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.LeftIdentity;
028import org.apache.commons.functor.core.RightIdentity;
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 TestFullyBoundNullaryFunction extends BaseFunctorTest {
035
036    // Functor Testing Framework
037    // ------------------------------------------------------------------------
038
039    @Override
040    protected Object makeFunctor() {
041        return new FullyBoundNullaryFunction<Object>(RightIdentity.FUNCTION, null, "xyzzy");
042    }
043
044    // Tests
045    // ------------------------------------------------------------------------
046
047    @Test
048    public void testEvaluate() throws Exception {
049        NullaryFunction<Object> f = new FullyBoundNullaryFunction<Object>(RightIdentity.FUNCTION, null, "foo");
050        assertEquals("foo", f.evaluate());
051    }
052
053    @Test
054    public void testEquals() throws Exception {
055        NullaryFunction<Object> f = new FullyBoundNullaryFunction<Object>(RightIdentity.FUNCTION, null, "xyzzy");
056        assertEquals(f, f);
057        assertObjectsAreEqual(f, new FullyBoundNullaryFunction<Object>(RightIdentity.FUNCTION, null, "xyzzy"));
058        assertObjectsAreEqual(new FullyBoundNullaryFunction<Object>(RightIdentity.FUNCTION, "bar", "xyzzy"),
059                              new FullyBoundNullaryFunction<Object>(RightIdentity.FUNCTION, "bar", "xyzzy"));
060        assertObjectsAreEqual(new FullyBoundNullaryFunction<Object>(RightIdentity.FUNCTION, "bar", null),
061                              new FullyBoundNullaryFunction<Object>(RightIdentity.FUNCTION, "bar", null));
062        assertObjectsAreNotEqual(f, Constant.of("xyzzy"));
063        assertObjectsAreNotEqual(f, new FullyBoundNullaryFunction<Object>(LeftIdentity.FUNCTION, null, "xyzzy"));
064        assertObjectsAreNotEqual(f, new FullyBoundNullaryFunction<Object>(RightIdentity.FUNCTION, "bar", "xyzzy"));
065        assertObjectsAreNotEqual(f, new FullyBoundNullaryFunction<Object>(RightIdentity.FUNCTION, null, "bar"));
066        assertObjectsAreNotEqual(f, new FullyBoundNullaryFunction<Object>(RightIdentity.FUNCTION, null, null));
067        assertObjectsAreNotEqual(new FullyBoundNullaryFunction<Object>(RightIdentity.FUNCTION, "xyzzy", "bar"), new FullyBoundNullaryFunction<Object>(RightIdentity.FUNCTION, null, "bar"));
068        assertObjectsAreNotEqual(new FullyBoundNullaryFunction<Object>(RightIdentity.FUNCTION, "xyzzy", "bar"), new FullyBoundNullaryFunction<Object>(RightIdentity.FUNCTION, "bar", "bar"));
069        assertTrue(!f.equals(null));
070    }
071
072    @Test
073    public void testAdaptNull() throws Exception {
074        assertNull(FullyBoundNullaryFunction.bind(null, null, "xyzzy"));
075    }
076
077    @Test
078    public void testAdapt() throws Exception {
079        assertNotNull(FullyBoundNullaryFunction.bind(RightIdentity.FUNCTION, "xyzzy", "foobar"));
080        assertNotNull(FullyBoundNullaryFunction.bind(RightIdentity.FUNCTION, null, null));
081    }
082}