dataSink.write("test");
IHttpResponse response = respHdl.getResponse();
Assert.assertEquals(200, response.getStatus());
BodyDataSource dataSource = response.getBody();
Assert.assertEquals("test", dataSource.readStringByLength(4));
dataSink.write("12345");
Assert.assertEquals("12345", dataSource.readStringByLength(5));
dataSink.write("789");
Assert.assertEquals("789", dataSource.readStringByLength(3));
dataSink.close();
con.close();
System.out.print(".");