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1   package org.apache.maven.exception;
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.IOException;
23  import java.net.ConnectException;
24  
25  import org.apache.maven.plugin.MojoExecutionException;
26  
27  import junit.framework.TestCase;
28  
29  /**
30   * @author <a href="mailto:baerrach@apache.org">Barrie Treloar</a>
31   */
32  public class DefaultExceptionHandlerTest
33      extends TestCase
34  {
35      /**
36       * Running Maven under JDK7 may cause connection issues because IPv6 is used by default.
37       * <p>
38       * e.g running mvn site:run will cause Jetty to fail.
39       * </p>
40       * <p>
41       * The resolution is to add -Djava.net.preferIPv4Stack=true to the command line as documented in
42       * http://cwiki.apache.org/confluence/display/MAVEN/ConnectException
43       * </p>
44       */
45      public void testJdk7ipv6()
46      {
47          ConnectException connEx = new ConnectException( "Connection refused: connect" );
48          IOException ioEx = new IOException( "Unable to establish loopback connection" );
49          ioEx.initCause( connEx );
50          MojoExecutionException mojoEx =
51              new MojoExecutionException( "Error executing Jetty: Unable to establish loopback connection", ioEx );
52  
53          ExceptionHandler exceptionHandler = new DefaultExceptionHandler();
54          ExceptionSummary exceptionSummary = exceptionHandler.handleException( mojoEx );
55  
56          String expectedReference = "http://cwiki.apache.org/confluence/display/MAVEN/ConnectException";
57          assertEquals( expectedReference, exceptionSummary.getReference() );
58  
59      }
60  }