| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.functor.core.composite; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import org.apache.commons.functor.BaseFunctorTest; |
| import org.apache.commons.functor.UnaryFunction; |
| import org.apache.commons.functor.core.Constant; |
| import org.apache.commons.functor.core.Identity; |
| import org.junit.Test; |
| |
| /** |
| * @version $Revision$ $Date$ |
| */ |
| public class TestCompositeUnaryFunction extends BaseFunctorTest { |
| |
| // Functor Testing Framework |
| // ------------------------------------------------------------------------ |
| |
| @Override |
| protected Object makeFunctor() { |
| return Composite.function(Constant.of(3)); |
| } |
| |
| // Tests |
| // ------------------------------------------------------------------------ |
| |
| @Test |
| public void testEvaluate() throws Exception { |
| |
| assertEquals(new Integer(4),(new CompositeUnaryFunction<Object, Integer>(Constant.of(4))).evaluate(null)); |
| |
| assertEquals(new Integer(4),(Composite.function(Constant.of(4)).of(Constant.of(3)).evaluate("xyzzy"))); |
| assertEquals(new Integer(3),(new CompositeUnaryFunction<Object, Integer>(Constant.of(3)).of(Constant.of(4)).evaluate("xyzzy"))); |
| } |
| |
| @Test |
| public void testOf() throws Exception { |
| UnaryFunction<Object, Integer> uf = new UnaryFunction<Object, Integer>() { |
| public Integer evaluate(Object obj) { |
| if (obj instanceof Integer) { |
| return (((Integer) obj).intValue()) + 1; |
| } else { |
| return 1; |
| } |
| } |
| }; |
| CompositeUnaryFunction<Object, Integer> f = null; |
| for (int i = 0; i < 10; i++) { |
| f = f == null ? new CompositeUnaryFunction<Object, Integer>(uf) : f.of(uf); |
| assertEquals(Integer.valueOf(i+1),f.evaluate(null)); |
| } |
| } |
| |
| @Test |
| public void testEquals() throws Exception { |
| CompositeUnaryFunction<Object, String> f = new CompositeUnaryFunction<Object, String>(Constant.of("x")); |
| assertEquals(f,f); |
| |
| CompositeUnaryFunction<Object, String> g = new CompositeUnaryFunction<Object, String>(Constant.of("x")); |
| assertObjectsAreEqual(f,g); |
| |
| for (int i=0;i<3;i++) { |
| f = f.of(Constant.of("y")).of(Constant.of("z")); |
| assertObjectsAreNotEqual(f,g); |
| g = g.of(Constant.of("y")).of(Constant.of("z")); |
| assertObjectsAreEqual(f,g); |
| } |
| |
| assertObjectsAreNotEqual(f, Constant.of("y")); |
| assertObjectsAreNotEqual(Constant.of("y"), f); |
| assertObjectsAreNotEqual(f, Identity.instance()); |
| assertTrue(!f.equals(null)); |
| } |
| |
| } |