ByteArrayOutputStream stream = new ByteArrayOutputStream();
CsvWriter writer = new CsvWriter(stream, ',', Charset
.forName("ISO-8859-1"));
writer.write("1,2");
writer.endRecord();
buffer = stream.toByteArray();
String data = Charset.forName("ISO-8859-1").decode(
ByteBuffer.wrap(buffer)).toString();
Assert.assertEquals("", data);