@Test
public void testGetAngle1() {

    PharmacophoreAtom patom1 = new PharmacophoreAtom("[CX2]N", "Amine", new Point3d(0, 0, 0));
    PharmacophoreAtom patom2 = new PharmacophoreAtom("c1ccccc1", "Aromatic", new Point3d(1, 1, 1));
    PharmacophoreAtom patom3 = new PharmacophoreAtom("C", "Blah", new Point3d(2, 2, 2));
    PharmacophoreAngleBond pbond = new PharmacophoreAngleBond(patom1, patom2, patom3);
    Assert.assertEquals(180, pbond.getBondLength(), 0.00001);
}