String source = "12345";
byte[] sourceBytes = source.getBytes("UTF-8");
VariableIntCompressionModel model = new VariableIntCompressionModel();
model.build(new ArrayDocumentList(sourceBytes));
byte[] compressedBytes = model.compress(sourceBytes);
Assert.assertEquals(2, compressedBytes.length);
byte[] decompressedBytes = model.decompress(compressedBytes);
String decompressedString = new String(decompressedBytes);