tests: Move mcron test to its own file.

This mirrors the (gnu services mcron) module.

* gnu/tests/base.scm (%mcron-os, run-mcron-test, %test-mcron): Move to…
* gnu/tests/mcron.scm: … here.  New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.

Change-Id: Id2830d08d8e797e008c5fec7964fb5f6a5ea2fad

1 files changed, 118 insertions, 0 deletions

diff --git a/gnu/tests/mcron.scm b/gnu/tests/mcron.scm
new file mode 100644
index 00000000000..052c8439cc7
--- /dev/null
+++ b/gnu/tests/mcron.scm
@@ -0,0 +1,118 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2016-2020, 2022, 2024 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2018 Clément Lassieur <clement@lassieur.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 (gnu tests mcron)
+  #:use-module (gnu tests)
+  #:use-module (gnu system)
+  #:use-module (gnu system vm)
+  #:use-module (gnu services)
+  #:use-module (gnu services mcron)
+  #:use-module (guix gexp)
+  #:use-module (guix store)
+  #:use-module (guix monads)
+  #:export (%test-mcron))
+
+;;;
+;;; Mcron.
+;;;
+
+(define %mcron-os
+  ;; System with an mcron service, with one mcron job for "root" and one mcron
+  ;; job for an unprivileged user.
+  (let ((job1 #~(job '(next-second '(0 5 10 15 20 25 30 35 40 45 50 55))
+                     (lambda ()
+                       (unless (file-exists? "witness")
+                        (call-with-output-file "witness"
+                          (lambda (port)
+                            (display (list (getuid) (getgid)) port)))))))
+        (job2 #~(job next-second-from
+                     (lambda ()
+                       (call-with-output-file "witness"
+                         (lambda (port)
+                           (display (list (getuid) (getgid)) port))))
+                     #:user "alice"))
+        (job3 #~(job next-second-from             ;to test $PATH
+                     "touch witness-touch")))
+    (simple-operating-system
+     (service mcron-service-type
+              (mcron-configuration (jobs (list job1 job2 job3)))))))
+
+(define (run-mcron-test name)
+  (define os
+    (marionette-operating-system
+     %mcron-os
+     #:imported-modules '((gnu services herd)
+                          (guix combinators))))
+
+  (define test
+    (with-imported-modules '((gnu build marionette))
+      #~(begin
+          (use-modules (gnu build marionette)
+                       (srfi srfi-64)
+                       (ice-9 match))
+
+          (define marionette
+            (make-marionette (list #$(virtual-machine os))))
+
+          (test-runner-current (system-test-runner #$output))
+          (test-begin "mcron")
+
+          (test-assert "service running"
+            (marionette-eval
+             '(begin
+                (use-modules (gnu services herd))
+                (start-service 'mcron))
+             marionette))
+
+          ;; Make sure root's mcron job runs, has its cwd set to "/root", and
+          ;; runs with the right UID/GID.
+          (test-equal "root's job"
+            '(0 0)
+            (wait-for-file "/root/witness" marionette))
+
+          ;; Likewise for Alice's job.  We cannot know what its GID is since
+          ;; it's chosen by 'groupadd', but it's strictly positive.
+          (test-assert "alice's job"
+            (match (wait-for-file "/home/alice/witness" marionette)
+              ((1000 gid)
+               (>= gid 100))))
+
+          ;; Last, the job that uses a command; allows us to test whether
+          ;; $PATH is sane.
+          (test-equal "root's job with command"
+            ""
+            (wait-for-file "/root/witness-touch" marionette
+                           #:read '(@ (ice-9 rdelim) read-string)))
+
+          ;; Make sure the 'schedule' action is accepted.
+          (test-equal "schedule action"
+            '(#t)                                 ;one value, #t
+            (marionette-eval '(with-shepherd-action 'mcron ('schedule) result
+                                result)
+                             marionette))
+
+          (test-end))))
+
+  (gexp->derivation name test))
+
+(define %test-mcron
+  (system-test
+   (name "mcron")
+   (description "Make sure the mcron service works as advertised.")
+   (value (run-mcron-test name))))