diff --git a/test/graph_test.cc b/test/graph_test.cc
--- a/test/graph_test.cc
+++ b/test/graph_test.cc
@@ -38,6 +38,9 @@
   checkGraphEdgeList(G, 0);
   checkGraphArcList(G, 0);
 
+  G.reserveNode(3);
+  G.reserveEdge(3);
+
   Node
     n1 = G.addNode(),
     n2 = G.addNode(),