001package org.eclipse.aether.util.graph.visitor; 002 003/* 004 * Licensed to the Apache Software Foundation (ASF) under one 005 * or more contributor license agreements. See the NOTICE file 006 * distributed with this work for additional information 007 * regarding copyright ownership. The ASF licenses this file 008 * to you under the Apache License, Version 2.0 (the 009 * "License"); you may not use this file except in compliance 010 * with the License. You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, 015 * software distributed under the License is distributed on an 016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 017 * KIND, either express or implied. See the License for the 018 * specific language governing permissions and limitations 019 * under the License. 020 */ 021 022import static org.junit.Assert.*; 023 024import java.util.List; 025 026import org.eclipse.aether.graph.DependencyFilter; 027import org.eclipse.aether.graph.DependencyNode; 028import org.eclipse.aether.internal.test.util.DependencyGraphParser; 029import org.junit.Test; 030 031public class FilteringDependencyVisitorTest 032{ 033 034 private DependencyNode parse( String resource ) 035 throws Exception 036 { 037 return new DependencyGraphParser( "visitor/filtering/" ).parseResource( resource ); 038 } 039 040 @Test 041 public void testFilterCalledWithProperParentStack() 042 throws Exception 043 { 044 DependencyNode root = parse( "parents.txt" ); 045 046 final StringBuilder buffer = new StringBuilder( 256 ); 047 DependencyFilter filter = new DependencyFilter() 048 { 049 public boolean accept( DependencyNode node, List<DependencyNode> parents ) 050 { 051 for ( DependencyNode parent : parents ) 052 { 053 buffer.append( parent.getDependency().getArtifact().getArtifactId() ); 054 } 055 buffer.append( "," ); 056 return false; 057 } 058 }; 059 060 FilteringDependencyVisitor visitor = new FilteringDependencyVisitor( new PreorderNodeListGenerator(), filter ); 061 root.accept( visitor ); 062 063 assertEquals( ",a,ba,cba,a,ea,", buffer.toString() ); 064 } 065 066}