/*
* Copyright 2012 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.planner.core.heuristic.selector.move.composite;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
import org.drools.planner.core.heuristic.selector.Selector;
import org.drools.planner.core.heuristic.selector.SelectorTestUtils;
import org.drools.planner.core.heuristic.selector.common.decorator.FixedSelectorProbabilityWeightFactory;
import org.drools.planner.core.heuristic.selector.move.MoveSelector;
import org.drools.planner.core.move.DummyMove;
import org.drools.planner.core.phase.AbstractSolverPhaseScope;
import org.drools.planner.core.phase.step.AbstractStepScope;
import org.drools.planner.core.solver.scope.DefaultSolverScope;
import org.junit.Test;
import static org.drools.planner.core.testdata.util.PlannerAssert.*;
import static org.mockito.Mockito.*;
public class UnionMoveSelectorTest {
@Test
public void originSelection() {
ArrayList<MoveSelector> childMoveSelectorList = new ArrayList<MoveSelector>();
childMoveSelectorList.add(SelectorTestUtils.mockMoveSelector(
DummyMove.class, new DummyMove("a1"), new DummyMove("a2"), new DummyMove("a3")));
childMoveSelectorList.add(SelectorTestUtils.mockMoveSelector(
DummyMove.class,new DummyMove("b1"), new DummyMove("b2")));
UnionMoveSelector moveSelector = new UnionMoveSelector(childMoveSelectorList, false);
DefaultSolverScope solverScope = mock(DefaultSolverScope.class);
moveSelector.solvingStarted(solverScope);
AbstractSolverPhaseScope phaseScopeA = mock(AbstractSolverPhaseScope.class);
when(phaseScopeA.getSolverScope()).thenReturn(solverScope);
moveSelector.phaseStarted(phaseScopeA);
AbstractStepScope stepScopeA1 = mock(AbstractStepScope.class);
when(stepScopeA1.getPhaseScope()).thenReturn(phaseScopeA);
moveSelector.stepStarted(stepScopeA1);
assertAllCodesOfEndingMoveSelector(moveSelector, "a1", "a2", "a3", "b1", "b2");
moveSelector.stepEnded(stepScopeA1);
moveSelector.phaseEnded(phaseScopeA);
moveSelector.solvingEnded(solverScope);
verifySolverPhaseLifecycle(childMoveSelectorList.get(0), 1, 1, 1);
verifySolverPhaseLifecycle(childMoveSelectorList.get(1), 1, 1, 1);
}
@Test
public void randomSelection() {
ArrayList<MoveSelector> childMoveSelectorList = new ArrayList<MoveSelector>();
Map<Selector, Double> fixedProbabilityWeightMap = new HashMap<Selector, Double>();
childMoveSelectorList.add(SelectorTestUtils.mockMoveSelector(DummyMove.class,
new DummyMove("a1"), new DummyMove("a2"), new DummyMove("a3")));
fixedProbabilityWeightMap.put(childMoveSelectorList.get(0), 1000.0);
childMoveSelectorList.add(SelectorTestUtils.mockMoveSelector(DummyMove.class,
new DummyMove("b1"), new DummyMove("b2")));
fixedProbabilityWeightMap.put(childMoveSelectorList.get(1), 20.0);
UnionMoveSelector moveSelector = new UnionMoveSelector(childMoveSelectorList, true,
new FixedSelectorProbabilityWeightFactory(fixedProbabilityWeightMap));
Random workingRandom = mock(Random.class);
when(workingRandom.nextDouble()).thenReturn(1.0 / 1020.0, 1019.0 / 1020.0, 1000.0 / 1020.0, 0.0, 999.0 / 1020.0);
DefaultSolverScope solverScope = mock(DefaultSolverScope.class);
when(solverScope.getWorkingRandom()).thenReturn(workingRandom);
moveSelector.solvingStarted(solverScope);
AbstractSolverPhaseScope phaseScopeA = mock(AbstractSolverPhaseScope.class);
when(phaseScopeA.getSolverScope()).thenReturn(solverScope);
when(phaseScopeA.getWorkingRandom()).thenReturn(workingRandom);
moveSelector.phaseStarted(phaseScopeA);
AbstractStepScope stepScopeA1 = mock(AbstractStepScope.class);
when(stepScopeA1.getPhaseScope()).thenReturn(phaseScopeA);
when(stepScopeA1.getWorkingRandom()).thenReturn(workingRandom);
moveSelector.stepStarted(stepScopeA1);
// A union of ending MoveSelectors does end, even with randomSelection
assertAllCodesOfEndingMoveSelector(moveSelector, "a1", "b1", "b2", "a2", "a3");
moveSelector.stepEnded(stepScopeA1);
moveSelector.phaseEnded(phaseScopeA);
moveSelector.solvingEnded(solverScope);
verifySolverPhaseLifecycle(childMoveSelectorList.get(0), 1, 1, 1);
verifySolverPhaseLifecycle(childMoveSelectorList.get(1), 1, 1, 1);
}
}