Ring extends AtomContainer implements java.io.Serializable, IRing { public Ring() { super(); } Ring();  Ring(IAtomContainer atomContainer);  Ring(int ringSize, String elementSymbol);  Ring(int ringSize); @Override int getRingSize(); @Override IBond getNextBond(IBond bond, IAtom atom); @Override int getBondOrderSum(); @Override IRing clone(); @Override String toString();  }
@Test public void testRing() { IRing ring = new Ring(); Assert.assertNotNull(ring); Assert.assertEquals(0, ring.getAtomCount()); Assert.assertEquals(0, ring.getBondCount()); }