Commons Beanutils example source code file (ByteConverterTestCase.java)

This example Commons Beanutils source code file (ByteConverterTestCase.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 Beanutils tags/keywords

byte, byte, byteconvertertestcase, conversionexception, converter, exception, exception, long, long, maximum, numberconverter, short, string, string

The Commons Beanutils ByteConverterTestCase.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.beanutils.converters;

import junit.framework.TestSuite;

import org.apache.commons.beanutils.Converter;


/**
 * Test Case for the ByteConverter class.
 *
 * @author Rodney Waldhoff
 * @version $Revision: 471348 $ $Date: 2006-11-05 02:59:26 +0000 (Sun, 05 Nov 2006) $
 */

public class ByteConverterTestCase extends NumberConverterTestBase {

    private Converter converter = null;

    // ------------------------------------------------------------------------

    public ByteConverterTestCase(String name) {
        super(name);
    }
    
    // ------------------------------------------------------------------------

    public void setUp() throws Exception {
        converter = makeConverter();
        numbers[0] = new Byte("-12");
        numbers[1] = new Byte("13");
        numbers[2] = new Byte("-22");
        numbers[3] = new Byte("23");
    }

    public static TestSuite suite() {
        return new TestSuite(ByteConverterTestCase.class);        
    }

    public void tearDown() throws Exception {
        converter = null;
    }

    // ------------------------------------------------------------------------
    
    protected NumberConverter makeConverter() {
        return new ByteConverter();
    }
    
    protected NumberConverter makeConverter(Object defaultValue) {
        return new ByteConverter(defaultValue);
    }
    protected Class getExpectedType() {
        return Byte.class;
    }

    // ------------------------------------------------------------------------

    public void testSimpleConversion() throws Exception {
        String[] message= { 
            "from String",
            "from String",
            "from String",
            "from String",
            "from String",
            "from String",
            "from String",
            "from Byte",
            "from Short",
            "from Integer",
            "from Long",
            "from Float",
            "from Double"
        };
        
        Object[] input = { 
            String.valueOf(Byte.MIN_VALUE),
            "-17",
            "-1",
            "0",
            "1",
            "17",
            String.valueOf(Byte.MAX_VALUE),
            new Byte((byte)7),
            new Short((short)8),
            new Integer(9),
            new Long(10),
            new Float(11.1),
            new Double(12.2)
        };
        
        Byte[] expected = { 
            new Byte(Byte.MIN_VALUE),
            new Byte((byte)-17),
            new Byte((byte)-1),
            new Byte((byte)0),
            new Byte((byte)1),
            new Byte((byte)17),
            new Byte(Byte.MAX_VALUE),
            new Byte((byte)7),
            new Byte((byte)8),
            new Byte((byte)9),
            new Byte((byte)10),
            new Byte((byte)11),
            new Byte((byte)12)
        };
        
        for(int i=0;i<expected.length;i++) {
            assertEquals(message[i] + " to Byte",expected[i],converter.convert(Byte.class,input[i]));
            assertEquals(message[i] + " to byte",expected[i],converter.convert(Byte.TYPE,input[i]));
            assertEquals(message[i] + " to null type",expected[i],converter.convert(null,input[i]));
        }
    }

    /**
     * Test Invalid Amounts (too big/small)
     */
    public void testInvalidAmount() {
        Converter converter = makeConverter();
        Class clazz = Byte.class;

        Long min         = new Long(Byte.MIN_VALUE);
        Long max         = new Long(Byte.MAX_VALUE);
        Long minMinusOne = new Long(min.longValue() - 1);
        Long maxPlusOne  = new Long(max.longValue() + 1);

        // Minimum
        assertEquals("Minimum", new Byte(Byte.MIN_VALUE), converter.convert(clazz, min));

        // Maximum
        assertEquals("Maximum", new Byte(Byte.MAX_VALUE), converter.convert(clazz, max));

        // Too Small
        try {
            assertEquals("Minimum - 1", null, converter.convert(clazz, minMinusOne));
            fail("Less than minimum, expected ConversionException");
        } catch (Exception e) {
            // expected result
        }

        // Too Large
        try {
            assertEquals("Maximum + 1", null, converter.convert(clazz, maxPlusOne));
            fail("More than maximum, expected ConversionException");
        } catch (Exception e) {
            // expected result
        }
    }
    
}