diff -r aa8c2f05b9ab -r a7d5fe18d8f9 src/work/marci/merge_node_graph_wrapper_test.cc
--- a/src/work/marci/merge_node_graph_wrapper_test.cc	Thu Nov 18 10:17:19 2004 +0000
+++ b/src/work/marci/merge_node_graph_wrapper_test.cc	Thu Nov 18 14:37:22 2004 +0000
@@ -9,6 +9,12 @@
 
 using namespace lemon;
 
+class Graph3 : ListGraph {
+public:
+  class Node : public ListGraph::Node { };
+  class Edge { };
+};
+
 int main() {
   typedef SmartGraph Graph1;
   typedef ListGraph Graph2;
@@ -38,4 +44,37 @@
   for (Graph2::NodeIt n(h); n!=INVALID; ++n) { 
     cout << nm[n] << endl;
   }
+
+  gw.print();
+
+  {
+//    typedef SmartGraph Graph1;
+    typedef ListGraph Graph1;
+    typedef ListGraph Graph2;
+    Graph1 g;
+    Graph2 h;
+    typedef MergeNodeGraphWrapper<Graph1, Graph2> GW;
+    GW gw(g, h);    
+    gw.print();
+  }
+  {
+//    typedef SmartGraph Graph1;
+    typedef Graph3 Graph1;
+    typedef ListGraph Graph2;
+    Graph1 g;
+    Graph2 h;
+    typedef MergeNodeGraphWrapper<Graph1, Graph2> GW;
+    GW gw(g, h);    
+    gw.print();
+  }
+  {
+//    typedef SmartGraph Graph1;
+    typedef ListGraph Graph1;
+    typedef Graph3 Graph2;
+    Graph1 g;
+    Graph2 h;
+    typedef MergeNodeGraphWrapper<Graph1, Graph2> GW;
+    GW gw(g, h);    
+    gw.print();
+  }
 }