1 package org.eclipse.aether.util.graph.transformer;
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22 import org.eclipse.aether.RepositoryException;
23 import org.eclipse.aether.artifact.DefaultArtifact;
24 import org.eclipse.aether.graph.DefaultDependencyNode;
25 import org.eclipse.aether.graph.Dependency;
26 import org.eclipse.aether.graph.DependencyNode;
27 import org.eclipse.aether.internal.test.util.TestUtils;
28 import org.eclipse.aether.internal.test.util.TestVersion;
29 import org.eclipse.aether.internal.test.util.TestVersionConstraint;
30 import org.junit.Test;
31
32 import java.util.ArrayList;
33 import java.util.Arrays;
34 import java.util.List;
35
36 import static org.junit.Assert.assertEquals;
37 import static org.junit.Assert.assertSame;
38 import static org.junit.Assert.assertTrue;
39
40 public class ConflictResolverTest
41 {
42 @Test
43 public void noTransformationRequired() throws RepositoryException
44 {
45 ConflictResolver resolver = makeDefaultResolver();
46
47
48 DependencyNode fooNode = makeDependencyNode( "group-id", "foo", "1.0" );
49 DependencyNode barNode = makeDependencyNode( "group-id", "bar", "1.0" );
50 fooNode.setChildren( mutableList( barNode ) );
51
52 DependencyNode transformedNode = resolver.transformGraph(
53 fooNode, TestUtils.newTransformationContext( TestUtils.newSession() )
54 );
55
56 assertSame( fooNode, transformedNode );
57 assertEquals( 1, transformedNode.getChildren().size() );
58 assertSame( barNode, transformedNode.getChildren().get( 0 ) );
59 }
60
61 @Test
62 public void versionClash() throws RepositoryException
63 {
64 ConflictResolver resolver = makeDefaultResolver();
65
66
67
68 DependencyNode fooNode = makeDependencyNode( "some-group", "foo", "1.0" );
69 DependencyNode barNode = makeDependencyNode( "some-group", "bar", "1.0" );
70 DependencyNode baz1Node = makeDependencyNode( "some-group", "baz", "1.0" );
71 DependencyNode baz2Node = makeDependencyNode( "some-group", "baz", "2.0" );
72 fooNode.setChildren( mutableList( barNode, baz1Node ) );
73 barNode.setChildren( mutableList( baz2Node ) );
74
75 DependencyNode transformedNode = resolver.transformGraph(
76 fooNode, TestUtils.newTransformationContext( TestUtils.newSession() )
77 );
78
79 assertSame( fooNode, transformedNode );
80 assertEquals( 2, fooNode.getChildren().size() );
81 assertSame( barNode, fooNode.getChildren().get( 0 ) );
82 assertTrue( barNode.getChildren().isEmpty() );
83 assertSame( baz1Node, fooNode.getChildren().get( 1 ) );
84 }
85
86 @Test
87 public void derivedScopeChange() throws RepositoryException
88 {
89 ConflictResolver resolver = makeDefaultResolver();
90
91
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93 DependencyNode fooNode = makeDependencyNode( "some-group", "foo", "1.0" );
94 DependencyNode barNode = makeDependencyNode( "some-group", "bar", "1.0", "test" );
95 DependencyNode bazNode = makeDependencyNode( "some-group", "baz", "1.0" );
96 DependencyNode jazNode = makeDependencyNode( "some-group", "jaz", "1.0" );
97 fooNode.setChildren( mutableList( barNode, bazNode ) );
98
99 List<DependencyNode> jazList = mutableList( jazNode );
100 barNode.setChildren( jazList );
101 bazNode.setChildren( jazList );
102
103 DependencyNode transformedNode = resolver.transformGraph(
104 fooNode, TestUtils.newTransformationContext( TestUtils.newSession() )
105 );
106
107 assertSame( fooNode, transformedNode );
108 assertEquals( 2, fooNode.getChildren().size() );
109 assertSame( barNode, fooNode.getChildren().get( 0 ) );
110 assertEquals( 1, barNode.getChildren().size() );
111 assertSame( jazNode, barNode.getChildren().get( 0 ) );
112 assertSame( bazNode, fooNode.getChildren().get( 1 ) );
113 assertEquals( 1, barNode.getChildren().size() );
114 assertSame( jazNode, barNode.getChildren().get( 0 ) );
115 }
116
117 @Test
118 public void derivedOptionalStatusChange() throws RepositoryException
119 {
120 ConflictResolver resolver = makeDefaultResolver();
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124 DependencyNode fooNode = makeDependencyNode( "some-group", "foo", "1.0" );
125 DependencyNode barNode = makeDependencyNode( "some-group", "bar", "1.0" );
126 barNode.setOptional(true);
127 DependencyNode bazNode = makeDependencyNode( "some-group", "baz", "1.0" );
128 DependencyNode jazNode = makeDependencyNode( "some-group", "jaz", "1.0" );
129 fooNode.setChildren( mutableList( barNode, bazNode ) );
130
131 List<DependencyNode> jazList = mutableList( jazNode );
132 barNode.setChildren( jazList );
133 bazNode.setChildren( jazList );
134
135 DependencyNode transformedNode = resolver.transformGraph(
136 fooNode, TestUtils.newTransformationContext( TestUtils.newSession() )
137 );
138
139 assertSame( fooNode, transformedNode );
140 assertEquals( 2, fooNode.getChildren().size() );
141 assertSame( barNode, fooNode.getChildren().get( 0 ) );
142 assertEquals( 1, barNode.getChildren().size() );
143 assertSame( jazNode, barNode.getChildren().get( 0 ) );
144 assertSame( bazNode, fooNode.getChildren().get( 1 ) );
145 assertEquals( 1, barNode.getChildren().size() );
146 assertSame( jazNode, barNode.getChildren().get( 0 ) );
147 }
148
149 private static ConflictResolver makeDefaultResolver()
150 {
151 return new ConflictResolver(
152 new NearestVersionSelector(), new JavaScopeSelector(), new SimpleOptionalitySelector(), new JavaScopeDeriver()
153 );
154 }
155
156 private static DependencyNode makeDependencyNode( String groupId, String artifactId, String version )
157 {
158 return makeDependencyNode( groupId, artifactId, version, "compile" );
159 }
160
161 private static DependencyNode makeDependencyNode( String groupId, String artifactId, String version, String scope )
162 {
163 DefaultDependencyNode node = new DefaultDependencyNode(
164 new Dependency( new DefaultArtifact( groupId + ':' + artifactId + ':' + version ), scope )
165 );
166 node.setVersion( new TestVersion( version ) );
167 node.setVersionConstraint( new TestVersionConstraint( node.getVersion() ) );
168 return node;
169 }
170
171 private static List<DependencyNode> mutableList(DependencyNode... nodes)
172 {
173 return new ArrayList<>( Arrays.asList( nodes ) );
174 }
175 }