;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2023 Bruno Victal <mirai@makinata.eu>.
;;;
;;; 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 (gnu tests vnstat)
  #:use-module (gnu tests)
  #:use-module ((gnu packages networking) #:select (socat vnstat))
  #:use-module (gnu services)
  #:use-module (gnu services</td></tr></table>
<table class='tabs'><tr><td>
<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=37b9be5878d1694967a41d313de97f7a957df120'>refs</a><a href='/guix/log/gnu'>log</a><a href='/guix/tree/gnu?id=37b9be5878d1694967a41d313de97f7a957df120'>tree</a><a href='/guix/commit/gnu?id=37b9be5878d1694967a41d313de97f7a957df120'>commit</a><a class='active' href='/guix/diff/gnu?id=37b9be5878d1694967a41d313de97f7a957df120'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu'>
<input type='hidden' name='id' value='37b9be5878d1694967a41d313de97f7a957df120'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/diff/?id=37b9be5878d1694967a41d313de97f7a957df120'>root</a>/<a href='/guix/diff/gnu?id=37b9be5878d1694967a41d313de97f7a957df120'>gnu</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='37b9be5878d1694967a41d313de97f7a957df120'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><div class='diffstat-header'><a href='/guix/diff/?id=37b9be5878d1694967a41d313de97f7a957df120'>Diffstat</a> (limited to 'gnu')</div><table summary='diffstat' class='diffstat'>: re-add #:output (%make-void-port "w") below on
                   ;; next Guile release.
                   (garbage-pump-pid
                    (spawn socat args)))
              (test-group-with-cleanup "Logging"
                ;; To aid debugging, this test returns #t on success
                ;; and either #f or 'timed-out otherwise.
                (test-eq "vnstatd is logging"
                  #t
                  (marionette-eval
                   '(begin
                      (use-modules (ice-9 popen)
                                   (ice-9 match)
                                   (sxml simple)
                                   (sxml xpath))

                      (define selector
                        (let ((xpath '(vnstat interface traffic total)))
                          (compose (node-pos 1) (sxpath xpath))))

                      (let loop ((i 0))
                        (let* ((vnstat #$(file-append vnstat "/bin/vnstat"))
                               (query-cmd (format #f "~a --xml" vnstat))
                               (proc (compose selector xml->sxml))
                               (result
                                (call-with-port
                                    (open-input-pipe query-cmd) proc)))
                          (match result
                            ;; Counter still warming up.
                            ((('total ('rx "0") ('tx "0")))
                             (sleep 1)
                             (if (< i #$test-timeout)
                                 (loop (+ i 1))
                                 'timed-out))
                            ;; Count of bytes on iface was non-zero.
                            ((('total ('rx rx) ('tx tx)))
                             #t)
                            ;; Unknown data encountered, perhaps the
                            ;; data format changed?
                            (_ #f)))))
                   marionette))
                ;; Cleanup: shutdown garbage pump.
                (kill garbage-pump-pid SIGTERM)))

            (test-end)))))

  (gexp->derivation "vnstat-test" test))

(define %test-vnstat
  (system-test
   (name "vnstat")
   (description "Basic tests for vnstat service.")
   (value (run-vnstat-test))))