@Test
public void testImplicitHydrogen_Same() throws Exception {

    IAtomContainer molecule = smiles.parseSmiles("CC(Br)([13C])[H]");
    ILigand ligand1 = new ImplicitHydrogenLigand(molecule, new VisitedAtoms(), molecule.getAtom(1));
    ILigand ligand2 = new Ligand(molecule, new VisitedAtoms(), molecule.getAtom(1), molecule.getAtom(4));
    ISequenceSubRule<ILigand> rule = new CIPLigandRule();
    Assert.assertEquals(0, rule.compare(ligand1, ligand2));
    Assert.assertEquals(0, rule.compare(ligand2, ligand1));
}