1   /***
2    * Redistribution  and use  in source  and binary  forms, with  or without
3    * modification, are permitted provided  that the following conditions are
4    * met :
5    *
6    * . Redistributions  of  source  code  must  retain  the  above copyright
7    *   notice, this list of conditions and the following disclaimer.
8    *
9    * . Redistributions in  binary form  must reproduce  the above  copyright
10   *   notice, this list of conditions  and the following disclaimer in  the
11   *   documentation and/or other materials provided with the distribution.
12   *
13   * . The name of the author may not be used to endorse or promote products
14   *   derived from this software without specific prior written permission.
15   *
16   * THIS SOFTWARE IS  PROVIDED BY THE  AUTHOR ``AS IS''  AND ANY EXPRESS  OR
17   * IMPLIED  WARRANTIES,  INCLUDING,  BUT   NOT  LIMITED  TO,  THE   IMPLIED
18   * WARRANTIES OF MERCHANTABILITY AND  FITNESS FOR A PARTICULAR  PURPOSE ARE
19   * DISCLAIMED.  IN NO  EVENT SHALL  THE AUTHOR  BE LIABLE  FOR ANY  DIRECT,
20   * INDIRECT,  INCIDENTAL,  SPECIAL,  EXEMPLARY,  OR  CONSEQUENTIAL  DAMAGES
21   * (INCLUDING,  BUT  NOT LIMITED  TO,  PROCUREMENT OF  SUBSTITUTE  GOODS OR
22   * SERVICES;  LOSS  OF USE,  DATA,  OR PROFITS;  OR  BUSINESS INTERRUPTION)
23   * HOWEVER CAUSED  AND ON  ANY THEORY  OF LIABILITY,  WHETHER IN  CONTRACT,
24   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
25   * ANY  WAY  OUT OF  THE  USE OF  THIS  SOFTWARE, EVEN  IF  ADVISED OF  THE
26   * POSSIBILITY OF SUCH DAMAGE.
27   *
28   * $Id$
29   */
30  
31  package palmed.edit.text;
32  
33  import java.io.ByteArrayInputStream;
34  import java.io.ByteArrayOutputStream;
35  import java.io.IOException;
36  import junit.framework.TestCase;
37  import org.easymock.MockControl;
38  
39  /***
40   * LineDelimiterInspector test case.
41   *
42   * @author Mathieu Champlon
43   * @version $Revision$ $Date$
44   */
45  public class LineDelimiterInspectorTest extends TestCase
46  {
47      /***
48       * Tested object.
49       */
50      private LineDelimiterInspector inspector;
51      /***
52       * Stub objects.
53       */
54      private ByteArrayOutputStream outputStreamStub;
55  
56      protected void setUp()
57      {
58          outputStreamStub = new ByteArrayOutputStream();
59      }
60  
61      private void assertArrayEquals( byte[] array1, byte[] array2 )
62      {
63          final MockControl controlArrayComparator = MockControl.createControl( IArrayComparator.class );
64          final IArrayComparator mockArrayComparator = (IArrayComparator)controlArrayComparator.getMock();
65          mockArrayComparator.compare( array1 );
66          controlArrayComparator.setMatcher( MockControl.ARRAY_MATCHER );
67          controlArrayComparator.replay();
68          mockArrayComparator.compare( array2 );
69          controlArrayComparator.verify();
70      }
71  
72      private ByteArrayInputStream createInputStreamStub( final String string )
73      {
74          return new ByteArrayInputStream( string.getBytes() );
75      }
76  
77      public void testDefaultDelimiterIsCRLF() throws IOException
78      {
79          inspector = new LineDelimiterInspector();
80          inspector.write( outputStreamStub );
81          assertArrayEquals( "\r\n".getBytes(), outputStreamStub.toByteArray() );
82      }
83  
84      public void testWrappedStreamContentIsForwarded() throws IOException
85      {
86          final String string = "this is a test";
87          inspector = new LineDelimiterInspector( createInputStreamStub( string ) );
88          final byte[] output = new byte[string.length()];
89          inspector.read( output );
90          assertArrayEquals( string.getBytes(), output );
91      }
92  
93      public void testWrappedStreamPartialContentIsForwarded() throws IOException
94      {
95          final String string = "this is a test";
96          inspector = new LineDelimiterInspector( createInputStreamStub( string ) );
97          byte[] output = new byte[5];
98          inspector.read( output, 0, 5 );
99          assertArrayEquals( string.substring( 0, 5 ).getBytes(), output );
100     }
101 
102     public void testDetectsCR() throws IOException
103     {
104         final String string = "this is\r a test";
105         inspector = new LineDelimiterInspector( createInputStreamStub( string ) );
106         final byte[] output = new byte[string.length()];
107         inspector.read( output );
108         assertArrayEquals( string.getBytes(), output );
109         inspector.write( outputStreamStub );
110         assertArrayEquals( "\r".getBytes(), outputStreamStub.toByteArray() );
111     }
112 
113     public void testDetectsLF() throws IOException
114     {
115         final String string = "this is\n a test";
116         inspector = new LineDelimiterInspector( createInputStreamStub( string ) );
117         final byte[] output = new byte[string.length()];
118         inspector.read( output );
119         assertArrayEquals( string.getBytes(), output );
120         inspector.write( outputStreamStub );
121         assertArrayEquals( "\n".getBytes(), outputStreamStub.toByteArray() );
122     }
123 
124     public void testDetectsCRLF() throws IOException
125     {
126         final String string = "this is\r\n a test";
127         inspector = new LineDelimiterInspector( createInputStreamStub( string ) );
128         final byte[] output = new byte[string.length()];
129         inspector.read( output, 0, string.length() );
130         assertArrayEquals( string.getBytes(), output );
131         inspector.write( outputStreamStub );
132         assertArrayEquals( "\r\n".getBytes(), outputStreamStub.toByteArray() );
133     }
134 
135     public void testPartialStreamDetectsCRLF() throws IOException
136     {
137         final String string = "\r\n\r\n";
138         inspector = new LineDelimiterInspector( createInputStreamStub( string ) );
139         final byte[] output = new byte[3];
140         for( int i = 0; i < string.length() / output.length + 1; ++i )
141             inspector.read( output, 0, output.length );
142         inspector.write( outputStreamStub );
143         assertArrayEquals( "\r\n".getBytes(), outputStreamStub.toByteArray() );
144     }
145 }