Commons Beanutils example source code file (ClassConverterTestCase.java)

This example Commons Beanutils source code file (ClassConverterTestCase.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

classconverter, classconverter, classconvertertestcase, conversionexception, conversionexception, converter, converter, integer, invalid, null, string, stringbuffer, test, test

The Commons Beanutils ClassConverterTestCase.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.TestCase;
import junit.framework.TestSuite;

import org.apache.commons.beanutils.ConversionException;
import org.apache.commons.beanutils.Converter;

/**
 * Test Case for the ClassConverter class.
 *
 * @version $Revision: 539508 $ $Date: 2007-05-18 16:57:59 +0100 (Fri, 18 May 2007) $
 */
public class ClassConverterTestCase extends TestCase {

    /**
     * Construct a new Class Converter test case.
     * @param name Test Name
     */
    public ClassConverterTestCase(String name) {
        super(name);
    }
    
    // ------------------------------------------------------------------------

    /**
     * Create Test Suite
     * @return test suite
     */
    public static TestSuite suite() {
        return new TestSuite(ClassConverterTestCase.class);        
    }

    /** Set Up */
    public void setUp() throws Exception {
    }

    /** Tear Down */
    public void tearDown() throws Exception {
    }


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

    /**
     * Test Conversion to String
     */
    public void testConvertToString() {
        Converter converter = new ClassConverter();

        assertEquals("Class Test", "java.lang.Integer", converter.convert(String.class, Integer.class));
        assertEquals("Value Test", "foo", converter.convert(String.class, "foo"));
        assertEquals("Value Test", "bar", converter.convert(String.class, new StringBuffer("bar")));
        assertEquals("Null Test",   null, converter.convert(String.class, null));
    }

    /**
     * Test Conversion to Class
     */
    public void testConvertToClass() {
        Converter converter = new ClassConverter();

        assertEquals("Class Test",        Integer.class, converter.convert(Class.class, Integer.class));
        assertEquals("String Test",       Integer.class, converter.convert(Class.class, "java.lang.Integer"));
        assertEquals("StringBuffer Test", Integer.class, converter.convert(Class.class, new StringBuffer("java.lang.Integer")));

        // Invalid Test
        try {
            converter.convert(Class.class, new Integer(6));
            fail("Expected invalid value to fail");
        } catch (ConversionException e) {
            // expected result
        }

        // Test Null
        try {
            converter.convert(Class.class, null);
            fail("Expected null value to fail");
        } catch (ConversionException e) {
            // expected result
        }
    }

    /**
     * Test Invalid Conversion with default
     */
    public void testConvertToClassDefault() {

        Converter converter = new ClassConverter(Object.class);

        assertEquals("Invalid Test", Object.class, converter.convert(Class.class, new Integer(6)));
        assertEquals("Null Test",    Object.class, converter.convert(Class.class, null));
    }

    /**
     * Test Invalid Conversion with default "null"
     */
    public void testConvertToClassDefaultNull() {

        Converter converter = new ClassConverter(null);

        assertEquals("Invalid Test", null, converter.convert(Class.class, new Integer(6)));
        assertEquals("Null Test",    null, converter.convert(Class.class, null));
    }

    /**
     * Test Array Conversion
     */
    public void testArray() {
        Converter converter = new ClassConverter();

        // Test Array Class to String
        assertEquals("Array to String", "[Ljava.lang.Boolean;", converter.convert(String.class, Boolean[].class));

        // *** N.B. for some reason the following works on m1, but not m2
        // Test String to Array Class
        // assertEquals("String to Array", Boolean[].class, converter.convert(Class.class, "[Ljava.lang.Boolean;"));
    }

    /**
     * Test Invalid
     */
    public void testInvalid() {
        Converter converter = new ClassConverter();

        // Test invalid class name
        try {
            converter.convert(Class.class, "foo.bar");
            fail("Invalid class name, expected ConversionException");
        } catch (ConversionException e) {
            // expected result
        }
    }

}