;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2015, 2016, 2017, 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-services) #:use-module (gnu services) #:use-module (gnu services herd) #:use-module (gnu services shepherd) #:use-module (srfi srfi-1) #:use-module (srfi srfi-26) #:use-module (srfi srfi-34) #:use-module (srfi srfi-64) #:use-module (ice-9 match)) (define live-service (@@ (gnu services herd) live-service)) (test-begin "services") (test-equal "services, default value" '(42 123 234 error) (let* ((t1 (service-type (name 't1) (extensions '()))) (t2 (service-type (name 't2) (extensions '()) (default-value 42)))) (list (service-value (service t2)) (service-value (service t2 123)) (service-value (service t1 234)) (guard (c ((missing-value-service-error? c) 'error)) (service t1))))) (test-assert "service-back-edges" (let* ((t1 (service-type (name 't1) (extensions '()) (compose +) (extend *))) (t2 (service-type (name 't2) (extensions (list (service-extension t1 (const '())))) (compose +) (extend *))) (t3 (service-type (name 't3) (extensions (list (service-extension t2 identity) (service-extension t1 list))))) (s1 (service t1 #t)) (s2 (service t2 #t)) (s3 (service t3 #t)) (e (service-back-edges (list s1 s2 s3)))) (and (lset= eq? (e s1) (list s2 s3)) (lset= eq? (e s2) (list s3)) (null? (e s3))))) (test-equal "fold-services" ;; Make sure 'fold-services' returns the right result. The numbers come ;; from services of type T3; 'xyz 60' comes from the service of type T2, ;; where 60 = 15 × 4 = (1 + 2 + 3 + 4 + 5) × 4. '(initial-value 5 4 3 2 1 xyz 60) (let* ((t1 (service-type (name 't1) (extensions '()) (compose concatenate) (extend cons))) (t2 (service-type (name 't2) (extensions (list (service-extension t1 (cut list 'xyz <>)))) (compose (cut reduce + 0 <>)) (extend *))) (t3 (service-type (name 't3) (extensions (list (service-extension t2 identity) (service-extension t1 list))))) (r (fold-services (cons* (service t1 'initial-value) (service t2 4) (map (lambda (x) (service t3 x)) (iota 5 1))) #:target-type t1))) (and (eq? (service-kind r) t1) (service-value r)))) (test-assert "fold-services, ambiguity" (let* ((t1 (service-type (name 't1) (extensions '()) (compose concatenate) (extend cons))) (t2 (service-type (name 't2) (extensions (list (service-extension t1 list))))) (s (service t2 42))) (guard (c ((ambiguous-target-service-error? c) (and (eq? (ambiguous-target-service-error-target-type c) t1) (eq? (ambiguous-target-service-error-service c) s)))) (fold-services (list (service t1 'first) (service t1 'second) s) #:target-type t1) #f))) (test-assert "fold-services, missing target" (let* ((t1 (service-type (name 't1) (extensions '()))) (t2 (service-type (name 't2) (extensions (list (service-extension t1 list))))) (s (service t2 42))) (guard (c ((missing-target-service-error? c) (and (eq? (missing-target-service-error-target-type c) t1) (eq? (missing-target-service-error-service c) s)))) (fold-services (list s) #:target-type t1) #f))) (test-assert "instantiate-missing-services" (let* ((t1 (service-type (name 't1) (extensions '()) (default-value 'dflt) (compose concatenate) (extend cons))) (t2 (service-type (name 't2) (extensions (list (service-extension t1 list))))) (s1 (service t1 'hey!)) (s2 (service t2 42))) (and (lset= equal? (list (service t1) s2) (instantiate-missing-services (list s2))) (equal? (list s1 s2) (instantiate-missing-services (list s1 s2)))))) (test-assert "instantiate-missing-services, indirect" (let* ((t1 (service-type (name 't1) (extensions '()) (default-value 'dflt) (compose concatenate) (extend cons))) (t2 (service-type (name 't2) (extensions '()) (default-value 'dflt2) (compose concatenate) (extend cons) (extensions (list (service-extension t1 list))))) (t3 (service-type (name 't3) (extensions (list (service-extension t2 list))))) (s1 (service t1)) (s2 (service t2)) (s3 (service t3 42)) (== (cut lset= equal? <...>))) (and (== (list s1 s2 s3) (instantiate-missing-services (list s3))) (== (list s1 s2 s3) (instantiate-missing-services (list s1 s3))) (== (list s1 s2 s3) (instantiate-missing-services (list s2 s3)))))) (test-assert "instantiate-missing-services, no default value" (let* ((t1 (service-type (name 't1) (extensions '()))) (t2 (service-type (name 't2) (extensions (list (service-extension t1 list))))) (s (service t2 42))) (guard (c ((missing-target-service-error? c) (and (eq? (missing-target-service-error-target-type c) t1) (eq? (missing-target-service-error-service c) s)))) (instantiate-missing-services (list s)) #f))) (test-assert "shepherd-service-lookup-procedure" (let* ((s1 (shepherd-service (provision '(s1 s1b)) (start #f))) (s2 (shepherd-service (provision '(s2 s2b)) (start #f))) (s3 (shepherd-service (provision '(s3 s3b s3c)) (start #f))) (lookup (shepherd-service-lookup-procedure (list s1 s2 s3)))) (and (eq? (lookup 's1) (lookup 's1b) s1) (eq? (lookup 's2) (lookup 's2b) s2) (eq? (lookup 's3) (lookup 's3b) s3)))) (test-assert "shepherd-service-back-edges" (let* ((s1 (shepherd-service (provision '(s1)) (start #f))) (s2 (shepherd-service (provision '(s2)) (requirement '(s1)) (start #f))) (s3 (shepherd-service (provision '(s3)) (requirement '(s1 s2)) (start #f))) (e (shepherd-service-back-edges (list s1 s2 s3)))) (and (lset= eq? (e s1) (list s2 s3)) (lset= eq? (e s2) (list s3)) (null? (e s3))))) (test-equal "shepherd-service-upgrade: nothing to do" '(() ()) (call-with-values (lambda () (shepherd-service-upgrade '() '())) list)) (test-equal "shepherd-service-upgrade: one unchanged, one upgraded, one new" '(() ;unload ((foo))) ;restart (call-with-values (lambda () ;; Here 'foo' is replaced and must be explicitly restarted later ;; because it is still running, whereas 'bar' is upgraded right away ;; because it is not currently running. 'baz' is loaded because it's ;; a new service. (shepherd-service-upgrade (list (live-service '(foo) '() #t) (live-service '(bar) '() #f) (live-service '(root) '() #t)) ;essential! (list (shepherd-service (provision '(foo)) (start #t)) (shepherd-service (provision '(bar)) (start #t)) (shepherd-service (provision '(baz)) (start #t))))) (lambda (unload restart) (list (map live-service-provision unload) (map shepherd-service-provision restart))))) (test-equal "shepherd-service-upgrade: service depended on is not unloaded" '(((baz)) ;unload ((foo))) ;restart (call-with-values (lambda () ;; Service 'bar' is not among the target services; yet, it must not be ;; unloaded because 'foo' depends on it. 'foo' gets replaced but it ;; must be restarted manually. (shepherd-service-upgrade (list (live-service '(foo) '(bar) #t) (live-service '(bar) '() #t) ;still used! (live-service '(baz) '() #t)) (list (shepherd-service (provision '(foo)) (start #t))))) (lambda (unload restart) (list (map live-service-provision unload) (map shepherd-service-provision restart))))) (test-equal "shepherd-service-upgrade: obsolete services that depend on each other" '(((foo) (bar) (baz)) ;unload ()) ;restart (call-with-values (lambda () ;; 'foo', 'bar', and 'baz' depend on each other, but all of them are ;; obsolete, and thus should be unloaded. (shepherd-service-upgrade (list (live-service '(foo) '(bar) #t) ;obsolete (live-service '(bar) '(baz) #t) ;obsolete (live-service '(baz) '() #t)) ;obsolete (list (shepherd-service (provision '(qux)) (start #t))))) (lambda (unload restart) (list (map live-service-provision unload) (map shepherd-service-provision restart))))) (test-eq "lookup-service-types" system-service-type (and (null? (lookup-service-types 'does-not-exist-at-all)) (match (lookup-service-types 'system) ((one) one) (x x)))) (test-end)