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-rw-r--r--tests/graph.scm20
1 files changed, 19 insertions, 1 deletions
diff --git a/tests/graph.scm b/tests/graph.scm
index 00fd37243c..5faa19298a 100644
--- a/tests/graph.scm
+++ b/tests/graph.scm
@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2015, 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -271,6 +271,24 @@ edges."
                           (list txt out))
                   (equal? edges `((,txt ,out)))))))))))
 
+(test-assert "module graph"
+  (let-values (((backend nodes+edges) (make-recording-backend)))
+    (run-with-store %store
+      (export-graph '((gnu packages guile)) 'port
+                    #:node-type %module-node-type
+                    #:backend backend))
+
+    (let-values (((nodes edges) (nodes+edges)))
+      (and (member '(gnu packages guile)
+                   (match nodes
+                     (((ids labels) ...) ids)))
+           (->bool (and (member (list '(gnu packages guile)
+                                      '(gnu packages libunistring))
+                                edges)
+                        (member (list '(gnu packages guile)
+                                      '(gnu packages bdw-gc))
+                                edges)))))))
+
 (test-assert "node-edges"
   (run-with-store %store
     (let ((packages (fold-packages cons '())))