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    
018    package org.apache.commons.math.util;
019    
020    import java.math.BigDecimal;
021    
022    import junit.framework.TestCase;
023    
024    import org.apache.commons.math.MathException;
025    import org.apache.commons.math.TestUtils;
026    
027    /**
028     * @version $Revision: 795975 $ $Date: 2009-07-20 15:50:12 -0400 (Mon, 20 Jul 2009) $
029     */
030    public class DefaultTransformerTest extends TestCase {
031        /**
032         * 
033         */
034        public void testTransformDouble() throws Exception {
035            double expected = 1.0;
036            Double input = Double.valueOf(expected);
037            DefaultTransformer t = new DefaultTransformer();
038            assertEquals(expected, t.transform(input), 1.0e-4);
039        }
040        
041        /**
042         * 
043         */
044        public void testTransformNull(){
045            DefaultTransformer t = new DefaultTransformer();
046            try {
047                t.transform(null);
048                fail("Expection MathException");
049            } catch (MathException e) {
050                // expected
051            }
052        }
053        
054        /**
055         * 
056         */
057        public void testTransformInteger() throws Exception {
058            double expected = 1.0;
059            Integer input = Integer.valueOf(1);
060            DefaultTransformer t = new DefaultTransformer();
061            assertEquals(expected, t.transform(input), 1.0e-4);
062        }        
063        
064        /**
065         * 
066         */
067        public void testTransformBigDecimal() throws Exception {
068            double expected = 1.0;
069            BigDecimal input = new BigDecimal("1.0");
070            DefaultTransformer t = new DefaultTransformer();
071            assertEquals(expected, t.transform(input), 1.0e-4);
072        }        
073        
074        /**
075         * 
076         */
077        public void testTransformString() throws Exception {
078            double expected = 1.0;
079            String input = "1.0";
080            DefaultTransformer t = new DefaultTransformer();
081            assertEquals(expected, t.transform(input), 1.0e-4);
082        }
083        
084        /**
085         * 
086         */
087        public void testTransformObject(){
088            Boolean input = Boolean.TRUE;
089            DefaultTransformer t = new DefaultTransformer();
090            try {
091                t.transform(input);
092                fail("Expecting MathException");
093            } catch (MathException e) {
094                // expected
095            }
096        }
097    
098        public void testSerial() {
099            assertEquals(new DefaultTransformer(), TestUtils.serializeAndRecover(new DefaultTransformer()));
100        }
101    
102    }