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-rw-r--r--tests/services.scm29
1 files changed, 29 insertions, 0 deletions
diff --git a/tests/services.scm b/tests/services.scm
index b4e2cb0b30..7d2e31b3a9 100644
--- a/tests/services.scm
+++ b/tests/services.scm
@@ -18,6 +18,7 @@
(define-module (test-services)
#:use-module (gnu services)
+ #:use-module (gnu services dmd)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-34)
@@ -25,6 +26,25 @@
(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,
@@ -85,6 +105,15 @@
(fold-services (list s) #:target-type t1)
#f)))
+(test-assert "dmd-service-back-edges"
+ (let* ((s1 (dmd-service (provision '(s1)) (start #f)))
+ (s2 (dmd-service (provision '(s2)) (requirement '(s1)) (start #f)))
+ (s3 (dmd-service (provision '(s3)) (requirement '(s1 s2)) (start #f)))
+ (e (dmd-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-end)