/*******************************************************************************
* Copyright (c) 2010, 2013 Sonatype, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Sonatype, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.aether.util.graph.visitor;
import static org.junit.Assert.*;
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.Test;
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( actual.toString(), expected.length, actual.size() );
for ( int i = 0; i < expected.length; i++ )
{
DependencyNode node = actual.get( i );
assertEquals( actual.toString(), expected[i], node.getDependency().getArtifact().getArtifactId() );
}
}
@Test
public 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( paths.toString(), 2, paths.size() );
assertPath( paths.get( 0 ), "a", "b", "x" );
assertPath( paths.get( 1 ), "a", "x" );
}
@Test
public 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( paths.toString(), 1, paths.size() );
assertPath( paths.get( 0 ), "x" );
}
@Test
public 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( paths.toString(), 3, paths.size() );
assertPath( paths.get( 0 ), "x" );
assertPath( paths.get( 1 ), "x", "a", "y" );
assertPath( paths.get( 2 ), "x", "y" );
}
@Test
public 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 )
{
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
public 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( paths.toString(), 4, paths.size() );
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" );
}
private static class ArtifactMatcher
implements DependencyFilter
{
public boolean accept( DependencyNode node, List<DependencyNode> parents )
{
return node.getDependency() != null && node.getDependency().getArtifact().getGroupId().equals( "match" );
}
}
}