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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.List;
26  
27  /**
28   * This is a test set for <a href="https://issues.apache.org/jira/browse/MNG-4768">MNG-4768</a>.
29   *
30   * @author Benjamin Bentmann
31   */
32  public class MavenITmng4768NearestMatchConflictResolutionTest
33      extends AbstractMavenIntegrationTestCase
34  {
35  
36      public MavenITmng4768NearestMatchConflictResolutionTest()
37      {
38          super( "[2.0.9,)" );
39      }
40  
41      // Ideally, all six permutations of the three direct dependencies should yield the same result...
42  
43      public void testitABD()
44          throws Exception
45      {
46          testit( "test-abd" );
47      }
48  
49      public void testitADB()
50          throws Exception
51      {
52          requiresMavenVersion( "[3.0-beta-3,)" );
53          testit( "test-adb" );
54      }
55  
56      public void testitBAD()
57          throws Exception
58      {
59          testit( "test-bad" );
60      }
61  
62      public void testitBDA()
63          throws Exception
64      {
65          testit( "test-bda" );
66      }
67  
68      public void testitDAB()
69          throws Exception
70      {
71          requiresMavenVersion( "[3.0-beta-3,)" );
72          testit( "test-dab" );
73      }
74  
75      public void testitDBA()
76          throws Exception
77      {
78          testit( "test-dba" );
79      }
80  
81      /**
82       * Verify that conflict resolution picks the nearest version that matches all hard constraints given by ranges.
83       * And for conflicting dependencies on distinct tree levels, "nearest" shouldn't be subject to the dependency
84       * order.
85       */
86      private void testit( String test )
87          throws Exception
88      {
89          File testDir = ResourceExtractor.simpleExtractResources( getClass(), "/mng-4768" );
90  
91          Verifier verifier = newVerifier( new File( testDir, test ).getAbsolutePath() );
92          verifier.setAutoclean( false );
93          verifier.deleteDirectory( "target" );
94          verifier.deleteArtifacts( "org.apache.maven.its.mng4768" );
95          verifier.addCliOption( "-s" );
96          verifier.addCliOption( "settings.xml" );
97          verifier.filterFile( "../settings-template.xml", "settings.xml", "UTF-8", verifier.newDefaultFilterProperties() );
98          verifier.executeGoal( "validate" );
99          verifier.verifyErrorFreeLog();
100         verifier.resetStreams();
101 
102         List<String> classpath = verifier.loadLines( "target/classpath.txt", "UTF-8" );
103 
104         assertTrue( test + " > " + classpath.toString(), classpath.contains( "a-2.0.jar" ) );
105         assertTrue( test + " > " + classpath.toString(), classpath.contains( "b-0.1.jar" ) );
106         assertTrue( test + " > " + classpath.toString(), classpath.contains( "c-0.1.jar" ) );
107         assertTrue( test + " > " + classpath.toString(), classpath.contains( "d-0.1.jar" ) );
108 
109         assertFalse( test + " > " + classpath.toString(), classpath.contains( "a-2.1.jar" ) );
110         assertFalse( test + " > " + classpath.toString(), classpath.contains( "a-1.0.jar" ) );
111     }
112 
113 }