public void HighEntropyRepeated()
        {
            var random  = new Random(0);
            var encoder = new LZ4FastEncoder(256);
            var source  = new byte[256];

            random.NextBytes(source);
            var target = new byte[1024];

            Assert.Equal(256, encoder.Topup(source, 0, 256));
            Assert.Equal(-256, encoder.Encode(target, 0, 1024, true));

            Assert.Equal(256, encoder.Topup(source, 0, 256));
            Assert.True(encoder.Encode(target, 0, 1024, true) < 32);
        }