{
List models = TestInference.createTestModels ();
for (Iterator mdlIt = models.iterator (); mdlIt.hasNext ();) {
UndirectedModel mdl = (UndirectedModel) mdlIt.next ();
UndirectedGraph g = Graphs.mdlToGraph (mdl);
Set vertices = g.vertexSet ();
// check the number of vertices
assertEquals (mdl.numVariables (), vertices.size ());
// check the number of edges