public TopologicalSorterTest() {
}
@Before
public void setUp() {
OrderRelation a = newDirectedEdge("A");
OrderRelation b = newDirectedEdge("B");
OrderRelation c = newDirectedEdge("C");
OrderRelation d = newDirectedEdge("D");
OrderRelation e = newDirectedEdge("E");
OrderRelation f = newDirectedEdge("F");
OrderRelation g = newDirectedEdge("G");
OrderRelation h = newDirectedEdge("H");
OrderRelation i = newDirectedEdge("I");
OrderRelation j = newDirectedEdge("J");
OrderRelation k = newDirectedEdge("K");
OrderRelation l = newDirectedEdge("L");
OrderRelation m = newDirectedEdge("M");
connect(b, a);
connect(c, b);
connect(b, d);
connect(c, d);
connect(d, e);