Merge branch 'master' into staging

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diff --git a/tests/services/linux.scm b/tests/services/linux.scm
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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2020 Maxim Cournoyer <maxim.cournoyer@gmail.com>
+;;;
+;;; 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 (tests services linux)
+  #:use-module (ice-9 match)
+  #:use-module (gnu packages linux)
+  #:use-module (gnu services linux)
+  #:use-module (guix gexp)
+  #:use-module (srfi srfi-64))
+
+;;; Tests for the (gnu services linux) module.
+
+(test-begin "linux-services")
+
+
+;;;
+;;; Early OOM daemon.
+;;;
+
+(define earlyoom-configuration->command-line-args
+  (@@ (gnu services linux) earlyoom-configuration->command-line-args))
+
+(define %earlyoom-configuration-sample
+  (earlyoom-configuration
+   (minimum-available-memory 10)
+   (minimum-free-swap 20)
+   (prefer-regexp "icecat")
+   (avoid-regexp "guix-daemon")
+   (memory-report-interval 60)
+   (ignore-positive-oom-score-adj? #f)
+   (run-with-higher-priority? #t)
+   (show-debug-messages? #f)
+   (send-notification-command "python \"/some/path/notify-all-users.py\"")))
+
+(test-equal "earlyoom-configuration->command-line-args"
+  (list (file-append earlyoom "/bin/earlyoom")
+        "-m" "10" "-s" "20" "--prefer" "icecat"
+        "--avoid" "guix-daemon" "-r" "60" "-p"
+        "-N" "python \"/some/path/notify-all-users.py\"")
+  (earlyoom-configuration->command-line-args %earlyoom-configuration-sample))
+
+(test-end "linux-services")