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Expresso » com » jcorporate » expresso » core » dataobjects » test » TestDataTransferObject.java
/* ====================================================================
 * The Jcorporate Apache Style Software License, Version 1.2 05-07-2002
 *
 * Copyright (c) 1995-2002 Jcorporate Ltd. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
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 *
 * 2. Redistributions in binary form must reproduce the above copyright
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 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by Jcorporate Ltd.
 *        (http://www.jcorporate.com/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
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 * 4. "Jcorporate" and product names such as "Expresso" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written permission,
 *    please contact info@jcorporate.com.
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 * 5. Products derived from this software may not be called "Expresso",
 *    or other Jcorporate product names; nor may "Expresso" or other
 *    Jcorporate product names appear in their name, without prior
 *    written permission of Jcorporate Ltd.
 *
 * 6. No product derived from this software may compete in the same
 *    market space, i.e. framework, without prior written permission
 *    of Jcorporate Ltd. For written permission, please contact
 *    partners@jcorporate.com.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Jcorporate Ltd. Contributions back
 * to the project(s) are encouraged when you make modifications.
 * Please send them to support@jcorporate.com. For more information
 * on Jcorporate Ltd. and its products, please see
 * <http://www.jcorporate.com/>.
 *
 * Portions of this software are based upon other open source
 * products and are subject to their respective licenses.
 */

package com.jcorporate.expresso.core.dataobjects.test;

import com.jcorporate.expresso.core.dataobjects.DataTransferObject;
import com.jcorporate.expresso.core.db.DBException;
import com.jcorporate.expresso.core.dbobj.SecuredDBObject;
import com.jcorporate.expresso.services.dbobj.MimeTypes;
import com.jcorporate.expresso.services.test.ExpressoTestCase;
import com.jcorporate.expresso.services.test.TestSystemInitializer;
import junit.framework.TestSuite;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.Map;


/**
 * Tests various aspects of the DataTransferObject
 *
 * @author Michael Rimov
 * @version 1.0
 */
public class TestDataTransferObject extends ExpressoTestCase {
    DataTransferObject dataTransferObject = null;
    MimeTypes mt = null;

    /**
     * Creates a new TestDataTransferObject object.
     *
     * @param testName The name of the test
     * @throws Exception Upon initialization error
     */
    public TestDataTransferObject(String testName) throws Exception {
        super(testName);
    }

    /**
     * A main function to allow testing of this class only
     *
     * @param args Unused
     * @throws Exception If an error occurs during testing
     */
    public static void main(String[] args) throws Exception {
        junit.textui.TestRunner.run(suite());
    }

    /**
     * Constructs the test suite
     *
     * @return An instantiated Junit test suite
     * @throws Exception Upon error
     */
    public static junit.framework.Test suite() throws Exception {
        return new TestSuite(TestDataTransferObject.class);
    }

    /**
     * Checks the data transfer object by verifying that the values
     * set in the data object are consistent with those that appear in the data
     * transfer object
     */
    public void testDTOValues() {
        try {
            DataTransferObject dto = mt.getDataTransferObject();
            assertTrue(TestSystemInitializer.getTestContext().equals(dto.getDataContext()));
            assertTrue(MimeTypes.class.getName().equals(dto.getObjectClassName()));

            Map fields = dto.getTableFields();
            checkFields(fields);
        } catch (DBException ex) {
            ex.printStackTrace();
            fail("Exception testing field values");
        }
    }


    /**
     * Performs similar test to testDTOValues except that the data transfer object
     * is serialized to memory, deserialized, and the values in the deserialized
     * data transfer object are checked against the original data object.
     */
    public void testDTOSerialization() {
        try {
            DataTransferObject dto = mt.getDataTransferObject();
            assertTrue(TestSystemInitializer.getTestContext().equals(dto.getDataContext()));
            assertTrue(MimeTypes.class.getName().equals(dto.getObjectClassName()));

            DataTransferObject dto2 = runThroughSerializerTransfer(dto);

            Map fields = dto.getTableFields();
            checkFields(fields);
        } catch (Exception ex) {
            ex.printStackTrace();
            fail("Exception testing field values");
        }
    }


    /**
     * Sets up the test suite by creating a mime type data object.
     *
     * @throws Exception upon setup error
     */
    protected void setUp() throws Exception {
        super.setUp();
        dataTransferObject = new DataTransferObject();
        mt = new MimeTypes(SecuredDBObject.SYSTEM_ACCOUNT);
        mt.setDataContext(TestSystemInitializer.getTestContext());
        mt.setField(MimeTypes.FLD_MIMENUMBER, 1);
        mt.setField(MimeTypes.FLD_DESCRIPTION, "Image File");
        mt.setField(MimeTypes.FLD_FILE_EXTENSIONS, ".jpg,.png,.gif");
    }

    /**
     * Checks to make sure field values are consistent
     *
     * @param fields
     */
    protected void checkFields(Map fields) {
        assertTrue(fields.containsKey(MimeTypes.FLD_MIMENUMBER));
        assertTrue(fields.containsKey(MimeTypes.FLD_DESCRIPTION));
        assertTrue(fields.containsKey(MimeTypes.FLD_FILE_EXTENSIONS));

        assertTrue("1".equals(fields.get(MimeTypes.FLD_MIMENUMBER)));
        assertTrue("Image File".equals(fields.get(MimeTypes.FLD_DESCRIPTION)));
        assertTrue(".jpg,.png,.gif".equals(fields.get(MimeTypes.FLD_FILE_EXTENSIONS)));
    }

    /**
     * Serializes a test object to memory, a serializes into a new object
     * and returns that new object
     *
     * @param testObject The object to serialize
     * @return The deserialized object
     * @throws java.io.IOException Upon I/O error
     * @throws java.lang.ClassNotFoundException
     *                             If one of the sub classes could not be found
     */
    protected DataTransferObject runThroughSerializerTransfer(DataTransferObject testObject)
            throws java.io.IOException, java.lang.ClassNotFoundException {
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(bos);
        oos.writeObject(testObject);

        ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());
        ObjectInputStream ois = new ObjectInputStream(bis);

        DataTransferObject dto2 = (DataTransferObject) ois.readObject();

        return dto2;
    }

    /**
     * Run when every test completes
     *
     * @throws Exception upon error
     */
    protected void tearDown() throws Exception {
        dataTransferObject = null;
        mt = null;
        super.tearDown();
    }
}
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