componentfactorytest.java

一个java工作流引擎

package org.jbpm;

import java.util.*;
import junit.framework.*;

public class ComponentFactoryTest extends TestCase {
  
  static { TestHelper.initLogging(); }
  
  public static class FirstClass {
  }

  public static class SecondClass {
  }

  public ComponentFactoryTest(String name) {
    super(name);
  }

  public void testStaticSingletonServiceLocator() throws Exception {
    Properties configuration = new Properties();
    JbpmConfiguration.configure( configuration );
    assertNotNull( JbpmServiceLocator.getInstance().getDefinitionService() );
    assertNotNull( JbpmServiceLocator.getInstance().getExecutionService() );
    assertNotNull( JbpmServiceLocator.getInstance().getLogService() );
  }

  public void testMultipleServiceLocators() throws Exception {
     
    Properties configurationOne = new Properties();
    JbpmConfiguration jbpmConfigurationOne = new JbpmConfiguration( configurationOne );
    JbpmServiceLocator serviceLocatorOne = new JbpmServiceLocator( jbpmConfigurationOne );

    Properties configurationTwo = new Properties();
    JbpmConfiguration jbpmConfigurationTwo = new JbpmConfiguration( configurationTwo );
    JbpmServiceLocator serviceLocatorTwo = new JbpmServiceLocator( jbpmConfigurationTwo );
    
    assertNotNull( serviceLocatorOne.getDefinitionService() );
    assertNotNull( serviceLocatorOne.getExecutionService() );
    assertNotNull( serviceLocatorOne.getLogService() );

    assertSame( serviceLocatorOne.getDefinitionService(), serviceLocatorOne.getDefinitionService() );
    assertSame( serviceLocatorOne.getExecutionService(), serviceLocatorOne.getExecutionService() );
    assertSame( serviceLocatorOne.getLogService(), serviceLocatorOne.getLogService() );

    assertTrue( serviceLocatorOne.getDefinitionService() != serviceLocatorTwo.getDefinitionService() );
    assertTrue( serviceLocatorOne.getExecutionService() != serviceLocatorTwo.getExecutionService() );
    assertTrue( serviceLocatorOne.getLogService() != serviceLocatorTwo.getLogService() );
  }
  
  public void testJbpmConfigurationObjectFactory() {

    Properties configurationOne = new Properties();
    configurationOne.setProperty( "same.class", "org.jbpm.ComponentFactoryTest$FirstClass" );
    configurationOne.setProperty( "different.class", "org.jbpm.ComponentFactoryTest$FirstClass" );
    JbpmConfiguration jbpmConfigurationOne = new JbpmConfiguration( new Properties(), configurationOne );

    Properties configurationTwo = new Properties();
    configurationTwo.setProperty( "same.class", "org.jbpm.ComponentFactoryTest$FirstClass" );
    configurationTwo.setProperty( "different.class", "org.jbpm.ComponentFactoryTest$SecondClass" );
    JbpmConfiguration jbpmConfigurationTwo = new JbpmConfiguration( new Properties(), configurationTwo );
    
    Object commonObjectOfConfigOne = jbpmConfigurationOne.instantiate( "same.class", FirstClass.class );
    Object firstObjectOfConfigOne = jbpmConfigurationOne.instantiate( "different.class", FirstClass.class );

    Object commonObjectOfConfigTwo = jbpmConfigurationTwo.instantiate( "same.class", FirstClass.class );
    Object firstObjectOfConfigTwo = jbpmConfigurationTwo.instantiate( "different.class", SecondClass.class );
    
    assertTrue( commonObjectOfConfigOne != firstObjectOfConfigOne );
    assertTrue( commonObjectOfConfigOne != commonObjectOfConfigTwo );
    assertTrue( commonObjectOfConfigOne != firstObjectOfConfigTwo );
    assertTrue( commonObjectOfConfigTwo != firstObjectOfConfigTwo );
    assertSame( commonObjectOfConfigOne, jbpmConfigurationOne.instantiate( "same.class", FirstClass.class ) );
  }
  
  public void testJbpmConfigurationObjectFactoryCache() {
    Properties configuration = new Properties();
    configuration.setProperty( "firstclass", "org.jbpm.ComponentFactoryTest$FirstClass" );
    configuration.setProperty( "secondclass", "org.jbpm.ComponentFactoryTest$SecondClass" );
    configuration.setProperty( "unexistingclass", "UnexistingClass" );
    JbpmConfiguration jbpmConfiguration = new JbpmConfiguration( new Properties(), configuration );

    Object firstObject = jbpmConfiguration.instantiate( "firstclass", FirstClass.class );
    assertEquals( FirstClass.class, firstObject.getClass() );

    Object secondObject = jbpmConfiguration.instantiate( "secondclass", SecondClass.class );
    assertEquals( SecondClass.class, secondObject.getClass() );
    
    assertSame( firstObject, jbpmConfiguration.instantiate( "firstclass", FirstClass.class ) );

    Properties newConfiguration = new Properties();
    newConfiguration.setProperty( "firstclass", "java.lang.String" );
    JbpmConfiguration newJbpmConfiguration = new JbpmConfiguration( new Properties(), newConfiguration );
    
    Object stringObject = newJbpmConfiguration.instantiate( "firstclass", String.class );
    assertEquals( String.class, stringObject.getClass() );
  }

  public void testObjectFactoryExceptionMessages() {
    Properties configuration = new Properties();
    configuration.setProperty( "firstclass", "org.jbpm.ComponentFactoryTest$FirstClass" );
    configuration.setProperty( "secondclass", "org.jbpm.ComponentFactoryTest$SecondClass" );
    configuration.setProperty( "unexistingclass", "UnexistingClass" );
    JbpmConfiguration jbpmConfiguration = new JbpmConfiguration( new Properties(), configuration );
    
    try {
      jbpmConfiguration.instantiate( "unexistingkey", String.class );
      fail();
    } catch (ConfigurationException e) {
      assertEquals( "no class-name configured for key 'unexistingkey'", e.getMessage() );
    }

    try {
      jbpmConfiguration.instantiate( "unexistingclass", String.class );
      fail();
    } catch (ConfigurationException e) {
      assertEquals( "couldn't find UnexistingClass (as configured in key unexistingclass)", e.getMessage() );
    }

    try {
      jbpmConfiguration.instantiate( "firstclass", SecondClass.class );
      fail();
    } catch (ConfigurationException e) {
      assertEquals( "class configured in key firstclass (org.jbpm.ComponentFactoryTest$FirstClass) is not castable to a org.jbpm.ComponentFactoryTest$SecondClass", e.getMessage() );
    }
  }
}