001/*
002 * $Id$
003 */
004
005package edu.jas.gb;
006
007
008import java.io.IOException;
009import java.io.Reader;
010import java.io.StringReader;
011import java.util.ArrayList;
012import java.util.List;
013
014import junit.framework.Test;
015import junit.framework.TestCase;
016import junit.framework.TestSuite;
017
018import org.apache.logging.log4j.LogManager;
019import org.apache.logging.log4j.Logger;
020
021import edu.jas.arith.BigRational;
022// import edu.jas.kern.ComputerThreads;
023import edu.jas.poly.GenPolynomial;
024import edu.jas.poly.GenPolynomialRing;
025import edu.jas.poly.GenPolynomialTokenizer;
026import edu.jas.poly.PolynomialList;
027
028
029/**
030 * Groebner base sig based via jython tests with JUnit.
031 * @author Heinz Kredel.
032 */
033
034public class GBSigBasedTest extends TestCase {
035
036
037    private static final Logger logger = LogManager.getLogger(GBSigBasedTest.class);
038
039
040    /**
041     * main
042     @param args not used
043     */
044    public static void main(String[] args) {
045        junit.textui.TestRunner.run(suite());
046    }
047
048
049    /**
050     * Constructs a <CODE>GBSigBasedTest</CODE> object.
051     * @param name String.
052     */
053    public GBSigBasedTest(String name) {
054        super(name);
055    }
056
057
058    /**
059     * suite.
060     * @return test suite.
061     */
062    public static Test suite() {
063        TestSuite suite = new TestSuite(GBSigBasedTest.class);
064        return suite;
065    }
066
067
068    GenPolynomialRing<BigRational> fac;
069
070
071    List<GenPolynomial<BigRational>> L;
072
073
074    PolynomialList<BigRational> F;
075
076
077    List<GenPolynomial<BigRational>> G, Gn;
078
079
080    GroebnerBaseAbstract<BigRational> bb;
081
082
083    GroebnerBaseAbstract<BigRational> bbn;
084
085
086    GenPolynomial<BigRational> a, b, c, d, e;
087
088
089    int rl = 3; //4; //3; 
090
091
092    int kl = 5; //10;
093
094
095    int ll = 5; //7;
096
097
098    int el = 3;
099
100
101    float q = 0.2f; //0.4f
102
103
104    @Override
105    protected void setUp() {
106        BigRational coeff = new BigRational(9);
107        fac = new GenPolynomialRing<BigRational>(coeff, rl);
108        a = b = c = d = e = null;
109        //bb = new GBSigBased<BigRational>();
110        bb = new GBSigBased<BigRational>(GBSigBased.GBAlgo.ggv1); //sbgb);
111        //bbn = new GroebnerBaseSeq<BigRational>(new ReductionSeq<BigRational>(),new OrderedSyzPairlist<BigRational>());
112        bbn = new GroebnerBaseSeq<BigRational>();
113        //logger.info("using " + bb);
114    }
115
116
117    @Override
118    protected void tearDown() {
119        int s = bb.cancel();
120        logger.debug("canceled tasks: " + s);
121        //assertTrue("s >= 0 " + s, s >= 0);
122        a = b = c = d = e = null;
123        fac = null;
124        bb = null;
125        bbn = null;
126    }
127
128
129    /**
130     * Test GBase.
131     */
132    public void testGBase() {
133        L = new ArrayList<GenPolynomial<BigRational>>();
134
135        a = fac.random(kl, ll, el, q);
136        b = fac.random(kl, ll, el, q);
137        c = fac.random(kl, ll, el, q);
138        d = fac.random(kl, ll, el, q);
139        e = d; //fac.random(kl, ll, el, q );
140
141        if (a.isZERO() || b.isZERO() || c.isZERO() || d.isZERO()) {
142            return;
143        }
144
145        L.add(a);
146        L = bb.GB(L);
147        assertTrue("isGB( { a } )", bb.isGB(L));
148
149        L.add(b);
150        //System.out.println("L = " + L.size() );
151        L = bb.GB(L);
152        assertTrue("isGB( { a, b } )", bb.isGB(L));
153
154        L.add(c);
155        L = bb.GB(L);
156        assertTrue("isGB( { a, b, c } )", bb.isGB(L));
157
158        L.add(d);
159        L = bb.GB(L);
160        assertTrue("isGB( { a, b, c, d } )", bb.isGB(L));
161
162        L.add(e);
163        L = bb.GB(L);
164        assertTrue("isGB( { a, b, c, d, e } )", bb.isGB(L));
165    }
166
167
168    /**
169     * Test Trinks7 GBase.
170     */
171    @SuppressWarnings({ "unchecked", "cast" })
172    public void testTrinks7GBase() {
173        //String exam = "Mod 32003 (B,S,T,Z,P,W) L " 
174        String exam = "Rat (B,S,T,Z,P,W) L " + "( " + "( 45 P + 35 S - 165 B - 36 ), "
175                        + "( 35 P + 40 Z + 25 T - 27 S ), " + "( 15 W + 25 S P + 30 Z - 18 T - 165 B**2 ), "
176                        + "( - 9 W + 15 T P + 20 S Z ), " + "( P W + 2 T Z - 11 B**3 ), "
177                        + "( 99 W - 11 B S + 3 B**2 ) " + "( 10000 B**2 + 6600 B + 2673 ) " + ") ";
178        Reader source = new StringReader(exam);
179        GenPolynomialTokenizer parser = new GenPolynomialTokenizer(source);
180        try {
181            F = (PolynomialList<BigRational>) parser.nextPolynomialSet();
182        } catch (ClassCastException e) {
183            fail("" + e);
184        } catch (IOException e) {
185            fail("" + e);
186        }
187        //System.out.println("F = " + F);
188
189        long t;
190        t = System.currentTimeMillis();
191        Gn = bbn.GB(F.list);
192        t = System.currentTimeMillis() - t;
193        System.out.println("bbn took = " + t);
194        G = bb.GB(F.list);
195        G = bb.GB(F.list);
196        assertEquals("#GB(Trinks7) == 6", 6, G.size());
197        assertTrue("isGB( GB(Trinks7) ) " + G, bb.isGB(G));
198        assertEquals("#G == #Gn", G.size(), Gn.size());
199        assertTrue("t >= 0 ", t >= 0);
200        //PolynomialList<BigRational> trinks = new PolynomialList<BigRational>(F.ring, G);
201        //System.out.println("G = " + trinks);
202        //         t = System.currentTimeMillis();
203        //         Gn = bbn.GB(F.list);
204        //         t = System.currentTimeMillis() - t;
205        //         System.out.println("bbn took = " + t);
206        //         G = bb.GB(F.list);
207        //         assertEquals("#G == #Gn", G.size(), Gn.size());
208        //         t = System.currentTimeMillis();
209        //         Gn = bbn.GB(F.list);
210        //         t = System.currentTimeMillis() - t;
211        //         System.out.println("bbn took = " + t);
212        //         G = bb.GB(F.list);
213        //         assertEquals("#G == #Gn", G.size(), Gn.size());
214        //         assertEquals("#GB(Trinks7) == 6", 6, G.size());
215    }
216
217}