From 80a67734834a0981ca65cf1757a7d8408d02f1fd Mon Sep 17 00:00:00 2001
From: Ludovic Courtès <ludo@gnu.org>
Date: Wed, 14 Oct 2015 18:40:33 +0200
Subject: 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.
---
tests/services.scm | 10 ++++++++++
1 file changed, 10 insertions(+)
(limited to 'tests')
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)
--
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