public void testRandomized() {
Graph g = new PrimaryGraph();
Node root1 = Generators.createRandomTree(g, 10, Direction.OUT);
Node root2 = Generators.createRandomTree(g, 10, Direction.IN);
Clusterer cc = Clusterers.connectedComponents(g);
assertEquals(2, cc.getClusters().size());
g.newEdge(root1, root2);
cc = Clusterers.connectedComponents(g);
assertEquals(1, cc.getClusters().size());
}
public void test() {
Graph g = new PrimaryGraph();
Node[] n = g.newNodes(0, 1, 2, 3, 4, 5, 6, 7, 8);
g.newEdge(n[0], n[1]);
g.newEdge(n[1], n[2]);
g.newEdge(n[2], n[1]);
g.newEdge(n[3], n[4]);
g.newEdge(n[4], n[5]);
g.newEdge(n[5], n[3]);
g.newEdge(n[7], n[6]);
g.newEdge(n[8], n[7]);
Clusterer scc = Clusterers.stronglyConnectedComponents(g);
assertEquals(6, scc.getClusters().size());
Set<Set<Node>> clusters = new HashSet<Set<Node>>();
for (Object c : scc.getClusters()) {
clusters.add(new HashSet<Node>(scc.getCluster(c)));
}
assertTrue(clusters.contains(new HashSet<Node>(Arrays.asList(n[1], n[2]))));
assertTrue(clusters.contains(new HashSet<Node>(Arrays.asList(n[0]))));
assertTrue(clusters.contains(new HashSet<Node>(Arrays.asList(n[3], n[4], n[5]))));
assertTrue(clusters.contains(new HashSet<Node>(Arrays.asList(n[6]))));
assertTrue(clusters.contains(new HashSet<Node>(Arrays.asList(n[7]))));
}
public void test() {
Graph g1 = new PrimaryGraph();
Node[] n1 = g1.newNodes(2);
g1.newEdge(n1[0], n1[1]);
Graph g2 = new PrimaryGraph();
Node[] n2 = g2.newNodes(2);
g2.newEdge(n2[0], n2[1]);
SecondaryGraph sg = new SecondaryGraph();
sg.adoptGraph(g1);
sg.adoptGraph(g2);
Clusterer cc = Clusterers.connectedComponents(sg);
Collection<Object> components = cc.getClusters();
assertEquals(2, components.size());
Iterator<Object> iterator = components.iterator();
Object c1 = iterator.next();
Object c2 = iterator.next();
assertTrue(c1 != c2);
assertTrue(components.contains(c1));
assertTrue(components.contains(c2));
Collection<Node> comp1 = cc.getCluster(c1);
assertTrue(comp1.containsAll(Arrays.asList(n1)));
Collection<Node> comp2 = cc.getCluster(c2);
assertTrue(comp2.containsAll(Arrays.asList(n2)));
assertTrue(cc.getCluster(c1).contains(n1[0]));
assertTrue(cc.getCluster(c2).contains(n2[0]));
}