}
          }
        };

    assertTrue(iter.hasNext());
    assertEquals(0, (int) iter.next());

    // verify idempotence of hasNext()
    assertTrue(iter.hasNext());
    assertTrue(iter.hasNext());
    assertTrue(iter.hasNext());
    assertEquals(1, (int) iter.next());

    assertFalse(iter.hasNext());

    // Make sure computeNext() doesn't get invoked again

    assertThrows(NoSuchElementException.class, () -> iterator.next());
    assertThrows(IllegalStateException.class, () -> iterable.iterator());
  }

  public void testOf_one() {
    Iterable<String> iterable = MinimalIterable.of("a");
    Iterator<String> iterator = iterable.iterator();
    assertTrue(iterator.hasNext());
    assertEquals("a", iterator.next());
    assertFalse(iterator.hasNext());

                    }

                    @Override
                    public Entry<String, String> next() {
                      return transform(iterator.next());
                    }

                    private Entry<String, String> transform(Entry<String, String> next) {
                      return new Entry<String, String>() {

                        @Override

        }

        @Test
        @DisplayName("Should return next referral data")
        void testNext() {
            // Test with mock
            when(mockReferralData.next()).thenReturn(mockReferralData);
            DfsReferralDataInternal next = mockReferralData.next();
            assertSame(mockReferralData, next);
            verify(mockReferralData, times(1)).next();

            // Test with concrete implementation

    assertTrue(iterator.hasNext());
    assertEquals("a", iterator.next());
    assertThrows(UnsupportedOperationException.class, () -> iterator.remove());
  }

  @SuppressWarnings("DoNotCall")
  public void testAdd() {
    ListIterator<String> iterator = create();

    assertTrue(iterator.hasNext());
    assertEquals("a", iterator.next());
    assertEquals("b", iterator.next());
    assertEquals("b", iterator.previous());

        this.existPrePage = existPrePage;
    }

    /**
     * Checks if there is a next page.
     * @return true if next page exists, false otherwise
     */
    public boolean isExistNextPage() {
        return existNextPage;
    }

    /**
     * Sets whether a next page exists.
     * @param existNextPage true if next page exists
     */
    public void setExistNextPage(final boolean existNextPage) {

        assertThat(i.next(), is("bbb"));
        assertThat(i.next(), is("ccc"));
        assertThat(i.next(), is("aaa"));
        lru.put("ddd", "444");
        assertThat(lru.size(), is(3));
        assertThat(lru.get("bbb"), is(nullValue()));
        i = lru.keySet().iterator();
        assertThat(i.next(), is("ccc"));
        assertThat(i.next(), is("aaa"));
        assertThat(i.next(), is("ddd"));

        final LineIterator it = new LineIterator(reader);
        assertThat(it.hasNext(), is(true));
        assertThat(it.next(), is("aaa"));
        assertThat(it.hasNext(), is(true));
        assertThat(it.next(), is("bbb"));
        assertThat(it.hasNext(), is(true));
        assertThat(it.next(), is("ccc"));
        assertThat(it.hasNext(), is(not(true)));
    }

    /**
     * @throws Exception
     */
    @Test

        CommonServerMessageBlockRequest next =
                mock(CommonServerMessageBlockRequest.class, withSettings().extraInterfaces(RequestWithFileId.class));

        resp.prepare(next);

        verify((RequestWithFileId) next, times(1)).setFileId(eq(fileId));
    }

    @Test
    void prepare_doesNothing_whenNotReceived() {

     */
    @Override
    public boolean hasNext() {
        return this.next != null;
    }

    /**
     * {@inheritDoc}
     *
     * @see java.util.Iterator#next()
     */
    @Override
    public SmbResource next() {
        final SmbResource n = this.next;
        this.next = advance();
        return n;
    }

    /**
     * {@inheritDoc}
     *