MinimalDistanceTest.java
/*
* Copyright (c) 2021 Mārtiņš Avots (Martins Avots) and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0, or the MIT License,
* which is available at https://spdx.org/licenses/MIT.html.
*
* SPDX-License-Identifier: EPL-2.0 OR MIT
*/
package net.splitcells.gel.rating.rater;
import net.splitcells.dem.data.set.list.Lists;
import net.splitcells.gel.data.database.Databases;
import net.splitcells.gel.solution.optimization.StepType;
import org.junit.jupiter.api.Tag;
import org.junit.jupiter.api.Test;
import static net.splitcells.dem.data.set.list.Lists.list;
import static net.splitcells.dem.testing.TestTypes.INTEGRATION_TEST;
import static net.splitcells.gel.constraint.type.Then.then;
import static net.splitcells.gel.data.table.attribute.AttributeI.attribute;
import static net.splitcells.gel.data.table.attribute.AttributeI.integerAttribute;
import static net.splitcells.gel.rating.rater.MinimalDistance.has_minimal_distance_of;
import static net.splitcells.gel.rating.rater.MinimalDistance.minimalDistance;
import static net.splitcells.gel.rating.type.Cost.cost;
import static net.splitcells.gel.rating.type.Cost.noCost;
import static net.splitcells.gel.solution.SolutionBuilder.defineProblem;
import static net.splitcells.gel.solution.optimization.OptimizationEvent.optimizationEvent;
import static net.splitcells.gel.solution.optimization.primitive.LinearInitialization.linearInitialization;
import static org.assertj.core.api.Assertions.assertThat;
public class MinimalDistanceTest {
@Tag(INTEGRATION_TEST)
@Test
public void test_multiple_line_addition_and_removal() {
final var integer = integerAttribute("integer");
final var testSubject = defineProblem()
.withDemandAttributes()
.withEmptyDemands(3)
.withSupplyAttributes(integer)
.withSupplies(list(
list(2)
, list(2)
, list(9)
))
.withConstraint
(then(has_minimal_distance_of(integer, 3.0)))
.toProblem()
.asSolution();
testSubject.optimize(linearInitialization());
testSubject.optimize
(optimizationEvent
(StepType.REMOVAL
, testSubject.demands().getLines(1).toLinePointer()
, testSubject.supplies().getLines(1).toLinePointer()));
testSubject.optimize
(optimizationEvent
(StepType.REMOVAL
, testSubject.demands().getLines(2).toLinePointer()
, testSubject.supplies().getLines(2).toLinePointer()));
testSubject.optimize
(optimizationEvent
(StepType.ADDITION
, testSubject.demands().getLines(1).toLinePointer()
, testSubject.supplies().getLines(2).toLinePointer()));
testSubject.optimize
(optimizationEvent
(StepType.REMOVAL
, testSubject.demands().getLines(1).toLinePointer()
, testSubject.supplies().getLines(2).toLinePointer()));
}
@Test
public void testRating() {
final var attribute = attribute(Double.class);
final var lineSupplier = Databases.database(attribute);
final var testSubject = then(minimalDistance(attribute, 2));
{
assertThat(testSubject.defying()).isEmpty();
assertThat(testSubject.complying()).isEmpty();
assertThat(testSubject.rating()).isEqualTo(noCost());
}
final var testValues = Lists.list
(lineSupplier.addTranslated(list(1.0))
, lineSupplier.addTranslated(list(3.0))
, lineSupplier.addTranslated(list(4.0))
, lineSupplier.addTranslated(list(1.0))
);
{
testSubject.register(testValues.get(0));
assertThat(testSubject.defying()).isEmpty();
assertThat(testSubject.complying()).hasSize(1);
assertThat(testSubject.rating()).isEqualTo(noCost());
}
{
testSubject.register(testValues.get(1));
assertThat(testSubject.lines().size()).isEqualTo(2);
assertThat(testSubject.lineProcessing().size()).isEqualTo(2);
assertThat(testSubject.complying()).hasSize(2);
assertThat(testSubject.defying()).isEmpty();
assertThat(testSubject.rating()).isEqualTo(noCost());
}
{
testSubject.register(testValues.get(2));
assertThat(testSubject.defying()).hasSize(2);
assertThat(testSubject.complying()).hasSize(1);
assertThat(testSubject.rating()).isEqualTo(cost(1));
}
{
testSubject.register(testValues.get(3));
assertThat(testSubject.complying()).isEmpty();
assertThat(testSubject.defying()).hasSize(4);
assertThat(testSubject.rating()).isEqualTo(cost(3));
}
{
testSubject.registerBeforeRemoval(testValues.get(0));
assertThat(testSubject.defying()).hasSize(2);
assertThat(testSubject.complying()).hasSize(1);
assertThat(testSubject.rating()).isEqualTo(cost(1));
}
{
testSubject.registerBeforeRemoval(testValues.get(1));
assertThat(testSubject.defying()).isEmpty();
assertThat(testSubject.complying()).hasSize(2);
assertThat(testSubject.rating()).isEqualTo(noCost());
}
{
testSubject.registerBeforeRemoval(testValues.get(2));
assertThat(testSubject.defying()).isEmpty();
assertThat(testSubject.complying()).hasSize(1);
assertThat(testSubject.rating()).isEqualTo(noCost());
}
{
testSubject.registerBeforeRemoval(testValues.get(3));
assertThat(testSubject.defying()).isEmpty();
assertThat(testSubject.complying()).isEmpty();
assertThat(testSubject.rating()).isEqualTo(noCost());
}
}
@Test
public void test_simple_neighbour_defiance() {
final var attribute = attribute(Double.class);
final var lineProducer = Databases.database(attribute);
final var testSubject = then(minimalDistance(attribute, 2));
{
assertThat(testSubject.defying()).isEmpty();
assertThat(testSubject.complying()).isEmpty();
assertThat(testSubject.rating()).isEqualTo(noCost());
}
final var testValues = list
(lineProducer.addTranslated(list(1.0))
, lineProducer.addTranslated(list(1.0))
, lineProducer.addTranslated(list(1.0))
);
{
testSubject.register(testValues.get(0));
assertThat(testSubject.defying()).isEmpty();
assertThat(testSubject.complying()).hasSize(1);
assertThat(testSubject.rating()).isEqualTo(noCost());
}
{
testSubject.register(testValues.get(1));
assertThat(testSubject.complying()).isEmpty();
assertThat(testSubject.defying()).hasSize(2);
assertThat(testSubject.rating()).isEqualTo(cost(2));
}
{
testSubject.register(testValues.get(2));
assertThat(testSubject.defying()).hasSize(3);
assertThat(testSubject.complying()).isEmpty();
assertThat(testSubject.rating()).isEqualTo(cost(6));
}
{
testSubject.registerBeforeRemoval(testValues.get(0));
assertThat(testSubject.defying()).hasSize(2);
assertThat(testSubject.complying()).isEmpty();
assertThat(testSubject.rating()).isEqualTo(cost(2));
}
{
testSubject.registerBeforeRemoval(testValues.get(1));
assertThat(testSubject.defying()).isEmpty();
assertThat(testSubject.complying()).hasSize(1);
assertThat(testSubject.rating()).isEqualTo(noCost());
}
{
testSubject.registerBeforeRemoval(testValues.get(2));
assertThat(testSubject.defying()).isEmpty();
assertThat(testSubject.complying()).isEmpty();
assertThat(testSubject.rating()).isEqualTo(noCost());
}
}
}