/** RG-1: Tests if a all matchings are correct (on some random graphs). */
@Test
public void testRandomGraphs() {
Random rnd = new Random();
rnd.setSeed(54321);
for (int i = 1; i < 50; i++) {
int vertexCount = 2 + rnd.nextInt(i),
edgeCount = vertexCount + rnd.nextInt(vertexCount * (vertexCount - 1)) / 2,
subVertexCount = 1 + rnd.nextInt(vertexCount);
DirectedGraph<Integer, DefaultEdge>
g1 = SubgraphIsomorphismTestUtils.randomGraph(vertexCount, edgeCount, i),
g2 = SubgraphIsomorphismTestUtils.randomSubgraph(g1, subVertexCount, i);
VF2SubgraphIsomorphismInspector<Integer, DefaultEdge> vf2 =
new VF2SubgraphIsomorphismInspector<>(g1, g2);
SubgraphIsomorphismTestUtils.showLog(i + ": " + vertexCount + "v, " + edgeCount + "e ");
for (Iterator<GraphMapping<Integer, DefaultEdge>> mappings = vf2.getMappings();
mappings.hasNext(); ) {
assertEquals(true, SubgraphIsomorphismTestUtils.isCorrectMatching(mappings.next(), g1, g2));
SubgraphIsomorphismTestUtils.showLog(".");
}
SubgraphIsomorphismTestUtils.showLog("\n");
}
}
/** RG-2: Tests if all matchings are correct and if every matching is found (on random graphs). */
@Test
public void testRandomGraphsExhaustive() {
Random rnd = new Random();
rnd.setSeed(12345);
for (int i = 1; i < 100; i++) {
int vertexCount = 3 + rnd.nextInt(5),
edgeCount = rnd.nextInt(vertexCount * (vertexCount - 1)),
subVertexCount = 2 + rnd.nextInt(vertexCount),
subEdgeCount = rnd.nextInt(subVertexCount * (subVertexCount - 1));
DirectedGraph<Integer, DefaultEdge>
g1 = SubgraphIsomorphismTestUtils.randomGraph(vertexCount, edgeCount, i),
g2 = SubgraphIsomorphismTestUtils.randomGraph(subVertexCount, subEdgeCount, i);
VF2SubgraphIsomorphismInspector<Integer, DefaultEdge> vf2 =
new VF2SubgraphIsomorphismInspector<>(g1, g2);
SubgraphIsomorphismTestUtils.showLog(i + ": " + vertexCount + "v, " + edgeCount + "e ....\n");
assertEquals(true, SubgraphIsomorphismTestUtils.containsAllMatchings(vf2, g1, g2));
}
}