public void AllowFilter()
        {
            // Arrange
            var filter = new TextEncoderSettings(UnicodeRanges.BasicLatin);
            filter.AllowCodePoints(new OddTextEncoderSettings().GetAllowedCodePoints());

            // Assert
            for (int i = 0; i <= 0x007F; i++)
            {
                Assert.True(filter.IsCharacterAllowed((char)i));
            }
            for (int i = 0x0080; i <= Char.MaxValue; i++)
            {
                Assert.Equal((i % 2) == 1, filter.IsCharacterAllowed((char)i));
            }
        }