View Javadoc
1   package org.apache.maven.plugin.assembly.utils;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import junit.framework.TestCase;
23  
24  import java.io.ByteArrayInputStream;
25  import java.io.IOException;
26  
27  public class LinuxLineFeedInputStreamTest
28      extends TestCase
29  {
30  
31      public void testSimpleString()
32          throws Exception
33      {
34          assertEquals( "abc\n", roundtrip( "abc" ) );
35      }
36  
37      public void testInTheMiddleOfTheLine()
38          throws Exception
39      {
40          assertEquals( "a\nbc\n", roundtrip( "a\r\nbc" ) );
41      }
42  
43      public void testCrOnly()
44          throws Exception
45      {
46          assertEquals( "a\nb\n", roundtrip( "a\rb" ) );
47      }
48  
49      public void testCrAtEnd() throws Exception {
50          assertEquals( "a\n", roundtrip( "a\r" ) );
51      }
52  
53  
54      public void testMultipleBlankLines()
55          throws Exception
56      {
57          assertEquals( "a\n\nbc\n", roundtrip( "a\r\n\r\nbc" ) );
58      }
59  
60      public void testTwoLinesAtEnd()
61          throws Exception
62      {
63          assertEquals( "a\n\n", roundtrip( "a\r\n\r\n" ) );
64      }
65  
66      public void testRetainLineFeed()
67          throws Exception
68      {
69          assertEquals( "a\n\n", roundtrip( "a\r\n\r\n", false ) );
70          assertEquals( "a", roundtrip( "a", false ) );
71      }
72  
73      private String roundtrip( String msg )
74          throws IOException
75      {
76          return roundtrip( msg, true );
77      }
78  
79      private String roundtrip( String msg, boolean ensure )
80          throws IOException
81      {
82          ByteArrayInputStream baos = new ByteArrayInputStream( msg.getBytes() );
83          LinuxLineFeedInputStream lf = new LinuxLineFeedInputStream( baos, ensure );
84          byte[] buf = new byte[100];
85          final int read = lf.read( buf );
86          return new String( buf, 0, read );
87      }
88  
89  }