ProcessControllerFactoryTest.java :  » Workflow-Engines » bexee » bexee » core » Java Open Source

/*
 * $Id: ProcessControllerFactoryTest.java,v 1.2 2004/11/30 15:05:26 fornp1 Exp $
 *
 * Copyright (c) 2004 Patric Fornasier, Pawel Kowalski
 * Berne University of Applied Sciences
 * School of Engineering and Information Technology
 * All rights reserved.
 */
package bexee.core;

import junit.framework.TestCase;
import bexee.util.Constants;

/**
 * @version $Revision: 1.2 $, $Date: 2004/11/30 15:05:26 $
 * @author Patric Fornasier
 */
public class ProcessControllerFactoryTest extends TestCase {

    private static final String IMPL = "bexee.core.ProcessControllerFactoryTest$MockProcessController";

    protected void tearDown() throws Exception {
        super.tearDown();

        // make sure to remove that system property again
        System.getProperties().remove(Constants.OPT_CONTROLLER);
    }

    /**
     * Test if the factory returns the correct default implementation if no
     * system property is set.
     */
    public void testGetInstance() {
        ProcessController controller = ProcessControllerFactory
                .createProcessController();
        assertTrue(controller instanceof ProcessControllerImpl);
    }
    
    /**
     * Test whether the factory returns the default implementation if an invalid
     * class name is provided.
     */
    public void testWrongClassName()
    {
        // set an invalid class name
        System.setProperty(Constants.OPT_CONTROLLER, "nonExistingClass");
        
        // check if the default implementation is created
        ProcessController controller = ProcessControllerFactory.createProcessController();
        assertTrue(controller instanceof ProcessControllerImpl);
    }

    /**
     * Test whether the factory returns the right implementation based on a
     * system property.
     */
    public void testGetInstanceBySystemProperty() {

        // set a different implementation
        System.setProperty(Constants.OPT_CONTROLLER, IMPL);

        ProcessController controller = ProcessControllerFactory
                .createProcessController();
        assertTrue(controller instanceof ProcessControllerFactoryTest.MockProcessController);
    }

    /**
     * Mock class extending the <code>ProcessControllerImpl</code> for
     * testing.
     * 
     * @version $Revision: 1.2 $, $Date: 2004/11/30 15:05:26 $
     * @author Patric Fornasier
     */
    public static class MockProcessController extends ProcessControllerImpl {

    }
}