@Test
public void testH2() {

    HydrogenPlacer hydrogenPlacer = new HydrogenPlacer();
    // h1 has no coordinates
    IAtom h1 = new Atom("H");
    IAtom h2 = new Atom("H", new Point2d(0, 0));
    IAtomContainer m = new AtomContainer();
    m.addAtom(h1);
    m.addAtom(h2);
    m.addBond(new Bond(h1, h2));
    hydrogenPlacer.placeHydrogens2D(m, 1.5);
    assertNotNull(h1.getPoint2d());
}