}

  private static <E extends @Nullable Object> Entry<E> control(E element, int count) {
    return HashMultiset.create(nCopies(count, element)).entrySet().iterator().next();
  }

  public void testToString() {
    assertThat(entry("foo", 1).toString()).isEqualTo("foo");
    assertThat(entry("bar", 2).toString()).isEqualTo("bar x 2");
  }

  public void testToStringNull() {

  public void testGetValue() {
    for (StandardSystemProperty property : StandardSystemProperty.values()) {
      assertThat(property.value()).isEqualTo(System.getProperty(property.key()));
    }
  }

  public void testToString() {
    for (StandardSystemProperty property : StandardSystemProperty.values()) {
      assertThat(property.toString()).isEqualTo(property.key() + "=" + property.value());
    }
  }

  public void testNoNullValues() {

    new EqualsTester()
        .addEqualityGroup(INSTANCE)
        .addEqualityGroup(ArrayTable.create(ImmutableSet.of('A'), ImmutableSet.of(1)))
        .testEquals();
  }

  public void testToString() {
    assertThat(INSTANCE.toString()).isEqualTo("{}");
  }

  public void testSize() {
    assertEquals(0, INSTANCE.size());
  }

  public void testGet() {
    assertThat(INSTANCE.get('a', 1)).isNull();

    assertEquals(3, multiset.size());
    assertEquals(2, multiset.count("foo"));
    assertThat(multiset.toString()).isEqualTo("[foo x 2, bar]");
  }

  public void testToString() {
    Multiset<String> ms = LinkedHashMultiset.create();
    ms.add("a", 3);
    ms.add("c", 1);
    ms.add("b", 2);

    assertThat(ms.toString()).isEqualTo("[a x 3, c, b x 2]");
  }

    assertThrows(IllegalStateException.class, hasher::hash);
  }

  @SuppressWarnings("deprecation") // We still need to test our deprecated APIs.
  public void testToString() {
    assertThat(md5().toString()).isEqualTo("Hashing.md5()");
    assertThat(sha1().toString()).isEqualTo("Hashing.sha1()");
    assertThat(sha256().toString()).isEqualTo("Hashing.sha256()");

    new EqualsTester()
        .addEqualityGroup(testTable)
        .addEqualityGroup(ArrayTable.create(ImmutableSet.of('A'), ImmutableSet.of(1)))
        .testEquals();
  }

  public void testToString() {
    assertThat(testTable.toString()).isEqualTo("{a={1=blah}}");
  }

  public void testContains() {
    assertTrue(testTable.contains('a', 1));
    assertFalse(testTable.contains('a', 2));

  }

  private static <E extends @Nullable Object> Entry<E> control(E element, int count) {
    return HashMultiset.create(nCopies(count, element)).entrySet().iterator().next();
  }

  public void testToString() {
    assertThat(entry("foo", 1).toString()).isEqualTo("foo");
    assertThat(entry("bar", 2).toString()).isEqualTo("bar x 2");
  }

  public void testToStringNull() {

  public void testGetValue() {
    for (StandardSystemProperty property : StandardSystemProperty.values()) {
      assertThat(property.value()).isEqualTo(System.getProperty(property.key()));
    }
  }

  public void testToString() {
    for (StandardSystemProperty property : StandardSystemProperty.values()) {
      assertThat(property.toString()).isEqualTo(property.key() + "=" + property.value());
    }
  }

  public void testNoNullValues() {

      assertEquals(1, task.get().intValue());
      assertEquals(1, counter.get());
    }
    executor.shutdown();
  }

  @J2ktIncompatible
  @GwtIncompatible // blocking wait
  public void testToString() throws Exception {
    CountDownLatch enterLatch = new CountDownLatch(1);
    CountDownLatch exitLatch = new CountDownLatch(1);
    TrustedListenableFutureTask<@Nullable Void> task =

    assertEquals(3, multiset.size());
    assertEquals(2, multiset.count("foo"));
    assertThat(multiset.toString()).isEqualTo("[foo x 2, bar]");
  }

  public void testToString() {
    Multiset<String> ms = LinkedHashMultiset.create();
    ms.add("a", 3);
    ms.add("c", 1);
    ms.add("b", 2);

    assertThat(ms.toString()).isEqualTo("[a x 3, c, b x 2]");
  }