@Test
public void getConnectivityTest() {

    int n = 3;
    Graph g = new Graph(n);
    g.connectionTable = new int[][]{{0, 1, 0}, {1, 0, 1}, {0, 1, 0}};
    MockRefiner refiner = new MockRefiner(g);
    Assert.assertEquals(1, refiner.getConnectivity(0, 1));
}