"testSerializable", "testSerialization",
          "testEqualsAndSerializable", "testEqualsAndSerialization");

  /* The names of the expected method that tests equals. */
  private static final ImmutableList<String> EQUALS_TEST_METHOD_NAMES =
      ImmutableList.of(
          "testEquals",
          "testEqualsAndHashCode",
          "testEqualsAndSerializable",
          "testEqualsAndSerialization",

          "testSerializable", "testSerialization",
          "testEqualsAndSerializable", "testEqualsAndSerialization");

  /* The names of the expected method that tests equals. */
  private static final ImmutableList<String> EQUALS_TEST_METHOD_NAMES =
      ImmutableList.of(
          "testEquals",
          "testEqualsAndHashCode",
          "testEqualsAndSerializable",
          "testEqualsAndSerialization",

  @GwtIncompatible // reflection
  @AndroidIncompatible // TODO(cpovirk): ClassNotFoundException: com.google.common.base.Function
  public void testEqualsAndSerializable() throws Exception {
    new ClassSanityTester().forAllPublicStaticMethods(Predicates.class).testEqualsAndSerializable();
  }

  private static void assertEvalsToTrue(Predicate<? super @Nullable Integer> predicate) {
    assertTrue(predicate.apply(0));

  }

  public void testHashCode_nulls() throws Exception {
    sanityTester().testNulls();
  }

  public void testHashCode_equalsAndSerializable() throws Exception {
    sanityTester().testEqualsAndSerializable();
  }

  public void testRoundTripHashCodeUsingBaseEncoding() {
    HashCode hash1 = Hashing.sha1().hashString("foo", US_ASCII);

  }

  public void testHashCode_nulls() throws Exception {
    sanityTester().testNulls();
  }

  public void testHashCode_equalsAndSerializable() throws Exception {
    sanityTester().testEqualsAndSerializable();
  }

  public void testRoundTripHashCodeUsingBaseEncoding() {
    HashCode hash1 = Hashing.sha1().hashString("foo", US_ASCII);

     *
     * @return this tester
     */
    @CanIgnoreReturnValue
    @SuppressWarnings("CatchingUnchecked") // sneaky checked exception
    public FactoryMethodReturnValueTester testEqualsAndSerializable() throws Exception {
      for (Invokable<?, ?> factory : getFactoriesToTest()) {
        try {
          testEqualsUsing(factory);
        } catch (FactoryMethodReturnsNullException e) {