* Check cloning of the urlGenerator field.
* @throws CloneNotSupportedException
*/
@Test
public void testCloning_URLGenerator() throws CloneNotSupportedException {
CustomPieURLGenerator generator = new CustomPieURLGenerator();
PiePlot p1 = new PiePlot();
p1.setURLGenerator(generator);
PiePlot p2 = (PiePlot) p1.clone();
assertNotSame(p1, p2);
assertSame(p1.getClass(), p2.getClass());