001package org.eclipse.aether.util.graph.versions;
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 org.eclipse.aether.collection.DependencyCollectionContext;
025import org.eclipse.aether.collection.VersionFilter;
026import org.eclipse.aether.collection.VersionFilter.VersionFilterContext;
027import org.eclipse.aether.util.graph.version.ChainedVersionFilter;
028import org.eclipse.aether.util.graph.version.HighestVersionFilter;
029import org.eclipse.aether.util.graph.version.SnapshotVersionFilter;
030import org.junit.Test;
031
032public class ChainedVersionFilterTest
033    extends AbstractVersionFilterTest
034{
035
036    @Test
037    public void testFilterVersions()
038        throws Exception
039    {
040        VersionFilter filter =
041            ChainedVersionFilter.newInstance( new SnapshotVersionFilter(), new HighestVersionFilter() );
042        VersionFilterContext ctx = newContext( "g:a:[1,9]", "1", "2", "3-SNAPSHOT" );
043        filter.filterVersions( ctx );
044        assertVersions( ctx, "2" );
045    }
046
047    @Test
048    public void testDeriveChildFilter()
049    {
050        VersionFilter filter1 = new HighestVersionFilter();
051        VersionFilter filter2 = new VersionFilter()
052        {
053            public void filterVersions( VersionFilterContext context )
054            {
055            }
056
057            public VersionFilter deriveChildFilter( DependencyCollectionContext context )
058            {
059                return null;
060            }
061        };
062
063        VersionFilter filter = ChainedVersionFilter.newInstance( filter1 );
064        assertSame( filter, derive( filter, "g:a:1" ) );
065
066        filter = ChainedVersionFilter.newInstance( filter2 );
067        assertSame( null, derive( filter, "g:a:1" ) );
068
069        filter = ChainedVersionFilter.newInstance( filter1, filter2 );
070        assertSame( filter1, derive( filter, "g:a:1" ) );
071
072        filter = ChainedVersionFilter.newInstance( filter2, filter1 );
073        assertSame( filter1, derive( filter, "g:a:1" ) );
074    }
075
076    @SuppressWarnings( "EqualsWithItself" )
077    @Test
078    public void testEquals()
079    {
080        VersionFilter filter = ChainedVersionFilter.newInstance( new HighestVersionFilter() );
081        assertNotEquals( null, filter );
082        assertEquals( filter, filter );
083        assertEquals( filter, ChainedVersionFilter.newInstance( new HighestVersionFilter() ) );
084    }
085
086}