@Test
public void testDestroy() throws Exception {
mediator.destroy();
ArgumentCaptor<CatalogListener> captor = ArgumentCaptor.forClass(CatalogListener.class);
verify(catalog, times(2)).removeListener(captor.capture());
for (CatalogListener captured : captor.getAllValues()) {
assertTrue(
captured instanceof CatalogLayerEventListener
|| captured instanceof CatalogStyleChangeListener);
}
}
