diff -r 289d80c33f04 -r 1a770e9f80b2 src/test/undir_graph_test.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/test/undir_graph_test.cc	Fri Nov 05 00:31:49 2004 +0000
@@ -0,0 +1,27 @@
+// -*- C++ -*-
+
+#include <lemon/undir_graph_extender.h>
+#include <lemon/concept/undir_graph.h>
+#include <lemon/list_graph.h>
+#include <lemon/smart_graph.h>
+#include <lemon/full_graph.h>
+
+#include "test_tools.h"
+
+
+using namespace lemon;
+using namespace lemon::concept;
+
+
+int main() {
+  typedef UndirGraphExtender<ListGraphBase> UndirListGraphBase;
+
+  function_requires< BaseIterableUndirGraphConcept<UndirListGraphBase> >();
+
+  typedef IterableUndirGraphExtender<
+    AlterableUndirGraphExtender<UndirListGraphBase> > IterableUndirListGraph;
+
+  function_requires< IterableUndirGraphConcept<IterableUndirListGraph> >();
+
+  return 0;
+}