;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2018 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-processes)
  #:use-module (guix scripts processes)
  #:use-module (guix store)
  #:use-module (guix derivations)
  #:use-module (guix packages)
  #:use-module (guix gexp)
  #:use-module ((guix utils) #:select (call-with-temporary-directory))
  #:use-module (gnu packages bootstrap)
  #:use-module (guix tests)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-64)
  #:use-module (rnrs bytevectors)
  #:use-module (rnrs io ports)
  #:use-module (ice-9 match)
  #:use-module (ice-9 threads))

(test-begin "processes")

(test-assert "not a client"
  (not (find (lambda (session)
               (= (getpid)
                  (process-id (daemon-session-client session))))
             (daemon-sessions))))

(test-assert "client"
  (with-store store
    (let* ((session (find (lambda (session)
                            (= (getpid)
                               (process-id (daemon-session-client session))))
                          (daemon-sessions)))
           (daemon  (daemon-session-process session)))
      (and (kill (process-id daemon) 0)
           (string-suffix? "guix-daemon" (first (process-command daemon)))))))

(test-assert "client + lock"
  (with-store store
    (call-with-temporary-directory
     (lambda (directory)
       (let* ((token1  (string-append directory "/token1"))
              (token2  (string-append directory "/token2"))
              (exp     #~(begin #$(random-text)
                                (mkdir #$token1)
                                (let loop ()
                                  (unless (file-exists? #$token2)
                                    (sleep 1)
                                    (loop)))
                                (mkdir #$output)))
              (guile   (package-derivation store %bootstrap-guile))
              (drv     (run-with-store store
                         (gexp->derivation "foo" exp
                                           #:guile-for-build guile)))
              (thread  (call-with-new-thread
                        (lambda ()
                          (build-derivations store (list drv)))))
              (_       (let loop ()
                         (unless (file-exists? token1)
                           (usleep 200)
                           (loop))))
              (session (find (lambda (session)
                               (= (getpid)
                                  (process-id (daemon-session-client session))))
                             (daemon-sessions)))
              (locks   (daemon-session-locks-held (pk 'session session))))
         (call-with-output-file token2 (const #t))
         (equal? (list (string-append (derivation->output-path drv) ".lock"))
                 locks))))))

(test-end "processes")
E.
(dump-port): New procedure.
(dump-file/deduplicate)[hash]: Turn into...
[dump-and-compute-hash]: ... this thunk.
Call 'deduplicate' only when SIZE is greater than
%DEDUPLICATION-MINIMUM-SIZE; otherwise call 'dump-port'.
* nix/libstore/gc.cc (LocalStore::removeUnusedLinks): Drop files where
st.st_size &lt; deduplicationMinSize.
* nix/libstore/local-store.hh (deduplicationMinSize): New declaration.
* nix/libstore/optimise-store.cc (deduplicationMinSize): New variable.
(LocalStore::optimisePath_): Return when PATH is a symlink or smaller
than 'deduplicationMinSize'.
* tests/derivations.scm ("identical files are deduplicated"): Produce
files bigger than %DEDUPLICATION-MINIMUM-SIZE.
* tests/nar.scm ("restore-file-set with directories (signed, valid)"):
Likewise.
* tests/store-deduplication.scm ("deduplicate, below %deduplication-minimum-size"):
New test.
("deduplicate", "deduplicate, ENOSPC"): Produce files bigger than
%DEDUPLICATION-MINIMUM-SIZE.
* tests/store.scm ("substitute, deduplication"): Likewise.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-03-06 11:41:48 +0100'>2021-03-06</span></td><td><a href='/guix/commit/tests/derivations.scm?id=c05ceaf2b650d090cf39a048193505cb4e6bd257'>tests: do not hard code HTTP ports</a><span class='msg-avail'>...<span class='msg-tooltip'>Previously, test cases could fail if some process was listening
at a hard-coded port.  This patch eliminates most of these potential
failures, by automatically assigning an unbound port.  This should
allow for building multiple guix trees in parallel outside a build
container, though this is currently untested.

The test "home-page: Connection refused" in tests/lint.scm still
hardcodes port 9999, however.

* guix/tests/http.scm
  (http-server-can-listen?): remove now unused procedure.
  (%http-server-port): default to port 0, meaning the OS
  will automatically choose a port.
  (open-http-server-socket): remove the false statement claiming
  this procedure is exported and also return the allocated port
  number.
  (%local-url): raise an error if the port is obviously unbound.
  (call-with-http-server): set %http-server-port to the allocated
  port while the thunk is called.
* tests/derivations.scm: adjust test cases to use automatically
  assign a port.  As there is no risk of a port conflict now,
  do not make any tests conditional upon 'http-server-can-listen?'
  anymore.
* tests/elpa.scm: likewise.
* tests/lint.scm: likewise, and add a TODO comment about a port
  that is still hard-coded.
* tests/texlive.scm: likewise.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Maxime Devos</td></tr>