[43] | 1 | package geniusweb.bidspace.pareto;
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| 2 |
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| 3 | import static org.junit.Assert.assertEquals;
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| 4 | import static org.mockito.Matchers.any;
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| 5 | import static org.mockito.Matchers.eq;
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| 6 | import static org.mockito.Mockito.mock;
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| 7 | import static org.mockito.Mockito.when;
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| 8 |
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| 9 | import java.math.BigDecimal;
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| 10 | import java.util.Arrays;
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| 11 | import java.util.Collection;
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| 12 | import java.util.HashMap;
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| 13 | import java.util.LinkedList;
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| 14 | import java.util.List;
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| 15 | import java.util.Map;
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| 16 |
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| 17 | import org.junit.Test;
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| 18 |
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| 19 | import geniusweb.bidspace.pareto.GenericPareto;
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| 20 | import geniusweb.issuevalue.Bid;
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| 21 | import geniusweb.issuevalue.DiscreteValue;
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| 22 | import geniusweb.issuevalue.DiscreteValueSet;
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| 23 | import geniusweb.issuevalue.Domain;
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| 24 | import geniusweb.issuevalue.NumberValue;
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| 25 | import geniusweb.issuevalue.NumberValueSet;
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| 26 | import geniusweb.issuevalue.Value;
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| 27 | import geniusweb.issuevalue.ValueSet;
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| 28 | import geniusweb.profile.PartialOrdering;
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| 29 |
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| 30 | public class GenericParetoTest {
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| 31 | private static final DiscreteValue I1V2 = new DiscreteValue("i1v2");
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| 32 | private static final DiscreteValue I1V1 = new DiscreteValue("i1v1");
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| 33 | private static final NumberValue I2V1 = new NumberValue("2.00");
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| 34 | private static final NumberValue I2V2 = new NumberValue("2.45");
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| 35 | private static final NumberValue I2V3 = new NumberValue("2.90");
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| 36 | private static final String DOMAINNAME = "testdomain";
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| 37 | private static final String ISSUE1 = "issue1";
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| 38 | private static final String ISSUE2 = "issue2";
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| 39 | private static final Map<String, ValueSet> issues = new HashMap<>();
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| 40 |
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| 41 | private static final ValueSet values1;
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| 42 | private static final ValueSet values2;
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| 43 | private static final BigDecimal TWO = new BigDecimal("2");
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| 44 | private static final BigDecimal THREE = new BigDecimal("3");
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| 45 |
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| 46 | private static final Domain domain;
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| 47 | private static Bid bid1, bid2, bid3;
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| 48 |
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| 49 | static {
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| 50 | Collection<DiscreteValue> discretevalues1 = new LinkedList<>();
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| 51 | discretevalues1.add(I1V1);
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| 52 | discretevalues1.add(I1V2);
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| 53 | values1 = new DiscreteValueSet(discretevalues1);
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| 54 | issues.put(ISSUE1, values1);
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| 55 |
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| 56 | values2 = new NumberValueSet(TWO, THREE, new BigDecimal("0.45"));
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| 57 | issues.put(ISSUE2, values2);
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| 58 |
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| 59 | domain = new Domain(DOMAINNAME, issues);
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| 60 |
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| 61 | Map<String, Value> issuevalues = new HashMap<>();
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| 62 | issuevalues.put(ISSUE1, I1V1);
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| 63 | issuevalues.put(ISSUE2, I2V1);
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| 64 | bid1 = new Bid(issuevalues);
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| 65 | issuevalues.put(ISSUE1, I1V1);
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| 66 | issuevalues.put(ISSUE2, I2V2);
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| 67 | bid2 = new Bid(issuevalues);
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| 68 | issuevalues.put(ISSUE1, I1V2);
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| 69 | issuevalues.put(ISSUE2, I2V1);
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| 70 | bid3 = new Bid(issuevalues);
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| 71 |
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| 72 | }
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| 73 |
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| 74 | @Test
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| 75 | public void genericParetoTest() {
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| 76 | PartialOrdering profile1 = mock(PartialOrdering.class);
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| 77 | PartialOrdering profile2 = mock(PartialOrdering.class);
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| 78 |
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| 79 | when(profile1.getDomain()).thenReturn(domain);
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| 80 | when(profile2.getDomain()).thenReturn(domain);
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| 81 |
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| 82 | // fefault: there is no preference at all, all isPreferredOrEqual
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| 83 | // returns false and we can't remove pareto points.
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| 84 |
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| 85 | List<PartialOrdering> profiles = Arrays.asList(profile1, profile2);
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| 86 | GenericPareto pareto = new GenericPareto(profiles);
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| 87 |
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| 88 | Collection<Bid> points = pareto.getPoints();
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| 89 | assertEquals(6, points.size());
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| 90 | }
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| 91 |
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| 92 | @Test
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| 93 | public void genericParetoTest1() {
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| 94 | PartialOrdering profile1 = mock(PartialOrdering.class);
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| 95 | PartialOrdering profile2 = mock(PartialOrdering.class);
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| 96 |
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| 97 | when(profile1.getDomain()).thenReturn(domain);
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| 98 | when(profile2.getDomain()).thenReturn(domain);
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| 99 |
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| 100 | // both prefer bid1 over any other bid.
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| 101 | when(profile1.isPreferredOrEqual(eq(bid1), any(Bid.class)))
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| 102 | .thenReturn(true);
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| 103 | when(profile2.isPreferredOrEqual(eq(bid1), any(Bid.class)))
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| 104 | .thenReturn(true);
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| 105 |
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| 106 | List<PartialOrdering> profiles = Arrays.asList(profile1, profile2);
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| 107 | GenericPareto pareto = new GenericPareto(profiles);
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| 108 |
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| 109 | Collection<Bid> points = pareto.getPoints();
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| 110 | assertEquals(1, points.size());
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| 111 | assertEquals(bid1, points.iterator().next());
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| 112 | }
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| 113 |
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| 114 | @Test
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| 115 | public void genericParetoTest2() {
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| 116 | PartialOrdering profile1 = mock(PartialOrdering.class);
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| 117 | PartialOrdering profile2 = mock(PartialOrdering.class);
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| 118 |
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| 119 | when(profile1.getDomain()).thenReturn(domain);
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| 120 | when(profile2.getDomain()).thenReturn(domain);
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| 121 |
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| 122 | // both prefer bid2 over any other bid.
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| 123 | when(profile1.isPreferredOrEqual(eq(bid2), any(Bid.class)))
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| 124 | .thenReturn(true);
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| 125 | when(profile2.isPreferredOrEqual(eq(bid2), any(Bid.class)))
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| 126 | .thenReturn(true);
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| 127 | List<PartialOrdering> profiles = Arrays.asList(profile1, profile2);
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| 128 | GenericPareto pareto = new GenericPareto(profiles);
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| 129 |
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| 130 | Collection<Bid> points = pareto.getPoints();
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| 131 | // since both prefer bid2, bid is pareto point.
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| 132 | assertEquals(1, points.size());
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| 133 | assertEquals(bid2, points.iterator().next());
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| 134 | }
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| 135 |
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| 136 | @Test
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| 137 | public void genericParetoTest3() {
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| 138 | PartialOrdering profile1 = mock(PartialOrdering.class);
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| 139 | PartialOrdering profile2 = mock(PartialOrdering.class);
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| 140 |
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| 141 | when(profile1.getDomain()).thenReturn(domain);
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| 142 | when(profile2.getDomain()).thenReturn(domain);
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| 143 |
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| 144 | // profile1 prefers bid1, profile2 prefers bid2.
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| 145 | // now neither bid1 nor bid2 are dominating each other
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| 146 | // and nor does bid1 or bid2 dominate anything else.
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| 147 | when(profile1.isPreferredOrEqual(eq(bid1), any(Bid.class)))
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| 148 | .thenReturn(true);
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| 149 | when(profile2.isPreferredOrEqual(eq(bid2), any(Bid.class)))
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| 150 | .thenReturn(true);
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| 151 | List<PartialOrdering> profiles = Arrays.asList(profile1, profile2);
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| 152 | GenericPareto pareto = new GenericPareto(profiles);
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| 153 |
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| 154 | Collection<Bid> points = pareto.getPoints();
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| 155 | // since both prefer bid2, bid is pareto point.
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| 156 | assertEquals(6, points.size());
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| 157 | }
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| 158 |
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| 159 | @Test
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| 160 | public void genericParetoTest4() {
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| 161 | PartialOrdering profile1 = mock(PartialOrdering.class);
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| 162 | PartialOrdering profile2 = mock(PartialOrdering.class);
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| 163 |
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| 164 | when(profile1.getDomain()).thenReturn(domain);
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| 165 | when(profile2.getDomain()).thenReturn(domain);
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| 166 |
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| 167 | // profile1 prefers bid1, profile2 prefers bid2.
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| 168 | // but they both hate bid3.
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| 169 | when(profile1.isPreferredOrEqual(eq(bid1), any(Bid.class)))
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| 170 | .thenReturn(true);
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| 171 | when(profile1.isPreferredOrEqual(any(Bid.class), eq(bid3)))
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| 172 | .thenReturn(true);
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| 173 | when(profile2.isPreferredOrEqual(any(Bid.class), eq(bid3)))
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| 174 | .thenReturn(true);
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| 175 | when(profile2.isPreferredOrEqual(eq(bid2), any(Bid.class)))
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| 176 | .thenReturn(true);
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| 177 | List<PartialOrdering> profiles = Arrays.asList(profile1, profile2);
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| 178 | GenericPareto pareto = new GenericPareto(profiles);
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| 179 |
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| 180 | Collection<Bid> points = pareto.getPoints();
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| 181 | // both hate bid3 but don't agree on bid1/2. bid3 is ruled out.
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| 182 | assertEquals(5, points.size());
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| 183 | }
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| 184 |
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| 185 | }
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