import jcifs.CIFSException;
import jcifs.CloseableIterator;
import jcifs.ResourceFilter;
import jcifs.SmbConstants;
import jcifs.SmbResource;

class ShareEnumIterator implements CloseableIterator<SmbResource> {

    private static final Logger log = LoggerFactory.getLogger(ShareEnumIterator.class);

    private final Iterator<FileEntry> delegate;
    private final ResourceFilter filter;
    private final SmbResource parent;

            assertThrows(NullPointerException.class, () -> new ShareEnumIterator(null, entries.iterator(), null));
        }

        @Test
        @DisplayName("Empty iterator: hasNext() is false and next() returns null")
        void emptyIterator_behavesAsEmpty() throws Exception {
            SmbFile parent = newParent();
            ShareEnumIterator it = new ShareEnumIterator(parent, Collections.<FileEntry> emptyList().iterator(), null);