.addEqualityGroup(Functions.forMap(map, 42))
        .testEquals();
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testForMapWithoutDefaultSerializable() {
    checkCanReserialize(Functions.forMap(ImmutableMap.of(1, 2)));
  }

  public void testForMapWithDefault() {
    Map<String, @Nullable Integer> map = new HashMap<>();
    map.put("One", 1);

        .addEqualityGroup(Functions.forMap(map, 42))
        .testEquals();
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testForMapWithoutDefaultSerializable() {
    checkCanReserialize(Functions.forMap(ImmutableMap.of(1, 2)));
  }

  public void testForMapWithDefault() {
    Map<String, @Nullable Integer> map = new HashMap<>();
    map.put("One", 1);