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.NullaryFunction;
026import org.apache.commons.functor.core.Constant;
027import org.apache.commons.functor.core.Identity;
028import org.junit.Test;
029
030/**
031 * @version $Revision: 1365377 $ $Date: 2012-07-24 21:59:23 -0300 (Tue, 24 Jul 2012) $
032 */
033public class TestBoundNullaryFunction extends BaseFunctorTest {
034
035    // Functor Testing Framework
036    // ------------------------------------------------------------------------
037
038    @Override
039    protected Object makeFunctor() {
040        return new BoundNullaryFunction<Object>(Identity.INSTANCE,"xyzzy");
041    }
042
043    // Tests
044    // ------------------------------------------------------------------------
045
046    @Test
047    public void testEvaluate() throws Exception {
048        NullaryFunction<Object> f = new BoundNullaryFunction<Object>(Identity.INSTANCE,"xyzzy");
049        assertEquals("xyzzy",f.evaluate());
050    }
051
052    @Test
053    public void testEquals() throws Exception {
054        NullaryFunction<Object> f = new BoundNullaryFunction<Object>(Identity.INSTANCE,"xyzzy");
055        assertEquals(f,f);
056        assertObjectsAreEqual(f,new BoundNullaryFunction<Object>(Identity.INSTANCE,"xyzzy"));
057        assertObjectsAreNotEqual(f,Constant.of("xyzzy"));
058        assertObjectsAreNotEqual(f,new BoundNullaryFunction<Object>(Identity.INSTANCE,"foo"));
059        assertObjectsAreNotEqual(f,new BoundNullaryFunction<Object>(Constant.of("xyzzy"),"foo"));
060        assertObjectsAreNotEqual(f,new BoundNullaryFunction<Object>(Identity.INSTANCE,null));
061        assertTrue(!f.equals(null));
062    }
063
064    @Test
065    public void testAdaptNull() throws Exception {
066        assertNull(BoundNullaryFunction.bind(null,"xyzzy"));
067    }
068
069    @Test
070    public void testAdapt() throws Exception {
071        assertNotNull(BoundNullaryFunction.bind(Identity.INSTANCE,"xyzzy"));
072        assertNotNull(BoundNullaryFunction.bind(Identity.INSTANCE,null));
073    }
074}