@Test
public void testGetBondLength() {

    PharmacophoreAtom patom1 = new PharmacophoreAtom("[CX2]N", "Amine", new Point3d(0, 0, 0));
    PharmacophoreAtom patom2 = new PharmacophoreAtom("c1ccccc1", "Aromatic", new Point3d(1, 1, 1));
    PharmacophoreBond pbond = new PharmacophoreBond(patom1, patom2);
    Assert.assertEquals(1.732051, pbond.getBondLength(), 0.00001);
}