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1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one
3    *  or more contributor license agreements.  See the NOTICE file
4    *  distributed with this work for additional information
5    *  regarding copyright ownership.  The ASF licenses this file
6    *  to you under the Apache License, Version 2.0 (the
7    *  "License"); you may not use this file except in compliance
8    *  with the License.  You may obtain a copy of the License at
9    *
10   *    http://www.apache.org/licenses/LICENSE-2.0
11   *
12   *  Unless required by applicable law or agreed to in writing,
13   *  software distributed under the License is distributed on an
14   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *  KIND, either express or implied.  See the License for the
16   *  specific language governing permissions and limitations
17   *  under the License.
18   *
19   */
20  
21  package org.apache.mina.util;
22  
23  import java.io.IOException;
24  import java.io.InputStream;
25  import java.nio.ByteBuffer;
26  
27  import static org.junit.Assert.*;
28  import org.junit.Test;
29  
30  /**
31   * A {@link ByteBufferInputStream} test.
32   * 
33   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
34   */
35  public class ByteBufferInputStreamTest {
36      @Test
37      public void testEmpty() throws IOException {
38          ByteBuffer bb = ByteBuffer.allocate(0);
39          InputStream is = new ByteBufferInputStream(bb);
40          assertEquals(-1, is.read());
41          is.close();
42      }
43  
44      @Test
45      public void testReadArray() throws IOException {
46          byte[] src = "HELLO MINA".getBytes();
47          byte[] dst = new byte[src.length];
48          ByteBuffer bb = ByteBuffer.wrap(src);
49          InputStream is = new ByteBufferInputStream(bb);
50  
51          assertEquals(true, is.markSupported());
52          is.mark(src.length);
53          assertEquals(dst.length, is.read(dst));
54          assertArrayEquals(src, dst);
55          assertEquals(-1, is.read());
56          is.close();
57  
58          is.reset();
59          byte[] dstTooBig = new byte[src.length + 1];
60          assertEquals(src.length, is.read(dstTooBig));
61  
62          assertEquals(-1, is.read(dstTooBig));
63      }
64  
65      @Test
66      public void testSkip() throws IOException {
67          byte[] src = "HELLO MINA!".getBytes();
68          ByteBuffer bb = ByteBuffer.wrap(src);
69          InputStream is = new ByteBufferInputStream(bb);
70          is.skip(6);
71  
72          assertEquals(5, is.available());
73          assertEquals('M', is.read());
74          assertEquals('I', is.read());
75          assertEquals('N', is.read());
76          assertEquals('A', is.read());
77  
78          is.skip((long) Integer.MAX_VALUE + 1);
79          assertEquals(-1, is.read());
80          is.close();
81      }
82  
83  }