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MaxComparatorProcedureTest.java
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MaxComparatorProcedureTest.java
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/*
* Copyright (c) 2021 The Bank of New York Mellon.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Eclipse Distribution License v. 1.0 which accompany this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*/
package org.eclipse.collections.impl.block.procedure;
import java.util.Comparator;
import java.util.Optional;
import org.eclipse.collections.api.list.MutableList;
import org.eclipse.collections.impl.factory.Lists;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
public class MaxComparatorProcedureTest
{
@Test
public void value()
{
MaxComparatorProcedure<MutableList<Integer>> procedure =
new MaxComparatorProcedure<>(Comparator.comparingInt(value -> value.size()));
assertFalse(procedure.isVisitedAtLeastOnce());
assertFalse(procedure.getResultOptional().isPresent());
procedure.value(Lists.mutable.of(1));
assertEquals(Lists.mutable.of(1), procedure.getResult());
assertTrue(procedure.isVisitedAtLeastOnce());
Optional<MutableList<Integer>> resultOptional = procedure.getResultOptional();
assertTrue(resultOptional.isPresent());
assertEquals(procedure.getResult(), resultOptional.get());
procedure.value(Lists.mutable.of(2));
assertEquals(Lists.mutable.of(1), procedure.getResult());
procedure.value(Lists.mutable.empty());
assertEquals(Lists.mutable.of(1), procedure.getResult());
procedure.value(Lists.mutable.of(5, 6));
assertEquals(Lists.mutable.of(5, 6), procedure.getResult());
procedure.value(Lists.mutable.of(1));
assertEquals(Lists.mutable.of(5, 6), procedure.getResult());
assertTrue(procedure.isVisitedAtLeastOnce());
Optional<MutableList<Integer>> optional = procedure.getResultOptional();
assertTrue(optional.isPresent());
assertEquals(procedure.getResult(), optional.get());
}
}