public void Bitfield_Exists_IsCorrect(bool exists)
        {
            var bitfield   = new Bitfield();
            var valueCount = RandomValue.Int(10, 3);
            var values     = new List <int>();

            for (var i = 0; i < valueCount; i++)
            {
                var value = RandomValue.Int(32, 0);
                bitfield.Set(value);
                values.Add(value);
            }

            Assert.Equal(exists, bitfield.Exists(exists ? values[RandomValue.Int(valueCount, 0)] : RandomValue.Int(64, 33)));
        }