| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.eclipse.aether.util.graph.visitor; |
| |
| import java.util.List; |
| |
| import org.eclipse.aether.graph.DependencyFilter; |
| import org.eclipse.aether.graph.DependencyNode; |
| import org.eclipse.aether.internal.test.util.DependencyGraphParser; |
| import org.junit.jupiter.api.Test; |
| |
| import static java.util.Objects.requireNonNull; |
| import static org.junit.jupiter.api.Assertions.*; |
| |
| public class PathRecordingDependencyVisitorTest { |
| |
| private DependencyNode parse(String resource) throws Exception { |
| return new DependencyGraphParser("visitor/path-recorder/").parseResource(resource); |
| } |
| |
| private void assertPath(List<DependencyNode> actual, String... expected) { |
| assertEquals(expected.length, actual.size(), actual.toString()); |
| for (int i = 0; i < expected.length; i++) { |
| DependencyNode node = actual.get(i); |
| assertEquals(expected[i], node.getDependency().getArtifact().getArtifactId(), actual.toString()); |
| } |
| } |
| |
| @Test |
| void testGetPaths_RecordsMatchesBeneathUnmatchedParents() throws Exception { |
| DependencyNode root = parse("simple.txt"); |
| |
| PathRecordingDependencyVisitor visitor = new PathRecordingDependencyVisitor(new ArtifactMatcher()); |
| root.accept(visitor); |
| |
| List<List<DependencyNode>> paths = visitor.getPaths(); |
| assertEquals(2, paths.size(), paths.toString()); |
| assertPath(paths.get(0), "a", "b", "x"); |
| assertPath(paths.get(1), "a", "x"); |
| } |
| |
| @Test |
| void testGetPaths_DoesNotRecordMatchesBeneathMatchedParents() throws Exception { |
| DependencyNode root = parse("nested.txt"); |
| |
| PathRecordingDependencyVisitor visitor = new PathRecordingDependencyVisitor(new ArtifactMatcher()); |
| root.accept(visitor); |
| |
| List<List<DependencyNode>> paths = visitor.getPaths(); |
| assertEquals(1, paths.size(), paths.toString()); |
| assertPath(paths.get(0), "x"); |
| } |
| |
| @Test |
| void testGetPaths_RecordsMatchesBeneathMatchedParentsIfRequested() throws Exception { |
| DependencyNode root = parse("nested.txt"); |
| |
| PathRecordingDependencyVisitor visitor = new PathRecordingDependencyVisitor(new ArtifactMatcher(), false); |
| root.accept(visitor); |
| |
| List<List<DependencyNode>> paths = visitor.getPaths(); |
| assertEquals(3, paths.size(), paths.toString()); |
| assertPath(paths.get(0), "x"); |
| assertPath(paths.get(1), "x", "a", "y"); |
| assertPath(paths.get(2), "x", "y"); |
| } |
| |
| @Test |
| void testFilterCalledWithProperParentStack() throws Exception { |
| DependencyNode root = parse("parents.txt"); |
| |
| final StringBuilder buffer = new StringBuilder(256); |
| DependencyFilter filter = new DependencyFilter() { |
| public boolean accept(DependencyNode node, List<DependencyNode> parents) { |
| requireNonNull(node, "node cannot be null"); |
| requireNonNull(parents, "parents cannot be null"); |
| for (DependencyNode parent : parents) { |
| buffer.append(parent.getDependency().getArtifact().getArtifactId()); |
| } |
| buffer.append(","); |
| return false; |
| } |
| }; |
| |
| PathRecordingDependencyVisitor visitor = new PathRecordingDependencyVisitor(filter); |
| root.accept(visitor); |
| |
| assertEquals(",a,ba,cba,a,ea,", buffer.toString()); |
| } |
| |
| @Test |
| void testGetPaths_HandlesCycles() throws Exception { |
| DependencyNode root = parse("cycle.txt"); |
| |
| PathRecordingDependencyVisitor visitor = new PathRecordingDependencyVisitor(new ArtifactMatcher(), false); |
| root.accept(visitor); |
| |
| List<List<DependencyNode>> paths = visitor.getPaths(); |
| assertEquals(4, paths.size(), paths.toString()); |
| assertPath(paths.get(0), "a", "b", "x"); |
| assertPath(paths.get(1), "a", "x"); |
| assertPath(paths.get(2), "a", "x", "b", "x"); |
| assertPath(paths.get(3), "a", "x", "x"); |
| } |
| |
| @Test |
| void testGetPaths_HandlesCycles_threePaths() throws Exception { |
| DependencyNode root = parse("cycle-3paths.txt"); |
| |
| PathRecordingDependencyVisitor visitor = new PathRecordingDependencyVisitor(new ArtifactMatcher()); |
| root.accept(visitor); |
| |
| List<List<DependencyNode>> paths = visitor.getPaths(); |
| assertEquals(1, paths.size(), paths.toString()); |
| assertPath(paths.get(0), "a", "b"); |
| } |
| |
| private static class ArtifactMatcher implements DependencyFilter { |
| public boolean accept(DependencyNode node, List<DependencyNode> parents) { |
| return node.getDependency() != null |
| && node.getDependency().getArtifact().getGroupId().equals("match"); |
| } |
| } |
| } |