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1   package org.apache.maven.it;
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 org.apache.maven.it.util.ResourceExtractor;
23  
24  import java.io.File;
25  import java.util.Properties;
26  
27  /**
28   * This is a test set for <a href="https://issues.apache.org/jira/browse/MNG-4273">MNG-4273</a>.
29   *
30   * @author Benjamin Bentmann
31   */
32  public class MavenITmng4273RestrictedCoreRealmAccessForPluginTest
33      extends AbstractMavenIntegrationTestCase
34  {
35  
36      public MavenITmng4273RestrictedCoreRealmAccessForPluginTest()
37      {
38          super( "[2.0.6,)" );
39      }
40  
41      /**
42       * Verify that internal utility/implementation classes used by the Maven core do not leak into the plugin realm.
43       * Otherwise, we risk linkage errors when a plugin creates a custom class loader with parent-first delegation on
44       * top of the plugin realm because the custom class loader will prefer potentially incompatible classes from the
45       * core realm over classes from itself.
46       *
47       * @throws Exception in case of failure
48       */
49      public void testit()
50          throws Exception
51      {
52          File testDir = ResourceExtractor.simpleExtractResources( getClass(), "/mng-4273" );
53  
54          Verifier verifier = newVerifier( testDir.getAbsolutePath() );
55          verifier.setAutoclean( false );
56          verifier.executeGoal( "validate" );
57          verifier.verifyErrorFreeLog();
58          verifier.resetStreams();
59  
60          Properties props = verifier.loadProperties( "target/class.properties" );
61  
62          assertNull( props.getProperty( "org.codehaus.plexus.util.FileUtils$FilterWrapper" ) );
63  
64          try
65          {
66              // some IBM JRE's ship with Xerces (xml.jar) so a plugin can load this class from the bootstrap loader
67              ClassLoader.getSystemClassLoader().loadClass( "org.apache.xerces.util.ParserConfigurationSettings" );
68          }
69          catch ( ClassNotFoundException e )
70          {
71              // not provided by JRE, and must not be provided by Maven's core realm either
72              assertNull( props.getProperty( "org.apache.xerces.util.ParserConfigurationSettings" ) );
73          }
74      }
75  
76  }