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 */
017 package org.apache.commons.functor.adapter;
018
019 import static org.junit.Assert.assertEquals;
020 import static org.junit.Assert.assertNotNull;
021 import static org.junit.Assert.assertNull;
022
023 import org.apache.commons.functor.BaseFunctorTest;
024 import org.apache.commons.functor.UnaryFunction;
025 import org.apache.commons.functor.core.Constant;
026 import org.apache.commons.functor.core.LeftIdentity;
027 import org.apache.commons.functor.core.RightIdentity;
028 import org.junit.Test;
029
030 /**
031 * @version $Revision: 1171255 $ $Date: 2011-09-15 22:27:39 +0200 (Thu, 15 Sep 2011) $
032 * @author Rodney Waldhoff
033 */
034 public class TestRightBoundFunction extends BaseFunctorTest {
035
036 // Functor Testing Framework
037 // ------------------------------------------------------------------------
038
039 protected Object makeFunctor() {
040 return new RightBoundFunction<Object, Object>(LeftIdentity.FUNCTION,"xyzzy");
041 }
042
043 // Tests
044 // ------------------------------------------------------------------------
045
046 @Test
047 public void testEvaluate() throws Exception {
048 UnaryFunction<String, String> f = RightBoundFunction.bind(LeftIdentity.<String, String>function(),"foo");
049 assertEquals("xyzzy",f.evaluate("xyzzy"));
050 }
051
052 @Test
053 public void testEquals() throws Exception {
054 UnaryFunction<Object, Object> f = RightBoundFunction.bind(LeftIdentity.FUNCTION,"xyzzy");
055 assertEquals(f,f);
056 assertObjectsAreEqual(f,new RightBoundFunction<Object, Object>(LeftIdentity.FUNCTION,"xyzzy"));
057 assertObjectsAreNotEqual(f,Constant.of("xyzzy"));
058 assertObjectsAreNotEqual(f,new RightBoundFunction<Object, Object>(RightIdentity.FUNCTION,"xyzzy"));
059 assertObjectsAreNotEqual(f,new RightBoundFunction<Object, Object>(LeftIdentity.FUNCTION,"bar"));
060 }
061
062 @Test
063 public void testAdaptNull() throws Exception {
064 assertNull(RightBoundFunction.bind(null,"xyzzy"));
065 }
066
067 @Test
068 public void testAdapt() throws Exception {
069 assertNotNull(RightBoundFunction.bind(LeftIdentity.FUNCTION,"xyzzy"));
070 assertNotNull(RightBoundFunction.bind(LeftIdentity.FUNCTION,null));
071 }
072 }