diff --git a/test/skeleton/ring.dot b/test/skeleton/ring.dot
new file mode 100644
index 0000000000000000000000000000000000000000..80cff9f13c7134d3d5f00c5b0a9e06e7fdee50d4
--- /dev/null
+++ b/test/skeleton/ring.dot
@@ -0,0 +1,11 @@
+graph ring {
+ p1 [algo="some_algo.ml"]
+ p2 [algo="some_algo.ml"]
+ p3 [algo="some_algo.ml"]
+ p4 [algo="some_algo.ml"]
+ p5 [algo="some_algo.ml"]
+ p6 [algo="some_algo.ml"]
+ p7 [algo="some_algo.ml"]
+
+ p1 -- p2 -- p3 -- p4 -- p5 -- p6 -- p7 -- p1 
+}