@Test
public void testOrder() {

    ILigand[] ligandCopy = CIPTool.order(ligands);
    Assert.assertEquals("H", ligandCopy[0].getLigandAtom().getSymbol());
    Assert.assertEquals("Cl", ligandCopy[1].getLigandAtom().getSymbol());
    Assert.assertEquals("Br", ligandCopy[2].getLigandAtom().getSymbol());
    Assert.assertEquals("I", ligandCopy[3].getLigandAtom().getSymbol());
}