}

  @CollectionSize.Require(ZERO)
  public void testHashCode_size0() {
    assertEquals("multiset has incorrect hash code", 0, getMultiset().hashCode());
  }

  @CollectionSize.Require(ONE)
  public void testHashCode_size1() {
    assertEquals("multiset has incorrect hash code", 1 ^ e0().hashCode(), getMultiset().hashCode());
  }

  }

  /**
   * Returns the {@link Method} instance for {@link #testHashCode()} so that list tests on
   * unhashable objects can suppress it with {@code FeatureSpecificTestSuiteBuilder.suppressing()}.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getHashCodeMethod() {
    return Helpers.getMethod(ListHashCodeTester.class, "testHashCode");
  }

   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method[] getHashCodeMethods() {
    return new Method[] {
      Helpers.getMethod(SetHashCodeTester.class, "testHashCode"),
      Helpers.getMethod(SetHashCodeTester.class, "testHashCode_containingNull")
    };
  }

  }

  /**
   * Returns the {@link Method} instance for {@link #testHashCode()} so that list tests on
   * unhashable objects can suppress it with {@code FeatureSpecificTestSuiteBuilder.suppressing()}.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getHashCodeMethod() {
    return Helpers.getMethod(ListHashCodeTester.class, "testHashCode");
  }

    assertFalse(entry(NE, 1).equals(control("bar", 1)));
    assertFalse(entry(NE, 1).equals(new Object()));
    assertFalse(entry(NE, 1).equals(null));
  }

  public void testHashCode() {
    assertEquals(control("foo", 1).hashCode(), entry("foo", 1).hashCode());
    assertEquals(control("bar", 2).hashCode(), entry("bar", 2).hashCode());
  }

  public void testHashCodeNull() {

   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method[] getHashCodeMethods() {
    return new Method[] {
      Helpers.getMethod(SetHashCodeTester.class, "testHashCode"),
      Helpers.getMethod(SetHashCodeTester.class, "testHashCode_containingNull")
    };
  }

  @MapFeature.Require(ALLOWS_NULL_KEYS)
  public void testHashCode_containingNullKey() {
    Entry<K, V> entryWithNull = entry(null, v3());
    runEntryWithNullTest(entryWithNull);
  }

  @CollectionSize.Require(absent = CollectionSize.ZERO)
  @MapFeature.Require(ALLOWS_NULL_VALUES)
  public void testHashCode_containingNullValue() {
    Entry<K, V> entryWithNull = entry(k3(), null);

  @MapFeature.Require(ALLOWS_NULL_KEYS)
  public void testHashCode_containingNullKey() {
    Entry<K, V> entryWithNull = entry(null, v3());
    runEntryWithNullTest(entryWithNull);
  }

  @CollectionSize.Require(absent = CollectionSize.ZERO)
  @MapFeature.Require(ALLOWS_NULL_VALUES)
  public void testHashCode_containingNullValue() {
    Entry<K, V> entryWithNull = entry(k3(), null);

  }

  @CollectionSize.Require(ZERO)
  public void testHashCode_size0() {
    assertEquals("multiset has incorrect hash code", 0, getMultiset().hashCode());
  }

  @CollectionSize.Require(ONE)
  public void testHashCode_size1() {
    assertEquals("multiset has incorrect hash code", 1 ^ e0().hashCode(), getMultiset().hashCode());
  }

    assertFalse(Objects.equal(s1, null));
    assertFalse(Objects.equal(null, s1));
    assertFalse(Objects.equal("foo", "bar"));
    assertFalse(Objects.equal("1", 1));
  }

  public void testHashCode() throws Exception {
    int h1 = Objects.hashCode(1, "two", 3.0);
    int h2 = Objects.hashCode(Integer.valueOf(1), new String("two"), Double.valueOf(3.0));
    // repeatable
    assertEquals(h1, h2);