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authorLudovic Courtès <ludo@gnu.org>2015-10-14 18:40:33 +0200
committerLudovic Courtès <ludo@gnu.org>2015-10-14 21:39:06 +0200
commit80a67734834a0981ca65cf1757a7d8408d02f1fd (patch)
tree4f622b3c5a725544736a75eaee52c6b4db6b29e0 /tests
parentc5d735f798e0e58774b9ce0c6197695bc6f0daa9 (diff)
downloadguix-80a67734834a0981ca65cf1757a7d8408d02f1fd.tar.gz
services: Add 'dmd-service-back-edges'.
* gnu/services/dmd.scm (dmd-service-back-edges): New procedure.
* tests/services.scm ("dmd-service-back-edges"): New test.
Diffstat (limited to 'tests')
-rw-r--r--tests/services.scm10
1 files changed, 10 insertions, 0 deletions
diff --git a/tests/services.scm b/tests/services.scm
index ae2d999fee..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)
@@ -104,6 +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)