diff -r c160bf9f18ef -r 580af8cf2f6a test/digraph_test.cc
--- a/test/digraph_test.cc	Thu Nov 05 10:01:02 2009 +0100
+++ b/test/digraph_test.cc	Thu Nov 05 10:23:16 2009 +0100
@@ -36,6 +36,9 @@
   checkGraphNodeList(G, 0);
   checkGraphArcList(G, 0);
 
+  G.reserveNode(3);
+  G.reserveArc(4);
+
   Node
     n1 = G.addNode(),
     n2 = G.addNode(),
@@ -284,6 +287,14 @@
   G.addArc(G.addNode(), G.addNode());
 
   snapshot.restore();
+  snapshot.save(G);
+
+  checkGraphNodeList(G, 4);
+  checkGraphArcList(G, 4);
+
+  G.addArc(G.addNode(), G.addNode());
+
+  snapshot.restore();
 
   checkGraphNodeList(G, 4);
   checkGraphArcList(G, 4);
@@ -487,7 +498,12 @@
 void checkFullDigraph(int num) {
   typedef FullDigraph Digraph;
   DIGRAPH_TYPEDEFS(Digraph);
+
   Digraph G(num);
+  check(G.nodeNum() == num && G.arcNum() == num * num, "Wrong size");
+
+  G.resize(num);
+  check(G.nodeNum() == num && G.arcNum() == num * num, "Wrong size");
 
   checkGraphNodeList(G, num);
   checkGraphArcList(G, num * num);