assertThat(sortedMultiset.entrySet())
        .containsExactly(
            Multisets.immutableEntry("a", 3),
            Multisets.immutableEntry("c", 2),
            Multisets.immutableEntry("b", 1))
        .inOrder();

    assertThat(sortedMultiset).containsExactly("a", "a", "a", "c", "c", "b").inOrder();

        e = list.getLastEntry();
        assertThat(e.getNext(), is(nullValue()));
        assertThat(e.getPrevious().getElement(), is("2"));
        list.getEntry(1).remove();
        assertThat(list.getFirst(), is("1"));
        assertThat(list.getLast(), is("3"));
        list.getLastEntry().remove();
        assertThat(list.getLast(), is("1"));
        list.getLastEntry().remove();
        assertThat(list.size(), is(0));
    }

    )

  @Test fun mappedToNothing() {
    assertThat(stringPrep("a\u00ADz")).isEqualTo("az")
    assertThat(stringPrep("a\u200Dz")).isEqualTo("az")
  }

  @Test fun caseFolding() {
    assertThat(stringPrep("localhost")).isEqualTo("localhost")
    assertThat(stringPrep("Localhost")).isEqualTo("localhost")
    assertThat(stringPrep("LOCALHOST")).isEqualTo("localhost")
    assertThat(stringPrep("abc123def")).isEqualTo("abc123def")

    SortedSet<String> elementSet = ms.elementSet();
    assertThat(elementSet).containsExactly("a", "b", "c", "d", "e", "f").inOrder();
    SortedSet<String> subset = elementSet.subSet("b", "f");
    assertThat(subset).containsExactly("b", "c", "d", "e").inOrder();

    assertTrue(subset.remove("c"));
    assertThat(elementSet).containsExactly("a", "b", "d", "e", "f").inOrder();
    assertThat(subset).containsExactly("b", "d", "e").inOrder();

    assertThat(UnsignedLongs.divide(0xfffffffffffffffeL, 2)).isEqualTo(0x7fffffffffffffffL);
    assertThat(UnsignedLongs.divide(0xfffffffffffffffeL, 5)).isEqualTo(3689348814741910322L);
  }

  public void testRemainder() {
    assertThat(UnsignedLongs.remainder(14, 5)).isEqualTo(4);
    assertThat(UnsignedLongs.remainder(0, 50)).isEqualTo(0);
    assertThat(UnsignedLongs.remainder(0xfffffffffffffffeL, 0xfffffffffffffffdL)).isEqualTo(1);

  public void testConcat() {
    assertThat(Ints.concat()).isEqualTo(EMPTY);
    assertThat(Ints.concat(EMPTY)).isEqualTo(EMPTY);
    assertThat(Ints.concat(EMPTY, EMPTY, EMPTY)).isEqualTo(EMPTY);
    assertThat(Ints.concat(ARRAY1)).isEqualTo(ARRAY1);
    assertThat(Ints.concat(ARRAY1)).isNotSameInstanceAs(ARRAY1);
    assertThat(Ints.concat(EMPTY, ARRAY1, EMPTY)).isEqualTo(ARRAY1);
    assertThat(Ints.concat(ARRAY1, ARRAY1, ARRAY1))

    assertThat(network.inEdges(N2)).isEmpty();
    assertThat(network.outEdges(N2)).isEmpty();
    assertThat(network.adjacentNodes(N4)).isEmpty();
    assertThat(network.predecessors(N4)).isEmpty();
    assertThat(network.successors(N4)).isEmpty();
    assertThat(network.incidentEdges(N4)).isEmpty();
    assertThat(network.inEdges(N4)).isEmpty();
    assertThat(network.outEdges(N4)).isEmpty();

        assertThat(it.hasNext(), is(true));
        assertThat(it.next(), is("Foo"));

        assertThat(it.hasNext(), is(true));
        assertThat(it.next(), is("Bar"));

        assertThat(it.hasNext(), is(true));
        assertThat(it.next(), is("Baz"));

        assertThat(it.hasNext(), is(not(true)));
    }

    assertThat(network.inEdges(N2)).isEmpty();
    assertThat(network.outEdges(N2)).isEmpty();
    assertThat(network.adjacentNodes(N4)).isEmpty();
    assertThat(network.predecessors(N4)).isEmpty();
    assertThat(network.successors(N4)).isEmpty();
    assertThat(network.incidentEdges(N4)).isEmpty();
    assertThat(network.inEdges(N4)).isEmpty();
    assertThat(network.outEdges(N4)).isEmpty();

    tree.put("tree", 0);
    tree.put("tree", 3);
    assertThat(tree.keySet()).containsExactly("tree", "google").inOrder();
    assertThat(tree.get("google")).containsExactly(6, 2).inOrder();

    TreeMultimap<String, Integer> copy = TreeMultimap.create(tree);
    assertEquals(tree, copy);
    assertThat(copy.keySet()).containsExactly("google", "tree").inOrder();
    assertThat(copy.get("google")).containsExactly(2, 6).inOrder();