org.polymap.rhei.batik.layout.cp.BestFirstOptimizerTest.java Source code

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Here is the source code for org.polymap.rhei.batik.layout.cp.BestFirstOptimizerTest.java

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/* 
 * polymap.org
 * Copyright (C) 2013, Falko Brutigam. All rights reserved.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 3.0 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 */
package org.polymap.rhei.batik.layout.cp;

import static org.junit.Assert.*;

import java.util.Queue;

import org.junit.Test;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import org.polymap.rhei.batik.engine.cp.IScore;
import org.polymap.rhei.batik.engine.cp.ISolution;
import org.polymap.rhei.batik.engine.cp.ISolver;
import org.polymap.rhei.batik.engine.cp.PercentScore;
import org.polymap.rhei.batik.engine.cp.SolutionQueueBuilder;

/**
 * 
 *
 * @author <a href="http://www.polymap.de">Falko Brutigam</a>
 */
public class BestFirstOptimizerTest {

    private static Log log = LogFactory.getLog(BestFirstOptimizerTest.class);

    @Test
    public void unboundSolutionQueue() {
        Queue<TestScoredSolution> queue = SolutionQueueBuilder.create(-1);
        queue.add(new TestScoredSolution(PercentScore.NULL));
        queue.add(new TestScoredSolution(new PercentScore(10)));

        assertEquals(2, queue.size());
        //        assertEquals( PercentScore.NULL, queue.getFirst().score );
        assertEquals(new PercentScore(10), queue.peek().score);

        queue.add(new TestScoredSolution(new PercentScore(5)));
        assertEquals(3, queue.size());
        assertEquals(new PercentScore(10), queue.peek().score);

        queue.add(new TestScoredSolution(new PercentScore(5)));
        //        assertEquals( 3, queue.size() );
        //        assertEquals( new PercentScore( 5 ), queue.getFirst().score );
        assertEquals(new PercentScore(10), queue.peek().score);

        queue.add(new TestScoredSolution(new PercentScore(20)));
        //        assertEquals( 3, queue.size() );
        //        assertEquals( new PercentScore( 5 ), queue.getFirst().score );
        assertEquals(new PercentScore(20), queue.peek().score);
    }

    @Test
    public void boundSolutionQueue() {
        Queue<TestScoredSolution> queue = SolutionQueueBuilder.create(3);
        queue.add(new TestScoredSolution(PercentScore.NULL));
        queue.add(new TestScoredSolution(new PercentScore(10)));

        assertEquals(2, queue.size());
        //        assertEquals( PercentScore.NULL, queue.getFirst().score );
        assertEquals(new PercentScore(10), queue.peek().score);

        queue.add(new TestScoredSolution(new PercentScore(5)));
        assertEquals(3, queue.size());
        assertEquals(new PercentScore(10), queue.peek().score);

        queue.add(new TestScoredSolution(new PercentScore(5)));
        assertEquals(3, queue.size());
        //        assertEquals( new PercentScore( 5 ), queue.getFirst().score );
        assertEquals(new PercentScore(10), queue.peek().score);

        queue.add(new TestScoredSolution(new PercentScore(20)));
        assertEquals(3, queue.size());
        //        assertEquals( new PercentScore( 5 ), queue.getFirst().score );
        assertEquals(new PercentScore(20), queue.peek().score);
    }

    @Test
    public void percentScore() {
        PercentScore score = PercentScore.NULL;
        assertEquals(0, score.getValue());

        score = score.add(PercentScore.NULL);
        assertSame(PercentScore.NULL, score);
        assertEquals(0, score.getValue());

        score = score.add(new PercentScore(50));
        assertEquals(50, score.getValue());

        score = score.add(new PercentScore(50));
        assertEquals(50, score.getValue());

        score = score.add(new PercentScore(100));
        assertEquals(75, score.getValue());
    }

    /**
     * 
     */
    class TestScoredSolution extends ISolver.ScoredSolution {

        public TestScoredSolution(IScore score) {
            super(new TestSolution(), score);
        }

    }

    /**
     * 
     */
    class TestSolution implements ISolution {

        public TestSolution clone() {
            try {
                return (TestSolution) super.clone();
            } catch (CloneNotSupportedException e) {
                throw new RuntimeException(e);
            }
        }

        @Override
        public String surrogate() {
            // XXX Auto-generated method stub
            throw new RuntimeException("not yet implemented.");
        }

    }

}