1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19 package org.eclipse.aether.util.graph.visitor;
20
21 import java.util.List;
22
23 import org.eclipse.aether.graph.DependencyFilter;
24 import org.eclipse.aether.graph.DependencyNode;
25 import org.eclipse.aether.internal.test.util.DependencyGraphParser;
26 import org.junit.jupiter.api.Test;
27
28 import static java.util.Objects.requireNonNull;
29 import static org.junit.jupiter.api.Assertions.*;
30
31 public class PathRecordingDependencyVisitorTest {
32
33 private DependencyNode parse(String resource) throws Exception {
34 return new DependencyGraphParser("visitor/path-recorder/").parseResource(resource);
35 }
36
37 private void assertPath(List<DependencyNode> actual, String... expected) {
38 assertEquals(expected.length, actual.size(), actual.toString());
39 for (int i = 0; i < expected.length; i++) {
40 DependencyNode node = actual.get(i);
41 assertEquals(expected[i], node.getDependency().getArtifact().getArtifactId(), actual.toString());
42 }
43 }
44
45 @Test
46 void testGetPaths_RecordsMatchesBeneathUnmatchedParents() throws Exception {
47 DependencyNode root = parse("simple.txt");
48
49 PathRecordingDependencyVisitor visitor = new PathRecordingDependencyVisitor(new ArtifactMatcher());
50 root.accept(visitor);
51
52 List<List<DependencyNode>> paths = visitor.getPaths();
53 assertEquals(2, paths.size(), paths.toString());
54 assertPath(paths.get(0), "a", "b", "x");
55 assertPath(paths.get(1), "a", "x");
56 }
57
58 @Test
59 void testGetPaths_DoesNotRecordMatchesBeneathMatchedParents() throws Exception {
60 DependencyNode root = parse("nested.txt");
61
62 PathRecordingDependencyVisitor visitor = new PathRecordingDependencyVisitor(new ArtifactMatcher());
63 root.accept(visitor);
64
65 List<List<DependencyNode>> paths = visitor.getPaths();
66 assertEquals(1, paths.size(), paths.toString());
67 assertPath(paths.get(0), "x");
68 }
69
70 @Test
71 void testGetPaths_RecordsMatchesBeneathMatchedParentsIfRequested() throws Exception {
72 DependencyNode root = parse("nested.txt");
73
74 PathRecordingDependencyVisitor visitor = new PathRecordingDependencyVisitor(new ArtifactMatcher(), false);
75 root.accept(visitor);
76
77 List<List<DependencyNode>> paths = visitor.getPaths();
78 assertEquals(3, paths.size(), paths.toString());
79 assertPath(paths.get(0), "x");
80 assertPath(paths.get(1), "x", "a", "y");
81 assertPath(paths.get(2), "x", "y");
82 }
83
84 @Test
85 void testFilterCalledWithProperParentStack() throws Exception {
86 DependencyNode root = parse("parents.txt");
87
88 final StringBuilder buffer = new StringBuilder(256);
89 DependencyFilter filter = new DependencyFilter() {
90 public boolean accept(DependencyNode node, List<DependencyNode> parents) {
91 requireNonNull(node, "node cannot be null");
92 requireNonNull(parents, "parents cannot be null");
93 for (DependencyNode parent : parents) {
94 buffer.append(parent.getDependency().getArtifact().getArtifactId());
95 }
96 buffer.append(",");
97 return false;
98 }
99 };
100
101 PathRecordingDependencyVisitor visitor = new PathRecordingDependencyVisitor(filter);
102 root.accept(visitor);
103
104 assertEquals(",a,ba,cba,a,ea,", buffer.toString());
105 }
106
107 @Test
108 void testGetPaths_HandlesCycles() throws Exception {
109 DependencyNode root = parse("cycle.txt");
110
111 PathRecordingDependencyVisitor visitor = new PathRecordingDependencyVisitor(new ArtifactMatcher(), false);
112 root.accept(visitor);
113
114 List<List<DependencyNode>> paths = visitor.getPaths();
115 assertEquals(4, paths.size(), paths.toString());
116 assertPath(paths.get(0), "a", "b", "x");
117 assertPath(paths.get(1), "a", "x");
118 assertPath(paths.get(2), "a", "x", "b", "x");
119 assertPath(paths.get(3), "a", "x", "x");
120 }
121
122 @Test
123 void testGetPaths_HandlesCycles_threePaths() throws Exception {
124 DependencyNode root = parse("cycle-3paths.txt");
125
126 PathRecordingDependencyVisitor visitor = new PathRecordingDependencyVisitor(new ArtifactMatcher());
127 root.accept(visitor);
128
129 List<List<DependencyNode>> paths = visitor.getPaths();
130 assertEquals(1, paths.size(), paths.toString());
131 assertPath(paths.get(0), "a", "b");
132 }
133
134 private static class ArtifactMatcher implements DependencyFilter {
135 public boolean accept(DependencyNode node, List<DependencyNode> parents) {
136 return node.getDependency() != null
137 && node.getDependency().getArtifact().getGroupId().equals("match");
138 }
139 }
140 }