@Test
public void getHalfMatrixStringTest() {

    int n = 3;
    Graph g = new Graph(n);
    g.connectionTable = new int[][]{{0, 1, 1}, {1, 0, 0}, {1, 0, 0}};
    MockRefiner refiner = new MockRefiner(g);
    String hms = refiner.getHalfMatrixString();
    String expected = "110";
    Assert.assertEquals(expected, hms);
}