@Test
public void testClone() throws Exception {

    MolecularFormulaRange mfRange = new MolecularFormulaRange();
    Object clone = mfRange.clone();
    Assert.assertTrue(clone instanceof MolecularFormulaRange);
    Assert.assertEquals(mfRange.getIsotopeCount(), ((MolecularFormulaRange) clone).getIsotopeCount());
}