}
}
public void testNetworkLinker() {
int numVerticesBefore = graph.getVertices().size();
NetworkLinker nl = new NetworkLinker(graph);
nl.createLinkage();
int numVerticesAfter = graph.getVertices().size();
assertEquals(4, numVerticesAfter - numVerticesBefore);
Collection<Edge> outgoing = station1.getOutgoing();
assertTrue(outgoing.size() == 2);
Edge edge = outgoing.iterator().next();