@Test
public void testMethane() {

    IChemObjectBuilder builder = SilentChemObjectBuilder.getInstance();
    IAtomContainer methane = builder.newInstance(IAtomContainer.class);
    methane.addAtom(builder.newInstance(IAtom.class, "C"));
    IDescriptorResult result = descriptor.calculate(methane).getValue();
    Assert.assertTrue(result instanceof DoubleResult);
    Assert.assertEquals(1.57, ((DoubleResult) result).doubleValue(), 0.01);
}