@Before
public void setUp() {
ExtendableMap aMap = new ExtendableMap();
aMap.addBidirectionalLink("A", "B", 5.0);
aMap.addBidirectionalLink("A", "C", 6.0);
aMap.addBidirectionalLink("B", "C", 4.0);
aMap.addBidirectionalLink("C", "D", 7.0);
aMap.addUnidirectionalLink("B", "E", 14.0);
af = MapFunctionFactory.getActionsFunction(aMap);
rf = MapFunctionFactory.getResultFunction();