.createTestSuite());

    return suite;
  }

  public void testCreation_noArgs() {
    Multiset<String> multiset = ImmutableMultiset.of();
    assertTrue(multiset.isEmpty());
  }

  public void testCreation_oneElement() {
    Multiset<String> multiset = ImmutableMultiset.of("a");
    assertEquals(HashMultiset.create(asList("a")), multiset);
  }

        assertTrue(endLatch.await(30, TimeUnit.SECONDS), "All threads should complete within timeout");
        executor.shutdown();

        // Then - Verify no exceptions occurred
        if (!exceptions.isEmpty()) {
            fail("Concurrent operations caused exceptions: " + exceptions.get(0));
        }

        assertEquals(threadCount * opsPerThread, successCount.get(), "All operations should succeed");
    }

  }

  @MapFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(ONE)
  public void testSingletonMapPollFirst() {
    assertEquals(a, navigableMap.pollFirstEntry());
    assertTrue(navigableMap.isEmpty());
  }

  @CollectionSize.Require(ONE)
  public void testSingletonMapNearby() {
    assertNull(navigableMap.lowerEntry(k0()));
    assertNull(navigableMap.lowerKey(k0()));

  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(ONE)
  public void testSingletonSetPollFirst() {
    assertEquals(a, navigableSet.pollFirst());
    assertTrue(navigableSet.isEmpty());
  }

  @CollectionSize.Require(ONE)
  public void testSingletonSetNearby() {
    assertNull(navigableSet.lower(e0()));
    assertEquals(a, navigableSet.floor(e0()));

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testEntrySet_clear() {
    getMultiset().entrySet().clear();
    assertTrue("multiset not empty after entrySet().clear()", getMultiset().isEmpty());
  }

  @CollectionSize.Require(ONE)
  @CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE)
  public void testEntrySet_iteratorRemovePropagates() {

  }

  @Override
  public @Nullable E higher(E e) {
    return delegate.higher(checkValid(e));
  }

  @Override
  public boolean isEmpty() {
    return delegate.isEmpty();
  }

  @Override
  public Iterator<E> iterator() {
    return delegate.iterator();
  }

  @Override
  public E last() {
    return delegate.last();
  }

            }
        }

        return null;
    }

    private PluginExecution findPluginExecution(String executionId, Collection<PluginExecution> executions) {
        if (executionId != null && !executionId.isEmpty()) {
            for (PluginExecution execution : executions) {
                if (executionId.equals(execution.getId())) {
                    return execution;
                }
            }
        }

    List<Integer> sublist = list.subList(0, 5);
    assertThat(sublist).containsExactly(1, 2, 3, 4, 5).inOrder();

    sublist.clear();
    assertTrue(sublist.isEmpty());
    multimap.put("foo", 6);

    assertThrows(ConcurrentModificationException.class, () -> sublist.isEmpty());
  }

  public void testCreateFromMultimap() {
    Multimap<String, Integer> multimap = create();
    multimap.put("foo", 1);

        assertNotNull(project.getRemoteArtifactRepositories());
        assertTrue(project.getRemoteArtifactRepositories().isEmpty());

        assertNotNull(project.getPluginArtifactRepositories());
        assertTrue(project.getPluginArtifactRepositories().isEmpty());

        assertNull(project.getParent());
        assertNull(project.getParentArtifact());

    assertTrue(FluentIterable.<String>from(Collections.<String>emptyList()).isEmpty());
    assertFalse(FluentIterable.<String>from(Lists.newArrayList("foo")).isEmpty());
  }

  public void testToList() {
    assertEquals(Lists.newArrayList(1, 2, 3, 4), fluent(1, 2, 3, 4).toList());
  }

  public void testToList_empty() {
    assertTrue(fluent().toList().isEmpty());
  }

  public void testToSortedList_withComparator() {