@Test
public void testGetPlacedHeavyAtoms_IAtomContainer_IAtom() {

    IAtomContainer ac = makeAlphaPinene();
    IAtomContainer acplaced = new AtomPlacer3D().getPlacedHeavyAtoms(ac, ac.getAtom(0));
    Assert.assertEquals(0, acplaced.getAtomCount());
    ac.getAtom(1).setFlag(CDKConstants.ISPLACED, true);
    acplaced = new AtomPlacer3D().getPlacedHeavyAtoms(ac, ac.getAtom(0));
    Assert.assertEquals(1, acplaced.getAtomCount());
}