} catch (NoSuchElementException expected) {
    }
    iterator.remove();
    assertEquals(asList("1", "2", "3"), list);
    assertFalse(iterator.hasNext());
  }

  public void testPartition_badSize() {
    List<Integer> source = singletonList(1);
    assertThrows(IllegalArgumentException.class, () -> partition(source, 0));
  }

  public void testPartition_empty() {

    } catch (NoSuchElementException expected) {
    }
    iterator.remove();
    assertEquals(asList("1", "2", "3"), list);
    assertFalse(iterator.hasNext());
  }

  public void testPartition_badSize() {
    List<Integer> source = singletonList(1);
    assertThrows(IllegalArgumentException.class, () -> partition(source, 0));
  }

  public void testPartition_empty() {

    int n = 4;
    Iterable<Integer> repeated = Iterables.concat(nCopies(n, iterable));
    assertThat(repeated).containsExactly(1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3).inOrder();
  }

  public void testPartition_badSize() {
    Iterable<Integer> source = singleton(1);
    assertThrows(IllegalArgumentException.class, () -> Iterables.partition(source, 0));
  }

  public void testPartition_empty() {