assertThat(SerializableTester.reserialize(comparator)).isSameInstanceAs(comparator);
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testStringConverterSerialization() {
    SerializableTester.reserializeAndAssert(Doubles.stringConverter());
  }

  public void testToArray() {
    // need explicit type parameter to avoid javac warning!?

    testSortDescending(new int[] {-1, -2, 1, 2}, 1, 3, new int[] {-1, 1, -2, 2});
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testStringConverterSerialization() {
    SerializableTester.reserializeAndAssert(Ints.stringConverter());
  }

  public void testToArray() {
    // need explicit type parameter to avoid javac warning!?

    testSortDescending(new short[] {-1, -2, 1, 2}, 1, 3, new short[] {-1, 1, -2, 2});
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testStringConverterSerialization() {
    SerializableTester.reserializeAndAssert(Shorts.stringConverter());
  }

  public void testToArray() {
    // need explicit type parameter to avoid javac warning!?