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.assertEquals;
020import static org.junit.Assert.assertNotNull;
021import static org.junit.Assert.assertNull;
022import static org.junit.Assert.assertTrue;
023
024import org.apache.commons.functor.BaseFunctorTest;
025import org.apache.commons.functor.Function;
026import org.apache.commons.functor.core.Constant;
027import org.apache.commons.functor.core.LeftIdentity;
028import org.apache.commons.functor.core.RightIdentity;
029import org.junit.Test;
030
031/**
032 * @version $Revision: 1508677 $ $Date: 2013-07-31 00:48:02 +0200 (Mi, 31 Jul 2013) $
033 */
034public class TestRightBoundFunction extends BaseFunctorTest {
035
036    // Functor Testing Framework
037    // ------------------------------------------------------------------------
038
039    @Override
040    protected Object makeFunctor() {
041        return new RightBoundFunction<Object, Object>(LeftIdentity.FUNCTION,"xyzzy");
042    }
043
044    // Tests
045    // ------------------------------------------------------------------------
046
047    @Test
048    public void testEvaluate() throws Exception {
049        Function<String, String> f = RightBoundFunction.bind(LeftIdentity.<String, String>function(),"foo");
050        assertEquals("xyzzy",f.evaluate("xyzzy"));
051    }
052
053    @Test
054    public void testEquals() throws Exception {
055        Function<Object, Object> f = RightBoundFunction.bind(LeftIdentity.FUNCTION,"xyzzy");
056        assertEquals(f,f);
057        assertObjectsAreEqual(f,new RightBoundFunction<Object, Object>(LeftIdentity.FUNCTION,"xyzzy"));
058        assertObjectsAreNotEqual(f,Constant.of("xyzzy"));
059        assertObjectsAreNotEqual(f,new RightBoundFunction<Object, Object>(RightIdentity.FUNCTION,"xyzzy"));
060        assertObjectsAreNotEqual(f,new RightBoundFunction<Object, Object>(LeftIdentity.FUNCTION,"bar"));
061        assertObjectsAreNotEqual(f,new RightBoundFunction<Object, Object>(LeftIdentity.FUNCTION,null));
062        assertObjectsAreEqual(new RightBoundFunction<Object, Object>(LeftIdentity.FUNCTION,null),new RightBoundFunction<Object, Object>(LeftIdentity.FUNCTION,null));
063        assertTrue(!f.equals(null));
064    }
065
066    @Test
067    public void testAdaptNull() throws Exception {
068        assertNull(RightBoundFunction.bind(null,"xyzzy"));
069    }
070
071    @Test
072    public void testAdapt() throws Exception {
073        assertNotNull(RightBoundFunction.bind(LeftIdentity.FUNCTION,"xyzzy"));
074        assertNotNull(RightBoundFunction.bind(LeftIdentity.FUNCTION,null));
075    }
076}