package org.apache.mina.core.buffer;
   
   import static org.junit.Assert.assertEquals;
   
   import org.junit.Test;
   
   public class IoBufferHexDumperTest {
   
       @Test
      public void checkHexDumpLength() {
          IoBuffer buf = IoBuffer.allocate(5000);
  
          for (int i = 0; i < 20; i++) {
              buf.putShort((short) 0xF0A0);
          }
  
          buf.flip();
  
          /* special case */
          assertEquals(0, buf.getHexDump(0).length());
  
          /* no truncate needed */
          assertEquals(buf.limit() * 3 - 1, buf.getHexDump().length());
          assertEquals((Math.min(300, buf.limit()) * 3) - 1, buf.getHexDump(300).length());
  
          /* must truncate */
          assertEquals((7 * 3) - 1, buf.getHexDump(7).length());
          assertEquals((10 * 3) - 1, buf.getHexDump(10).length());
          assertEquals((30 * 3) - 1, buf.getHexDump(30).length());
  
      }
  
      @Test
      public void checkPrettyHexDumpLength() {
          IoBuffer buf = IoBuffer.allocate(5000);
  
          for (int i = 0; i < 20; i++) {
              buf.putShort((short) 0xF0A0);
          }
  
          buf.flip();
  
          String[] dump = buf.getHexDump(50, true).split("\\n");
          
          assertEquals(4, dump.length);
      }
  }