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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.maven.toolchain.merge;
20  
21  import java.io.IOException;
22  import java.io.InputStream;
23  import java.util.Collections;
24  
25  import org.apache.maven.toolchain.io.DefaultToolchainsReader;
26  import org.apache.maven.toolchain.model.PersistedToolchains;
27  import org.apache.maven.toolchain.model.TrackableBase;
28  import org.codehaus.plexus.util.xml.Xpp3Dom;
29  import org.junit.jupiter.api.Test;
30  
31  import static org.junit.jupiter.api.Assertions.assertEquals;
32  
33  class MavenToolchainMergerTest {
34      private MavenToolchainMerger merger = new MavenToolchainMerger();
35  
36      private DefaultToolchainsReader reader = new DefaultToolchainsReader();
37  
38      @Test
39      void testMergeNulls() {
40          merger.merge(null, null, null);
41  
42          PersistedToolchains pt = new PersistedToolchains();
43          merger.merge(pt, null, null);
44          merger.merge(null, pt, null);
45      }
46  
47      @Test
48      void testMergeJdk() throws Exception {
49          try (InputStream isDominant = MavenToolchainMergerTest.class.getResourceAsStream("toolchains-jdks.xml");
50                  InputStream isRecessive = MavenToolchainMergerTest.class.getResourceAsStream("toolchains-jdks.xml")) {
51              PersistedToolchains dominant = read(isDominant);
52              PersistedToolchains recessive = read(isRecessive);
53              assertEquals(2, dominant.getToolchains().size());
54  
55              merger.merge(dominant, recessive, TrackableBase.USER_LEVEL);
56              assertEquals(2, dominant.getToolchains().size());
57          }
58      }
59  
60      @Test
61      void testMergeJdkExtra() throws Exception {
62          try (InputStream jdksIS = MavenToolchainMergerTest.class.getResourceAsStream("toolchains-jdks.xml");
63                  InputStream jdksExtraIS =
64                          MavenToolchainMergerTest.class.getResourceAsStream("toolchains-jdks-extra.xml")) {
65              PersistedToolchains jdks = read(jdksIS);
66              PersistedToolchains jdksExtra = read(jdksExtraIS);
67              assertEquals(2, jdks.getToolchains().size());
68  
69              merger.merge(jdks, jdksExtra, TrackableBase.USER_LEVEL);
70              assertEquals(4, jdks.getToolchains().size());
71              assertEquals(2, jdksExtra.getToolchains().size());
72          }
73          try (InputStream jdksIS = MavenToolchainMergerTest.class.getResourceAsStream("toolchains-jdks.xml");
74                  InputStream jdksExtraIS =
75                          MavenToolchainMergerTest.class.getResourceAsStream("toolchains-jdks-extra.xml")) {
76              PersistedToolchains jdks = read(jdksIS);
77              PersistedToolchains jdksExtra = read(jdksExtraIS);
78              assertEquals(2, jdks.getToolchains().size());
79  
80              // switch dominant with recessive
81              merger.merge(jdksExtra, jdks, TrackableBase.USER_LEVEL);
82              assertEquals(4, jdksExtra.getToolchains().size());
83              assertEquals(2, jdks.getToolchains().size());
84          }
85      }
86  
87      @Test
88      void testMergeJdkExtend() throws Exception {
89          try (InputStream jdksIS = MavenToolchainMergerTest.class.getResourceAsStream("toolchains-jdks.xml");
90                  InputStream jdksExtendIS =
91                          MavenToolchainMergerTest.class.getResourceAsStream("toolchains-jdks-extend.xml")) {
92              PersistedToolchains jdks = read(jdksIS);
93              PersistedToolchains jdksExtend = read(jdksExtendIS);
94              assertEquals(2, jdks.getToolchains().size());
95  
96              merger.merge(jdks, jdksExtend, TrackableBase.USER_LEVEL);
97              assertEquals(2, jdks.getToolchains().size());
98              Xpp3Dom config0 = (Xpp3Dom) jdks.getToolchains().get(0).getConfiguration();
99              assertEquals("lib/tools.jar", config0.getChild("toolsJar").getValue());
100             assertEquals(2, config0.getChildCount());
101             Xpp3Dom config1 = (Xpp3Dom) jdks.getToolchains().get(1).getConfiguration();
102             assertEquals(2, config1.getChildCount());
103             assertEquals("lib/classes.jar", config1.getChild("toolsJar").getValue());
104             assertEquals(2, jdksExtend.getToolchains().size());
105         }
106         try (InputStream jdksIS = MavenToolchainMergerTest.class.getResourceAsStream("toolchains-jdks.xml");
107                 InputStream jdksExtendIS =
108                         MavenToolchainMergerTest.class.getResourceAsStream("toolchains-jdks-extend.xml")) {
109             PersistedToolchains jdks = read(jdksIS);
110             PersistedToolchains jdksExtend = read(jdksExtendIS);
111             assertEquals(2, jdks.getToolchains().size());
112 
113             // switch dominant with recessive
114             merger.merge(jdksExtend, jdks, TrackableBase.USER_LEVEL);
115             assertEquals(2, jdksExtend.getToolchains().size());
116             Xpp3Dom config0 = (Xpp3Dom) jdksExtend.getToolchains().get(0).getConfiguration();
117             assertEquals("lib/tools.jar", config0.getChild("toolsJar").getValue());
118             assertEquals(2, config0.getChildCount());
119             Xpp3Dom config1 = (Xpp3Dom) jdksExtend.getToolchains().get(1).getConfiguration();
120             assertEquals(2, config1.getChildCount());
121             assertEquals("lib/classes.jar", config1.getChild("toolsJar").getValue());
122             assertEquals(2, jdks.getToolchains().size());
123         }
124     }
125 
126     private PersistedToolchains read(InputStream is) throws IOException {
127         return reader.read(is, Collections.emptyMap());
128     }
129 }