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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.commons.lang3.function;
import static org.junit.jupiter.api.Assertions.assertEquals;
import java.math.BigInteger;
import java.util.concurrent.atomic.AtomicReference;
import java.util.function.Function;
import org.apache.commons.lang3.AbstractLangTest;
import org.junit.jupiter.api.Test;
/**
* Tests {@link TriFunction}.
*/
public class TriFunctionTest extends AbstractLangTest {
@Test
public void testAccept() throws Throwable {
final AtomicReference<Character> ref1 = new AtomicReference<>();
final AtomicReference<Short> ref2 = new AtomicReference<>();
final AtomicReference<String> ref3 = new AtomicReference<>();
final TriFunction<AtomicReference<Character>, AtomicReference<Short>, AtomicReference<String>, String> tri = (t, u, v) -> {
ref1.set(Character.valueOf('a'));
ref2.set(Short.valueOf((short) 1));
ref3.set("z");
return "ABC";
};
assertEquals("ABC", tri.apply(ref1, ref2, ref3));
assertEquals(Character.valueOf('a'), ref1.get());
assertEquals(Short.valueOf((short) 1), ref2.get());
assertEquals("z", ref3.get());
}
@Test
public void testAndThen() throws Throwable {
final AtomicReference<Character> ref1 = new AtomicReference<>();
final AtomicReference<Short> ref2 = new AtomicReference<>();
final AtomicReference<String> ref3 = new AtomicReference<>();
final TriFunction<AtomicReference<Character>, AtomicReference<Short>, AtomicReference<String>, String> tri = (t, u, v) -> {
ref1.set(Character.valueOf('a'));
ref2.set(Short.valueOf((short) 1));
ref3.set("z");
return "9";
};
final Function<String, BigInteger> after = t -> {
ref1.set(Character.valueOf('b'));
ref2.set(Short.valueOf((short) 2));
ref3.set("zz");
return BigInteger.valueOf(Long.parseLong(t)).add(BigInteger.ONE);
};
assertEquals(BigInteger.TEN, tri.andThen(after).apply(ref1, ref2, ref3));
assertEquals(Character.valueOf('b'), ref1.get());
assertEquals(Short.valueOf((short) 2), ref2.get());
assertEquals("zz", ref3.get());
}
}
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