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