HistoryTest.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.solution.history;
import net.splitcells.gel.constraint.type.Then;
import net.splitcells.gel.solution.history.meta.type.AllocationRating;
import org.junit.jupiter.api.Tag;
import org.junit.jupiter.api.Test;
import java.util.stream.IntStream;
import static net.splitcells.dem.data.set.list.Lists.list;
import static net.splitcells.dem.testing.TestTypes.INTEGRATION_TEST;
import static net.splitcells.gel.rating.rater.ConstantRater.constantRater;
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.history.History.ALLOCATION_EVENT;
import static net.splitcells.gel.solution.history.History.META_DATA;
import static net.splitcells.gel.solution.history.event.AllocationChangeType.ADDITION;
import static net.splitcells.gel.solution.history.event.AllocationChangeType.REMOVAL;
import static org.assertj.core.api.Assertions.assertThat;
public class HistoryTest {
@Tag(INTEGRATION_TEST)
@Test
public void test_reset_to_beginning() {
final var testSubject = defineProblem()
.withDemandAttributes()
.withDemands(list(list()))
.withSupplyAttributes()
.withSupplies(list(list()))
.withConstraint(Then.then(constantRater(cost(7))))
.toProblem()
.asSolution();
testSubject.allocate(
testSubject.demands().getRawLine(0)
, testSubject.supplies().getRawLine(0));
testSubject.history().resetTo(-1);
assertThat(testSubject.history().size()).isEqualTo(0);
}
@Tag(INTEGRATION_TEST)
@Test
public void test_reset_to_middle() {
final var solution = defineProblem()
.withDemandAttributes()
.withDemands(list(list()
, list()
, list()
, list()))
.withSupplyAttributes()
.withSupplies(list(list()
, list()
, list()
, list()))
.withConstraint(Then.then(constantRater(cost(7))))
.toProblem().asSolution();
IntStream.rangeClosed(0, 3).forEach(i -> solution.allocate
(solution.demands().getRawLine(i)
, solution.supplies().getRawLine(i)));
assertThat(solution.history().size()).isEqualTo(4);
solution.history().resetTo(2);
assertThat(solution.history().size()).isEqualTo(3);
}
@Tag(INTEGRATION_TEST)
@Test
public void test_subscription_of_history_to_solution() {
final var solution = defineProblem()
.withDemandAttributes()
.withDemands(list(list()))
.withSupplyAttributes()
.withSupplies(list(list()))
.withConstraint(Then.then(constantRater(cost(7))))
.toProblem().asSolution();
assertThat(solution.history().size()).isEqualTo(0);
{
solution.allocate
(solution.demands().getRawLine(0)
, solution.supplies().getRawLine(0));
assertThat(solution.history().size()).isEqualTo(1);
final var additionEvent = solution.history().getRawLine(0);
final var additionOperation = additionEvent.value(ALLOCATION_EVENT);
assertThat(additionOperation.type()).isEqualTo(ADDITION);
assertThat(additionOperation.demand()).isEqualTo(solution.demands().getRawLine(0));
assertThat(additionOperation.supply()).isEqualTo(solution.supplies().getRawLine(0));
}
{
assertThat(solution.history().size()).isEqualTo(1);
solution.remove(0);
assertThat(solution.history().size()).isEqualTo(2);
final var removalEvent = solution.history().getRawLine(1);
final var removalOperation = removalEvent.value(ALLOCATION_EVENT);
assertThat(removalOperation.type()).isEqualTo(REMOVAL);
assertThat(removalOperation.demand()).isEqualTo(solution.demands().getRawLine(0));
assertThat(removalOperation.supply()).isEqualTo(solution.supplies().getRawLine(0));
}
}
@Tag(INTEGRATION_TEST)
@Test
public void test_history_allocation_rating() {
final var solution = defineProblem()
.withDemandAttributes()
.withDemands(list(list()))
.withSupplyAttributes()
.withSupplies(list(list()))
.withConstraint(Then.then(constantRater(cost(7))))
.toProblem().asSolution();
final var demandValue = solution.allocate
(solution.demands().getRawLine(0)
, solution.supplies().getRawLine(0));
assertThat
(solution
.history()
.getRawLine(0)
.value(META_DATA)
.value(AllocationRating.class)
.get()
.value())
.isEqualTo(cost(7));
{
solution.remove(demandValue);
assertThat
(solution
.history()
.getRawLine(1)
.value(META_DATA)
.value(AllocationRating.class)
.get()
.value()
).isEqualTo(noCost());
}
}
}