279 lines
10 KiB
Scheme
279 lines
10 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2019 Jakob L. Kreuze <zerodaysfordays@sdf.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu tests reconfigure)
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#:use-module (gnu bootloader)
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#:use-module (gnu services shepherd)
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#:use-module (gnu system)
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#:use-module (gnu system accounts)
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#:use-module (gnu system shadow)
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#:use-module (gnu system vm)
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#:use-module (gnu tests)
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#:use-module (guix derivations)
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#:use-module (guix gexp)
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#:use-module (guix monads)
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#:use-module (guix scripts system reconfigure)
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#:use-module (guix store)
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#:export (%test-switch-to-system
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%test-upgrade-services
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%test-install-bootloader))
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;;; Commentary:
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;;;
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;;; Test in-place system reconfiguration: advancing the system generation on a
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;;; running instance of the Guix System.
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;;;
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;;; Code:
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(define* (run-switch-to-system-test)
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"Run a test of an OS running SWITCH-SYSTEM-PROGRAM, which creates a new
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generation of the system profile."
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(define os
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(marionette-operating-system
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(operating-system
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(inherit (simple-operating-system))
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(users (cons (user-account
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(name "jakob")
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(group "users")
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(home-directory "/home/jakob"))
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%base-user-accounts)))
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#:imported-modules '((gnu services herd)
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(guix combinators))))
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(define vm (virtual-machine os))
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(define (test script)
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(with-imported-modules '((gnu build marionette))
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#~(begin
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(use-modules (gnu build marionette)
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(srfi srfi-64))
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(define marionette
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(make-marionette (list #$vm)))
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;; Return the names of the generation symlinks on MARIONETTE.
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(define (system-generations marionette)
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(marionette-eval
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'(begin
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(use-modules (ice-9 ftw)
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(srfi srfi-1))
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(let* ((profile-dir "/var/guix/profiles/")
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(entries (map first (cddr (file-system-tree profile-dir)))))
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(remove (lambda (entry)
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(member entry '("per-user" "system")))
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entries)))
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marionette))
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(test-runner-current (system-test-runner #$output))
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(test-begin "switch-to-system")
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(let ((generations-prior (system-generations marionette)))
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(test-assert "script successfully evaluated"
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(marionette-eval
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'(primitive-load #$script)
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marionette))
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(test-equal "script created new generation"
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(length (system-generations marionette))
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(1+ (length generations-prior)))
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(test-assert "script activated the new generation"
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(and (eqv? 'symlink
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(marionette-eval
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'(stat:type (lstat "/run/current-system"))
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marionette))
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(string= #$os
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(marionette-eval
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'(readlink "/run/current-system")
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marionette))))
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(test-assert "script activated user accounts"
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(marionette-eval
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'(begin
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(use-modules (rnrs io ports))
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(string-contains (call-with-input-file "/etc/passwd"
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get-string-all)
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"jakob"))
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marionette)))
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(test-end))))
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(gexp->derivation "switch-to-system" (test (switch-system-program os))))
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(define* (run-upgrade-services-test)
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"Run a test of an OS running UPGRADE-SERVICES-PROGRAM, which upgrades the
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Shepherd (PID 1) by unloading obsolete services and loading new services."
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(define os
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(marionette-operating-system
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(simple-operating-system)
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#:imported-modules '((gnu services herd)
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(guix combinators))))
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(define vm (virtual-machine os))
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(define dummy-service
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;; Shepherd service that does nothing, for the sole purpose of ensuring
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;; that it is properly installed and started by the script.
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(shepherd-service (provision '(dummy))
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(start #~(const #t))
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(stop #~(const #t))
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(respawn? #f)))
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(define (test enable-dummy disable-dummy)
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(with-imported-modules '((gnu build marionette))
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#~(begin
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(use-modules (gnu build marionette)
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(srfi srfi-64))
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(define marionette
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(make-marionette (list #$vm)))
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;; Return the names of the running services on MARIONETTE.
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(define (running-services marionette)
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(marionette-eval
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'(begin
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(use-modules (gnu services herd))
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(map live-service-canonical-name (current-services)))
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marionette))
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(test-runner-current (system-test-runner #$output))
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(test-begin "upgrade-services")
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(let ((services-prior (running-services marionette)))
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(test-assert "script successfully evaluated"
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(marionette-eval
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'(primitive-load #$enable-dummy)
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marionette))
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(test-assert "script started new service"
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(and (not (memq 'dummy services-prior))
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(memq 'dummy (running-services marionette))))
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(test-assert "script successfully evaluated"
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(marionette-eval
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'(primitive-load #$disable-dummy)
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marionette))
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(test-assert "script stopped obsolete service"
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(not (memq 'dummy (running-services marionette)))))
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(test-end))))
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(gexp->derivation
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"upgrade-services"
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(let* ((file (shepherd-service-file dummy-service))
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(enable (upgrade-services-program (list file) '(dummy) '() '()))
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(disable (upgrade-services-program '() '() '(dummy) '())))
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(test enable disable))))
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(define* (run-install-bootloader-test)
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"Run a test of an OS running INSTALL-BOOTLOADER-PROGRAM, which installs a
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bootloader's configuration file."
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(define os
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(marionette-operating-system
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(simple-operating-system)
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#:imported-modules '((gnu services herd)
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(guix combinators))))
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(define vm (virtual-machine
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(operating-system os)
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(volatile? #f)))
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(define (test script)
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(with-imported-modules '((gnu build marionette))
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#~(begin
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(use-modules (gnu build marionette)
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(ice-9 regex)
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(srfi srfi-1)
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(srfi srfi-64))
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(define marionette
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(make-marionette (list #$vm)))
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;; Return the system generation paths that have GRUB menu entries.
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(define (generations-in-grub-cfg marionette)
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(let ((grub-cfg (marionette-eval
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'(begin
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(use-modules (rnrs io ports))
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(call-with-input-file "/boot/grub/grub.cfg"
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get-string-all))
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marionette)))
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(map (lambda (parameter)
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(second (string-split (match:substring parameter) #\=)))
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(list-matches "system=[^ ]*" grub-cfg))))
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(test-runner-current (system-test-runner #$output))
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(test-begin "install-bootloader")
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(test-assert "no prior menu entry for system generation"
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(not (member #$os (generations-in-grub-cfg marionette))))
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(test-assert "script successfully evaluated"
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(marionette-eval
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'(primitive-load #$script)
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marionette))
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(test-assert "menu entry created for system generation"
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(member #$os (generations-in-grub-cfg marionette)))
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(test-end))))
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(let* ((bootloader ((compose bootloader-configuration-bootloader
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operating-system-bootloader)
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os))
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;; The typical use-case for 'install-bootloader-program' is to read
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;; the boot parameters for the existing menu entries on the system,
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;; parse them with 'boot-parameters->menu-entry', and pass the
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;; results to 'operating-system-bootcfg'. However, to obtain boot
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;; parameters, we would need to start the marionette, which we should
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;; ideally avoid doing outside of the 'test' G-Expression. Thus, we
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;; generate a bootloader configuration for the script as if there
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;; were no existing menu entries. In the grand scheme of things, this
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;; matters little -- these tests should not make assertions about the
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;; behavior of 'operating-system-bootcfg'.
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(bootcfg (operating-system-bootcfg os '()))
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(bootcfg-file (bootloader-configuration-file bootloader)))
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(gexp->derivation
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"install-bootloader"
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;; Due to the read-only nature of the virtual machines used in the system
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;; test suite, the bootloader installer script is omitted. 'grub-install'
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;; would attempt to write directly to the virtual disk if the
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;; installation script were run.
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(test
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(install-bootloader-program #f #f #f bootcfg bootcfg-file '(#f) "/")))))
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(define %test-switch-to-system
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(system-test
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(name "switch-to-system")
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(description "Create a new generation of the system profile.")
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(value (run-switch-to-system-test))))
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(define %test-upgrade-services
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(system-test
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(name "upgrade-services")
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(description "Upgrade the Shepherd by unloading obsolete services and
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loading new services.")
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(value (run-upgrade-services-test))))
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(define %test-install-bootloader
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(system-test
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(name "install-bootloader")
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(description "Install a bootloader and its configuration file.")
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(value (run-install-bootloader-test))))
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