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1   package org.apache.maven.doxia.util;
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 java.io.StringReader;
23  
24  import org.apache.maven.doxia.parser.ParseException;
25  
26  import junit.framework.TestCase;
27  
28  
29  /**
30   * Unit test for {@link org.apache.maven.doxia.util.ByLineReaderSource}.
31   *
32   * @author Juan F. Codagnone
33   * @since Nov 1, 2005
34   */
35  public class ByLineReaderSourceTest extends TestCase
36  {
37  
38      /**
39       * @throws ParseException on error
40       */
41      public final void testUse() throws ParseException
42      {
43          ByLineReaderSource r = new ByLineReaderSource(
44              new StringReader( "1 \n2\n3" ) );
45          assertEquals( -1, r.getLineNumber() );
46          assertEquals( "", r.getName() );
47  
48          assertEquals( "1 ", r.getNextLine() );
49          assertEquals( "2", r.getNextLine() );
50          r.ungetLine();
51          assertEquals( "2", r.getNextLine() );
52          r.ungetLine();
53          try
54          {
55              r.ungetLine();
56              fail();
57          }
58          catch ( IllegalStateException e )
59          {
60              // ok;
61          }
62          assertEquals( "2", r.getNextLine() );
63          assertEquals( "3", r.getNextLine() );
64          assertEquals( null, r.getNextLine() );
65      }
66  }