
211 (unsetenv variable))))))
215 ;;; Narinfo files, as used by the substituter.
218 (define* (derivation-narinfo drv #:key (nar "example.nar")
219 (sha256 (make-bytevector 32 0))
221 "Return the contents of the narinfo corresponding to DRV, with the specified
222 REFERENCES (a list of store items); NAR should be the file name of the archive
223 containing the substitute for DRV, and SHA256 is the expected hash."
224 (format #f "StorePath: ~a
232 (derivation->output-path drv) ; StorePath
234 (bytevector->nix-base32-string sha256) ; NarHash
235 (string-join (map basename references)) ; References
236 (derivation-system drv) ; System
238 (derivation-file-name drv)))) ; Deriver
240 (define %substitute-directory
242 (and=> (getenv "GUIX_BINARY_SUBSTITUTE_URL")
243 (compose uri-path string->uri))))
245 (define* (call-with-derivation-narinfo drv thunk
247 (sha256 (make-bytevector 32 0))
249 "Call THUNK in a context where fake substituter data, as read by 'guix
250 substitute', has been installed for DRV. SHA256 is the hash of the
251 expected output of DRV."
252 (let* ((output (derivation->output-path drv))
253 (dir (%substitute-directory))
254 (info (string-append dir "/nix-cache-info"))
255 (narinfo (string-append dir "/" (store-path-hash-part output)
259 (call-with-output-file info
261 (format p "StoreDir: ~a\nWantMassQuery: 0\n"
263 (call-with-output-file narinfo
265 (display (derivation-narinfo drv #:sha256 sha256
266 #:references references)
270 (delete-file narinfo)
271 (delete-file info)))))
273 (define-syntax with-derivation-narinfo
274 (syntax-rules (sha256 references =>)
275 "Evaluate BODY in a context where DRV looks substitutable from the
276 substituter's viewpoint."
277 ((_ drv (sha256 => hash) (references => refs) body ...)
278 (call-with-derivation-narinfo drv
282 ((_ drv (sha256 => hash) body ...)
283 (with-derivation-narinfo drv
284 (sha256 => hash) (references => '())
287 (call-with-derivation-narinfo drv
291 (define* (call-with-derivation-substitute drv contents thunk
295 "Call THUNK in a context where a substitute for DRV has been installed,
296 using CONTENTS, a string, as its contents. If SHA256 is true, use it as the
297 expected hash of the substitute; otherwise use the hash of the nar containing
299 (define dir (%substitute-directory))
302 (call-with-output-file (string-append dir "/example.out")
304 (display contents port)))
305 (call-with-output-file (string-append dir "/example.nar")
307 (write-file (string-append dir "/example.out") p))))
309 (let ((hash (call-with-input-file (string-append dir "/example.nar")
311 ;; Create fake substituter data, to be read by 'guix substitute'.
312 (call-with-derivation-narinfo drv
314 #:sha256 (or sha256 hash)
315 #:references references)))
317 (delete-file (string-append dir "/example.out"))
318 (delete-file (string-append dir "/example.nar")))))
320 (define (shebang-too-long?)
321 "Return true if the typical shebang in the current store would exceed
322 Linux's static limit---the BINPRM_BUF_SIZE constant, normally 128 characters
325 (string-append "#!" (%store-prefix) "/"
327 "-bootstrap-binaries-0/bin/bash\0"))
329 (> (string-length shebang) 128))
331 (define-syntax with-derivation-substitute
332 (syntax-rules (sha256 references =>)
333 "Evaluate BODY in a context where DRV is substitutable with the given
335 ((_ drv contents (sha256 => hash) (references => refs) body ...)
336 (call-with-derivation-substitute drv contents
340 ((_ drv contents (sha256 => hash) body ...)
341 (with-derivation-substitute drv contents
342 (sha256 => hash) (references => '())
344 ((_ drv contents body ...)
345 (call-with-derivation-substitute drv contents
349 (define-syntax-rule (dummy-package name* extra-fields ...)
350 "Return a \"dummy\" package called NAME*, with all its compulsory fields
351 initialized with default values, and with EXTRA-FIELDS set as specified."
353 (name name*) (version "0") (source #f)
354 (build-system gnu-build-system)
355 (synopsis #f) (description #f)
356 (home-page #f) (license #f))))
357 (package (inherit p) extra-fields ...)))
359 (define-syntax-rule (dummy-origin extra-fields ...)
360 "Return a \"dummy\" origin, with all its compulsory fields initialized with
361 default values, and with EXTRA-FIELDS set as specified."
362 (let ((o (origin (method #f) (uri "http://www.example.com")
363 (sha256 (base32 (make-string 52 #\x))))))
364 (origin (inherit o) extra-fields ...)))
367 ;; eval: (put 'call-with-derivation-narinfo 'scheme-indent-function 1)
368 ;; eval: (put 'call-with-derivation-substitute 'scheme-indent-function 2)
371 ;;; tests.scm ends here