public GraphMock(){
edgeList = new ArrayList<T>();
nodeList = new ArrayList<Node>();
Node node1 = new Node(BigDecimal.valueOf(100),BigDecimal.valueOf(100));
Node node2 = new Node(BigDecimal.valueOf(500),BigDecimal.valueOf(50));
Node node3 = new Node(BigDecimal.valueOf(300),BigDecimal.valueOf(300));
Node node4 = new Node(BigDecimal.valueOf(100),BigDecimal.valueOf(10));
nodeList.add(node1);
nodeList.add(node2);
nodeList.add(node3);
nodeList.add(node4);