package api.usage;

 import api.Writer;

 import java.io.IOException;

 import java.io.StringWriter;

 import java.io.StringWriter;

 import org.junit.Before;

 import org.junit.Test;

 import static org.junit.Assert.*;

 /** Converting the Crypto example to the APIs that split client and provider

  * concerns and do not mix delegation and subclassing.

  *

  * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>

  */

 public class BufferedWriterCryptoTest {

     private StringWriter writer;

     public BufferedWriterCryptoTest() {

     }

     @Before

     public void setUp() {

         writer = new StringWriter();

     }

     @Test

     public void testBehaviourOfRealBufferInJDKWorksFine() throws IOException {

         Writer bufferedWriter = CryptoWriter.create(Writer.create(writer));

         bufferedWriter.write("VMS");

         bufferedWriter.flush();

         assertEquals("Converted", "WNT", writer.toString());

     }

 }