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.junit.Test;
027
028 /**
029 * @version $Revision: 1171255 $ $Date: 2011-09-15 22:27:39 +0200 (Thu, 15 Sep 2011) $
030 * @author Rodney Waldhoff
031 */
032 public class TestFunctionUnaryFunction extends BaseFunctorTest {
033
034 // Functor Testing Framework
035 // ------------------------------------------------------------------------
036
037 protected Object makeFunctor() {
038 return new FunctionUnaryFunction<Object, Object>(Constant.of("xyzzy"));
039 }
040
041 // Tests
042 // ------------------------------------------------------------------------
043
044 @Test
045 public void testEvaluate() throws Exception {
046 UnaryFunction<Object, Object> f = new FunctionUnaryFunction<Object, Object>(Constant.of("xyzzy"));
047 assertEquals("xyzzy",f.evaluate(null));
048 assertEquals("xyzzy",f.evaluate("abc"));
049 }
050
051 @Test
052 public void testEquals() throws Exception {
053 UnaryFunction<Object, Object> f = new FunctionUnaryFunction<Object, Object>(Constant.of("xyzzy"));
054 assertEquals(f,f);
055 assertObjectsAreEqual(f,new FunctionUnaryFunction<Object, Object>(Constant.of("xyzzy")));
056 assertObjectsAreNotEqual(f,Constant.of("x"));
057 assertObjectsAreNotEqual(f,new FunctionUnaryFunction<Object, Object>(Constant.of(null)));
058 assertObjectsAreNotEqual(f,Constant.of(null));
059 }
060
061 @Test
062 public void testAdaptNull() throws Exception {
063 assertNull(FunctionUnaryFunction.adapt(null));
064 }
065
066 @Test
067 public void testAdapt() throws Exception {
068 assertNotNull(FunctionUnaryFunction.adapt(Constant.of("xyzzy")));
069 }
070 }