@Test
public void testCompare_BondOrderSum() {

    DebugAtomType at1 = new DebugAtomType("C");
    DebugAtomType at2 = new DebugAtomType("C");
    at1.setBondOrderSum(1.5);
    at2.setBondOrderSum(1.5);
    Assert.assertTrue(at1.compare(at2));
}