001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.commons.functor.adapter;
018
019import static org.junit.Assert.*;
020
021import org.apache.commons.functor.BaseFunctorTest;
022import org.apache.commons.functor.BinaryFunction;
023import org.apache.commons.functor.core.Constant;
024import org.junit.Test;
025
026/**
027 * @version $Revision: 1365377 $ $Date: 2012-07-25 02:59:23 +0200 (Mi, 25 Jul 2012) $
028 */
029public class TestBinaryPredicateBinaryFunction extends BaseFunctorTest {
030
031    // Functor Testing Framework
032    // ------------------------------------------------------------------------
033
034    @Override
035    protected Object makeFunctor() {
036        return new BinaryPredicateBinaryFunction<Object, Object>(Constant.TRUE);
037    }
038
039    // Tests
040    // ------------------------------------------------------------------------
041
042    @Test
043    public void testTestWhenTrue() throws Exception {
044        BinaryFunction<Object, Object, Boolean> f = new BinaryPredicateBinaryFunction<Object, Object>(Constant.TRUE);
045        assertEquals(Boolean.TRUE, f.evaluate(null,null));
046    }
047
048    @Test
049    public void testTestWhenFalse() throws Exception {
050        BinaryFunction<Object, Object, Boolean> f = new BinaryPredicateBinaryFunction<Object, Object>(Constant.FALSE);
051        assertEquals(Boolean.FALSE, f.evaluate(null,null));
052    }
053
054    @Test
055    public void testEquals() throws Exception {
056        BinaryFunction<Object, Object, Boolean> f = new BinaryPredicateBinaryFunction<Object, Object>(Constant.TRUE);
057        assertEquals(f,f);
058        assertObjectsAreEqual(f,new BinaryPredicateBinaryFunction<Object, Object>(Constant.TRUE));
059        assertObjectsAreNotEqual(f,Constant.of("x"));
060        assertObjectsAreNotEqual(f,new BinaryPredicateBinaryFunction<Object, Object>(Constant.FALSE));
061        assertTrue(!f.equals(null));
062    }
063
064    @Test
065    public void testAdaptNull() throws Exception {
066        assertNull(BinaryPredicateBinaryFunction.adapt(null));
067    }
068
069    @Test
070    public void testAdapt() throws Exception {
071        assertNotNull(BinaryPredicateBinaryFunction.adapt(Constant.TRUE));
072    }
073}