/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* 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.optaplanner.core.impl.heuristic.selector.common.decorator;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import org.junit.Test;
import org.optaplanner.core.config.heuristic.selector.common.decorator.SelectionSorterOrder;
import org.optaplanner.core.impl.testdata.domain.TestdataSolution;
import static org.junit.Assert.*;
public class ComparatorSelectionSorterTest {
@Test
public void sort() {
Integer[] baseArray = new Integer[] {3, 4, 3, 5, 1};
List<Integer> arrayToSort = new ArrayList<>();
Collections.addAll(arrayToSort, baseArray);
ComparatorSelectionSorter<TestdataSolution, Integer> selectionSorter = new ComparatorSelectionSorter<>(new TestComparator(), SelectionSorterOrder.ASCENDING);
selectionSorter.sort(null, arrayToSort);
assertTrue(ascendingSort(arrayToSort));
arrayToSort = new ArrayList<>();
Collections.addAll(arrayToSort, baseArray);
selectionSorter = new ComparatorSelectionSorter<>(new TestComparator(), SelectionSorterOrder.DESCENDING);
selectionSorter.sort(null, arrayToSort);
assertTrue(descendingSort(arrayToSort));
}
private boolean ascendingSort(List<Integer> list) {
Integer tmp = list.get(0);
for (Integer aList : list) {
if (tmp <= aList) {
tmp = aList;
} else {
return false;
}
}
return true;
}
private boolean descendingSort(List<Integer> list) {
Integer tmp = list.get(0);
for (Integer aList : list) {
if (tmp >= aList) {
tmp = aList;
} else {
return false;
}
}
return true;
}
private class TestComparator implements Comparator<Integer> {
@Override
public int compare(Integer a, Integer b) {
return a.compareTo(b);
}
}
}