summaryrefslogtreecommitdiff
path: root/tests/services.scm
blob: 8993c3dafcb198cc608bcaec16f9c287c7d77456 (about) (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015, 2016 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))

(define live-service
  (@@ (gnu services herd) live-service))


(test-begin "services")

(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-parameters 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 "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"
  '(((bar))                                       ;unload
    ((bar) (baz)))                                ;load
  (call-with-values
      (lambda ()
        ;; Here 'foo' is not upgraded because it is still running, whereas
        ;; 'bar' is upgraded 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 load)
      (list (map live-service-provision unload)
            (map shepherd-service-provision load)))))

(test-equal "shepherd-service-upgrade: service depended on is not unloaded"
  '(((baz))                                       ;unload
    ())                                           ;load
  (call-with-values
      (lambda ()
        ;; Service 'bar' is not among the target services; yet, it must not be
        ;; unloaded because 'foo' depends on it.
        (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 load)
      (list (map live-service-provision unload)
            (map shepherd-service-provision load)))))

(test-equal "shepherd-service-upgrade: obsolete services that depend on each other"
  '(((foo) (bar) (baz))                           ;unload
    ((qux)))                                      ;load
  (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 load)
      (list (map live-service-provision unload)
            (map shepherd-service-provision load)))))

(test-end)