assertThat(network.nodes()).containsExactly(N1, N5, N4, N2, N3);
    assertThat(network.edges()).containsExactly(E15, E41, E23);
    assertThat(network.edgesConnecting(N1, N5)).containsExactly(E15);
    assertThat(network.edgesConnecting(N4, N1)).containsExactly(E41);
    assertThat(network.edgesConnecting(N2, N3)).containsExactly(E23);
    assertThat(network.edgesConnecting(N3, N2)).containsExactly(E23);
  }

  @Test

    assertThat(set.headSet(2)).containsExactly(1).inOrder();
    assertThat(set.headSet(3)).containsExactly(1, 2).inOrder();
    assertThat(set.headSet(4)).containsExactly(1, 2, 3).inOrder();
    assertThat(set.headSet(Integer.MAX_VALUE)).containsExactly(1, 2, 3).inOrder();
    assertThat(set.headSet(1, true)).containsExactly(1).inOrder();
    assertThat(set.headSet(2, true)).containsExactly(1, 2).inOrder();

    assertThat(set.headSet(2)).containsExactly(1).inOrder();
    assertThat(set.headSet(3)).containsExactly(1, 2).inOrder();
    assertThat(set.headSet(4)).containsExactly(1, 2, 3).inOrder();
    assertThat(set.headSet(Integer.MAX_VALUE)).containsExactly(1, 2, 3).inOrder();
    assertThat(set.headSet(1, true)).containsExactly(1).inOrder();
    assertThat(set.headSet(2, true)).containsExactly(1, 2).inOrder();

    assertThat(network.nodes()).containsExactly(N1, N5, N4, N2, N3);
    assertThat(network.edges()).containsExactly(E15, E41, E23);
    assertThat(network.edgesConnecting(N1, N5)).containsExactly(E15);
    assertThat(network.edgesConnecting(N4, N1)).containsExactly(E41);
    assertThat(network.edgesConnecting(N2, N3)).containsExactly(E23);
    // Direction of the added edge is correctly handled

    assertThat(Files.fileTraverser().breadthFirst(rootDir)).containsExactly(rootDir);
  }

  public void testFileTraverser_nonExistingFile() throws Exception {
    File file = new File(rootDir, "file-that-doesnt-exist");

    assertThat(Files.fileTraverser().breadthFirst(file)).containsExactly(file);
  }

  public void testFileTraverser_file() throws Exception {

            .putAll(table)
            .build();
    assertThat(copy.rowKeySet()).containsExactly('a', 'b').inOrder();
    assertThat(copy.columnKeySet()).containsExactly(1, 2).inOrder();
    assertThat(copy.values()).containsExactly("baz", "bar", "foo").inOrder();
    assertThat(copy.row('b').keySet()).containsExactly(1, 2).inOrder();
  }

  public void testBuilder_orderRowsAndColumnsBy_sparse() {

    assertThat(multimap.keySet()).containsExactly("foo", "bar", "cow").inOrder();
    assertThat(multimap.removeAll("foo")).containsExactly(6, 7).inOrder();
    assertThat(multimap.keySet()).containsExactly("bar", "cow").inOrder();
    assertTrue(multimap.remove("bar", 4));
    assertThat(multimap.keySet()).containsExactly("bar", "cow").inOrder();

    multimap.putAll("bar", Arrays.asList(1, 2, 3, 1));
    assertThat(multimap.removeAll("foo")).containsExactly(3, -1, 2, 4, 1).inOrder();
    assertFalse(multimap.containsKey("foo"));
    assertThat(multimap.replaceValues("bar", Arrays.asList(6, 5)))
        .containsExactly(1, 2, 3, 1)
        .inOrder();
    assertThat(multimap.get("bar")).containsExactly(6, 5).inOrder();
  }

  public void testSynchronizedSortedSetMultimap() {

        .containsExactly(1, 2, 1, 3, 5)
        .inOrder();
  }

  public void testCopyInto_Set() {
    assertThat(fluent(1, 3, 5).copyInto(Sets.newHashSet(1, 2))).containsExactly(1, 2, 3, 5);
  }

  public void testCopyInto_SetAllDuplicates() {
    assertThat(fluent(1, 3, 5).copyInto(Sets.newHashSet(1, 2, 3, 5))).containsExactly(1, 2, 3, 5);
  }

    ms.add("c");
    assertThat(ms.elementSet()).containsExactly("a", "b", "c").inOrder();
    ms.remove("b");
    assertThat(ms.elementSet()).containsExactly("a", "b", "c").inOrder();
    ms.add("b");
    assertThat(ms.elementSet()).containsExactly("a", "b", "c").inOrder();
    ms.remove("b", 2);
    ms.add("b");
    assertThat(ms.elementSet()).containsExactly("a", "c", "b").inOrder();
  }