Commons Math example source code file (DefaultTransformerTest.java)

This example Commons Math source code file (DefaultTransformerTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Commons Math tags/keywords

bigdecimal, bigdecimal, boolean, defaulttransformer, defaulttransformer, defaulttransformertest, double, exception, exception, expecting, math, mathexception, mathexception, string, testcase

The Commons Math DefaultTransformerTest.java source code

/*
 * 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.math.util;

import java.math.BigDecimal;

import junit.framework.TestCase;

import org.apache.commons.math.MathException;
import org.apache.commons.math.TestUtils;

/**
 * @version $Revision: 811685 $ $Date: 2009-09-05 13:36:48 -0400 (Sat, 05 Sep 2009) $
 */
public class DefaultTransformerTest extends TestCase {
    /**
     *
     */
    public void testTransformDouble() throws Exception {
        double expected = 1.0;
        Double input = Double.valueOf(expected);
        DefaultTransformer t = new DefaultTransformer();
        assertEquals(expected, t.transform(input), 1.0e-4);
    }

    /**
     *
     */
    public void testTransformNull(){
        DefaultTransformer t = new DefaultTransformer();
        try {
            t.transform(null);
            fail("Expection MathException");
        } catch (MathException e) {
            // expected
        }
    }

    /**
     *
     */
    public void testTransformInteger() throws Exception {
        double expected = 1.0;
        Integer input = Integer.valueOf(1);
        DefaultTransformer t = new DefaultTransformer();
        assertEquals(expected, t.transform(input), 1.0e-4);
    }

    /**
     *
     */
    public void testTransformBigDecimal() throws Exception {
        double expected = 1.0;
        BigDecimal input = new BigDecimal("1.0");
        DefaultTransformer t = new DefaultTransformer();
        assertEquals(expected, t.transform(input), 1.0e-4);
    }

    /**
     *
     */
    public void testTransformString() throws Exception {
        double expected = 1.0;
        String input = "1.0";
        DefaultTransformer t = new DefaultTransformer();
        assertEquals(expected, t.transform(input), 1.0e-4);
    }

    /**
     *
     */
    public void testTransformObject(){
        Boolean input = Boolean.TRUE;
        DefaultTransformer t = new DefaultTransformer();
        try {
            t.transform(input);
            fail("Expecting MathException");
        } catch (MathException e) {
            // expected
        }
    }

    public void testSerial() {
        assertEquals(new DefaultTransformer(), TestUtils.serializeAndRecover(new DefaultTransformer()));
    }

}