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
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
|
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015-2019, 2022, 2023 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))
(test-begin "services")
(test-equal "services, default value"
'(42 123 234 error)
(let* ((t1 (service-type (name 't1) (extensions '())
(description "")))
(t2 (service-type (name 't2) (extensions '())
(description "")
(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 '()) (description "")
(compose +) (extend *)))
(t2 (service-type (name 't2) (description "")
(extensions
(list (service-extension t1 (const '()))))
(compose +) (extend *)))
(t3 (service-type (name 't3) (description "")
(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 '()) (description "")
(compose concatenate)
(extend cons)))
(t2 (service-type (name 't2) (description "")
(extensions
(list (service-extension t1
(cut list 'xyz <>))))
(compose (cut reduce + 0 <>))
(extend *)))
(t3 (service-type (name 't3) (description "")
(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 '()) (description "")
(compose concatenate)
(extend cons)))
(t2 (service-type (name 't2) (description "")
(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 '()) (description "")))
(t2 (service-type (name 't2) (description "")
(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 '()) (description "")
(default-value 'dflt)
(compose concatenate)
(extend cons)))
(t2 (service-type (name 't2) (description "")
(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 '()) (description "")
(default-value 'dflt)
(compose concatenate)
(extend cons)))
(t2 (service-type (name 't2) (description "")
(default-value 'dflt2)
(compose concatenate)
(extend cons)
(extensions
(list (service-extension t1 list)))))
(t3 (service-type (name 't3) (description "")
(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 '()) (description "")))
(t2 (service-type (name 't2) (description "")
(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) '() #f #t)
(live-service '(bar) '() #f #f)
(live-service '(root) '() #f #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) #f #t)
(live-service '(bar) '() #f #t) ;still used!
(live-service '(baz) '() #f #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) #f #t) ;obsolete
(live-service '(bar) '(baz) #f #t) ;obsolete
(live-service '(baz) '() #f #t)) ;obsolete
(list (shepherd-service (provision '(qux))
(start #t)))))
(lambda (unload restart)
(list (map live-service-provision unload)
(map shepherd-service-provision restart)))))
(test-equal "shepherd-service-upgrade: transient service"
;; Transient service must not be unloaded:
;; <https://issues.guix.gnu.org/54812>.
'(((foo)) ;unload
((qux))) ;restart
(call-with-values
(lambda ()
(shepherd-service-upgrade
(list (live-service '(sshd-42) '() #t 42) ;transient
(live-service '(foo) '() #f #t) ;obsolete
(live-service '(qux) '() #f #t)) ;running
(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-equal "modify-services: do nothing"
'(1 2 3) ;note: service order must be preserved
(let* ((t1 (service-type (name 't1)
(extensions '())
(description "")))
(t2 (service-type (name 't2)
(extensions '())
(description "")))
(t3 (service-type (name 't3)
(extensions '())
(description "")))
(services (list (service t1 1) (service t2 2) (service t3 3))))
(map service-value
(modify-services services))))
(test-equal "modify-services: delete service"
'(1 4) ;note: service order must be preserved
(let* ((t1 (service-type (name 't1)
(extensions '())
(description "")))
(t2 (service-type (name 't2)
(extensions '())
(description "")))
(t3 (service-type (name 't3)
(extensions '())
(description "")))
(t4 (service-type (name 't4)
(extensions '())
(description "")))
(services (list (service t1 1) (service t2 2)
(service t3 3) (service t4 4))))
(map service-value
(modify-services services
(delete t3)
(delete t2)))))
(test-error "modify-services: delete non-existing service"
#t
(let* ((t1 (service-type (name 't1)
(extensions '())
(description "")))
(t2 (service-type (name 't2)
(extensions '())
(description "")))
(t3 (service-type (name 't2)
(extensions '())
(description "")))
(services (list (service t1 1) (service t2 2))))
(modify-services services
(delete t3))))
(test-equal "modify-services: change value"
'(11 2 33) ;note: service order must be preserved
(let* ((t1 (service-type (name 't1)
(extensions '())
(description "")))
(t2 (service-type (name 't2)
(extensions '())
(description "")))
(t3 (service-type (name 't3)
(extensions '())
(description "")))
(services (list (service t1 1) (service t2 2) (service t3 3))))
(map service-value
(modify-services services
(t1 value => 11)
(t3 value => 33)))))
(test-error "modify-services: change value for non-existing service"
#t
(let* ((t1 (service-type (name 't1)
(extensions '())
(description "")))
(t2 (service-type (name 't2)
(extensions '())
(description "")))
(t3 (service-type (name 't3)
(extensions '())
(description "")))
(services (list (service t1 1) (service t3 3))))
(map service-value
(modify-services services
(t2 value => 22)))))
(test-error "modify-services: delete then modify"
#t
(let* ((t1 (service-type (name 't1)
(extensions '())
(description "")))
(t2 (service-type (name 't2)
(extensions '())
(description "")))
(t3 (service-type (name 't3)
(extensions '())
(description "")))
(services (list (service t1 1) (service t2 2) (service t3 3))))
(map service-value
(modify-services services
(delete t2)
(t2 value => 22)))))
(test-equal "modify-services: modify then delete"
'(2 3)
(let* ((t1 (service-type (name 't1)
(extensions '())
(description "")))
(t2 (service-type (name 't2)
(extensions '())
(description "")))
(t3 (service-type (name 't3)
(extensions '())
(description "")))
(services (list (service t1 1) (service t2 2) (service t3 3))))
(map service-value
(modify-services services
(t1 value => 11)
(delete t1)))))
(test-equal "modify-services: delete multiple services of the same type"
'(1 3)
(let* ((t1 (service-type (name 't1)
(extensions '())
(description "")))
(t2 (service-type (name 't2)
(extensions '())
(description "")))
(t3 (service-type (name 't3)
(extensions '())
(description "")))
(services (list (service t1 1) (service t2 2)
(service t2 2) (service t3 3))))
(map service-value
(modify-services services
(delete t2)))))
(test-equal "modify-services: modify multiple services of the same type"
'(1 12 13 4)
(let* ((t1 (service-type (name 't1)
(extensions '())
(description "")))
(t2 (service-type (name 't2)
(extensions '())
(description "")))
(t3 (service-type (name 't3)
(extensions '())
(description "")))
(services (list (service t1 1) (service t2 2)
(service t2 3) (service t3 4))))
(map service-value
(modify-services services
(t2 value => (+ value 10))))))
(test-end)
|
