Examples with SimpleComponent org.apache.felix.scr.integration.components.SimpleComponent used on opensource projects

Example 26 with SimpleComponent

use of org.apache.felix.scr.integration.components.SimpleComponent in project felix by apache.

the class ServiceBindGreedyTest method test_optional_multiple_dynamic.

@Test
public void test_optional_multiple_dynamic() throws Exception {
    final SimpleServiceImpl srv1 = SimpleServiceImpl.create(bundleContext, "srv1");
    String name = "test_optional_multiple_dynamic";
    ComponentConfigurationDTO cc = getDisabledConfigurationAndEnable(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp10 = SimpleComponent.INSTANCE;
    TestCase.assertNotNull(comp10);
    TestCase.assertNull(comp10.m_singleRef);
    TestCase.assertTrue(comp10.m_multiRef.contains(srv1));
    srv1.drop();
    // no delay, should be immediate
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp11 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp10, comp11);
    TestCase.assertNull(comp11.m_singleRef);
    TestCase.assertTrue(comp11.m_multiRef.isEmpty());
    final SimpleServiceImpl srv2 = SimpleServiceImpl.create(bundleContext, "srv2");
    // async binding
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp12 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp10, comp12);
    TestCase.assertNull(comp12.m_singleRef);
    TestCase.assertTrue(comp12.m_multiRef.contains(srv2));
    disableAndCheck(cc);
    // async disabling
    delay();
    final SimpleServiceImpl srv3 = SimpleServiceImpl.create(bundleContext, "srv3");
    // enable component with two services available, expect both bind
    // async enabling
    enableAndCheck(cc.description);
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp20 = SimpleComponent.INSTANCE;
    TestCase.assertNotNull(comp20);
    TestCase.assertNotSame(comp10, comp20);
    TestCase.assertNull(comp20.m_singleRef);
    TestCase.assertTrue(comp20.m_multiRef.contains(srv2));
    TestCase.assertTrue(comp20.m_multiRef.contains(srv3));
    srv2.drop();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp21 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp20, comp21);
    TestCase.assertNull(comp21.m_singleRef);
    TestCase.assertFalse(comp21.m_multiRef.contains(srv2));
    TestCase.assertTrue(comp21.m_multiRef.contains(srv3));
    // create srv4, expect bind
    final SimpleServiceImpl srv4 = SimpleServiceImpl.create(bundleContext, "srv4");
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp22 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp20, comp22);
    TestCase.assertNull(comp22.m_singleRef);
    TestCase.assertFalse(comp22.m_multiRef.contains(srv2));
    TestCase.assertTrue(comp22.m_multiRef.contains(srv3));
    TestCase.assertTrue(comp22.m_multiRef.contains(srv4));
    // drop srv4 again, expect no rebind
    srv4.drop();
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp23 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp20, comp23);
    TestCase.assertNull(comp23.m_singleRef);
    TestCase.assertFalse(comp23.m_multiRef.contains(srv2));
    TestCase.assertTrue(comp23.m_multiRef.contains(srv3));
    TestCase.assertFalse(comp23.m_multiRef.contains(srv4));
    // "reset"
    disableAndCheck(cc);
    srv3.drop();
    delay();
    // two services with service ranking (srv6 > srv5)
    final SimpleServiceImpl srv5 = SimpleServiceImpl.create(bundleContext, "srv5", 10);
    final SimpleServiceImpl srv6 = SimpleServiceImpl.create(bundleContext, "srv6", 20);
    enableAndCheck(cc.description);
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp30 = SimpleComponent.INSTANCE;
    TestCase.assertNotSame(comp20, comp30);
    TestCase.assertNull(comp30.m_singleRef);
    TestCase.assertTrue(comp30.m_multiRef.contains(srv5));
    TestCase.assertTrue(comp30.m_multiRef.contains(srv6));
    // another service with higher ranking -- no rebind !
    final SimpleServiceImpl srv7 = SimpleServiceImpl.create(bundleContext, "srv7", 30);
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp31 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp30, comp31);
    TestCase.assertNull(comp31.m_singleRef);
    TestCase.assertTrue(comp31.m_multiRef.contains(srv5));
    TestCase.assertTrue(comp31.m_multiRef.contains(srv6));
    TestCase.assertTrue(comp31.m_multiRef.contains(srv7));
    // srv6 goes, rebind to srv7
    srv6.drop();
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp32 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp30, comp32);
    TestCase.assertNull(comp32.m_singleRef);
    TestCase.assertTrue(comp32.m_multiRef.contains(srv5));
    TestCase.assertFalse(comp32.m_multiRef.contains(srv6));
    TestCase.assertTrue(comp32.m_multiRef.contains(srv7));
}

Example 27 with SimpleComponent

use of org.apache.felix.scr.integration.components.SimpleComponent in project felix by apache.

the class ServiceBindGreedyTest method test_optional_single_dynamic.

@Test
public void test_optional_single_dynamic() throws Exception {
    final SimpleServiceImpl srv1 = SimpleServiceImpl.create(bundleContext, "srv1");
    String name = "test_optional_single_dynamic";
    ComponentConfigurationDTO cc = getDisabledConfigurationAndEnable(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp10 = SimpleComponent.INSTANCE;
    TestCase.assertNotNull(comp10);
    TestCase.assertEquals(srv1, comp10.m_singleRef);
    TestCase.assertTrue(comp10.m_multiRef.isEmpty());
    srv1.drop();
    // no delay, should be immediate
    final SimpleComponent comp11 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp10, comp11);
    TestCase.assertNull(comp11.m_singleRef);
    TestCase.assertTrue(comp11.m_multiRef.isEmpty());
    final SimpleServiceImpl srv2 = SimpleServiceImpl.create(bundleContext, "srv2", 2);
    // async binding
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp12 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp10, comp12);
    TestCase.assertEquals(srv2, comp12.m_singleRef);
    TestCase.assertTrue(comp12.m_multiRef.isEmpty());
    disableAndCheck(cc);
    final SimpleServiceImpl srv3 = SimpleServiceImpl.create(bundleContext, "srv3", 2);
    // enable component with two services available of same ranking, expect srv2 bind
    // async enabling
    enableAndCheck(cc.description);
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp20 = SimpleComponent.INSTANCE;
    TestCase.assertNotNull(comp20);
    TestCase.assertNotSame(comp10, comp20);
    TestCase.assertEquals(srv2, comp20.m_singleRef);
    TestCase.assertTrue(comp20.m_multiRef.isEmpty());
    // drop srv2, expect rebind to srv3 (synchronously)
    srv2.drop();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp21 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp20, comp21);
    TestCase.assertEquals(srv3, comp21.m_singleRef);
    TestCase.assertTrue(comp21.m_multiRef.isEmpty());
    // create srv4, expect greedy rebind
    final SimpleServiceImpl srv4 = SimpleServiceImpl.create(bundleContext, "srv4", 4);
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp22 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp20, comp22);
    TestCase.assertEquals(srv4, comp22.m_singleRef);
    TestCase.assertTrue(comp22.m_multiRef.isEmpty());
    // drop srv4 again, expect rebind to srv3
    srv4.drop();
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp23 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp20, comp23);
    TestCase.assertEquals(srv3, comp23.m_singleRef);
    TestCase.assertTrue(comp23.m_multiRef.isEmpty());
    // "reset"
    disableAndCheck(cc);
    srv3.drop();
    delay();
    // two services with service ranking (srv6 > srv5)
    final SimpleServiceImpl srv5 = SimpleServiceImpl.create(bundleContext, "srv5", 10);
    final SimpleServiceImpl srv6 = SimpleServiceImpl.create(bundleContext, "srv6", 20);
    enableAndCheck(cc.description);
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp30 = SimpleComponent.INSTANCE;
    TestCase.assertNotSame(comp20, comp30);
    TestCase.assertEquals(srv6, comp30.m_singleRef);
    TestCase.assertTrue(comp30.m_multiRef.isEmpty());
    // another service with higher ranking -- greedy rebind !
    final SimpleServiceImpl srv7 = SimpleServiceImpl.create(bundleContext, "srv7", 30);
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp31 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp30, comp31);
    TestCase.assertEquals(srv7, comp31.m_singleRef);
    TestCase.assertTrue(comp31.m_multiRef.isEmpty());
    // srv6 goes, rebind to srv7
    srv6.drop();
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp32 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp30, comp32);
    TestCase.assertEquals(srv7, comp32.m_singleRef);
    TestCase.assertTrue(comp32.m_multiRef.isEmpty());
}

Example 28 with SimpleComponent

use of org.apache.felix.scr.integration.components.SimpleComponent in project felix by apache.

the class ServiceBindGreedyTest method test_required_multiple_dynamic_factory.

@Test
public void test_required_multiple_dynamic_factory() throws Exception {
    // also pid
    String name = "test_required_multiple_dynamic_factory";
    final String factoryPid = "factory_" + name;
    getConfigurationsDisabledThenEnable(name, 0, ComponentConfigurationDTO.UNSATISFIED_REFERENCE);
    // final String pid = "test_required_multiple_dynamic_factory";
    // 
    // final Component component = findComponentDescriptorByName( pid );
    // TestCase.assertNotNull( component );
    // TestCase.assertEquals( Component.STATE_DISABLED, component.getState() );
    // 
    // // async enabling (unsatisfied)
    // enableAndCheck(cc.description);
    // delay();
    // findComponentConfigurationByName(name, ComponentConfigurationDTO.UNSATISFIED_REFERENCE);
    // register service, satisfying
    final SimpleServiceImpl srv1 = SimpleServiceImpl.create(bundleContext, "srv1");
    delay();
    // TestCase.assertEquals( Component.STATE_FACTORY, component.getState() );
    // create a component instance
    final ServiceReference[] refs = bundleContext.getServiceReferences(ComponentFactory.class.getName(), "(" + ComponentConstants.COMPONENT_FACTORY + "=" + factoryPid + ")");
    TestCase.assertNotNull(refs);
    TestCase.assertEquals(1, refs.length);
    final ComponentFactory factory = (ComponentFactory) bundleContext.getService(refs[0]);
    TestCase.assertNotNull(factory);
    Hashtable<String, String> props = new Hashtable<String, String>();
    props.put(PROP_NAME_FACTORY, PROP_NAME_FACTORY);
    final ComponentInstance instance = factory.newInstance(props);
    TestCase.assertNotNull(instance);
    TestCase.assertNotNull(instance.getInstance());
    TestCase.assertEquals(SimpleComponent.INSTANCE, instance.getInstance());
    // ensure instance is bound
    final SimpleComponent sc = SimpleComponent.INSTANCE;
    TestCase.assertEquals(1, sc.m_multiRef.size());
    TestCase.assertTrue(sc.m_multiRef.contains(srv1));
    // ensure factory is not bound
    // TestCase.assertNull( component.getReferences()[0].getServiceReferences() );
    // assert two components managed
    checkConfigurationCount(name, 1, ComponentConfigurationDTO.ACTIVE);
    // final Component[] allFactoryComponents = findComponentConfigurationsByName( pid, -1 );
    // TestCase.assertNotNull( allFactoryComponents );
    // TestCase.assertEquals( 2, allFactoryComponents.length );
    // for ( int i = 0; i < allFactoryComponents.length; i++ )
    // {
    // final Component c = allFactoryComponents[i];
    // if ( c.getId() == component.getId() )
    // {
    // TestCase.assertEquals( Component.STATE_FACTORY, c.getState() );
    // }
    // else if ( c.getId() == SimpleComponent.INSTANCE.m_id )
    // {
    // TestCase.assertEquals( Component.STATE_ACTIVE, c.getState() );
    // }
    // else
    // {
    // TestCase.fail( "Unexpected Component " + c );
    // }
    // }
    // register second service
    final SimpleServiceImpl srv11 = SimpleServiceImpl.create(bundleContext, "srv11");
    delay();
    // ensure instance is bound
    TestCase.assertEquals(2, sc.m_multiRef.size());
    TestCase.assertTrue(sc.m_multiRef.contains(srv1));
    TestCase.assertTrue(sc.m_multiRef.contains(srv11));
    // ensure factory is not bound
    // TestCase.assertNull( component.getReferences()[0].getServiceReferences() );
    // drop second service and ensure unbound (and active)
    srv11.drop();
    delay();
    TestCase.assertNotNull(instance.getInstance());
    TestCase.assertEquals(SimpleComponent.INSTANCE, instance.getInstance());
    TestCase.assertEquals(1, sc.m_multiRef.size());
    TestCase.assertTrue(sc.m_multiRef.contains(srv1));
    // TestCase.assertNull( component.getReferences()[0].getServiceReferences() );
    // remove the service, expect factory to deactivate and instance to dispose
    srv1.drop();
    delay();
    checkConfigurationCount(name, 0, -1);
    TestCase.assertNull(instance.getInstance());
    // assert component factory only managed
    // TODO this check should be whether the service is registered.
    // final Component[] allFactoryComponents2 = findComponentConfigurationsByName( pid, -1 );
    // TestCase.assertNotNull( allFactoryComponents2 );
    // TestCase.assertEquals( 1, allFactoryComponents2.length );
    // for ( int i = 0; i < allFactoryComponents2.length; i++ )
    // {
    // final Component c = allFactoryComponents2[i];
    // if ( c.getId() == component.getId() )
    // {
    // TestCase.assertEquals( Component.STATE_UNSATISFIED, c.getState() );
    // }
    // else
    // {
    // TestCase.fail( "Unexpected Component " + c );
    // }
    // }
    // registeranother service, factory must come back, instance not
    final SimpleServiceImpl srv2 = SimpleServiceImpl.create(bundleContext, "srv2");
    delay();
    // TestCase.assertEquals( Component.STATE_FACTORY, component.getState() );
    TestCase.assertNull(instance.getInstance());
    // assert component factory only managed
    checkConfigurationCount(name, 0, -1);
// final Component[] allFactoryComponents3 = findComponentConfigurationsByName( pid, -1 );
// TestCase.assertNotNull( allFactoryComponents3 );
// TestCase.assertEquals( 1, allFactoryComponents3.length );
// for ( int i = 0; i < allFactoryComponents3.length; i++ )
// {
// final Component c = allFactoryComponents3[i];
// if ( c.getId() == component.getId() )
// {
// TestCase.assertEquals( Component.STATE_FACTORY, c.getState() );
// }
// else
// {
// TestCase.fail( "Unexpected Component " + c );
// }
// }
}

Example 29 with SimpleComponent

use of org.apache.felix.scr.integration.components.SimpleComponent in project felix by apache.

the class ServiceBindGreedyTest method test_required_single_dynamic.

@Test
public void test_required_single_dynamic() throws Exception {
    final SimpleServiceImpl srv1 = SimpleServiceImpl.create(bundleContext, "srv1", 1);
    String name = "test_required_single_dynamic";
    ComponentConfigurationDTO cc = getDisabledConfigurationAndEnable(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp10 = SimpleComponent.INSTANCE;
    TestCase.assertNotNull(comp10);
    TestCase.assertEquals(srv1, comp10.m_singleRef);
    TestCase.assertTrue(comp10.m_multiRef.isEmpty());
    srv1.drop();
    // no delay, should be immediate
    findComponentConfigurationByName(name, ComponentConfigurationDTO.UNSATISFIED_REFERENCE);
    final SimpleComponent comp11 = SimpleComponent.INSTANCE;
    TestCase.assertNull(comp11);
    final SimpleServiceImpl srv2 = SimpleServiceImpl.create(bundleContext, "srv2", 2);
    // async binding
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp12 = SimpleComponent.INSTANCE;
    TestCase.assertNotSame(comp10, comp12);
    TestCase.assertEquals(srv2, comp12.m_singleRef);
    TestCase.assertTrue(comp12.m_multiRef.isEmpty());
    disableAndCheck(cc);
    // async disabling
    delay();
    final SimpleServiceImpl srv3 = SimpleServiceImpl.create(bundleContext, "srv3", 2);
    // enable component with two services available of same ranking, expect srv2 bind
    // async enabling
    enableAndCheck(cc.description);
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp20 = SimpleComponent.INSTANCE;
    TestCase.assertNotNull(comp20);
    TestCase.assertNotSame(comp10, comp20);
    TestCase.assertEquals(srv2, comp20.m_singleRef);
    TestCase.assertTrue(comp20.m_multiRef.isEmpty());
    // drop srv2, expect rebind to srv3 (synchronously)
    srv2.drop();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp21 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp20, comp21);
    TestCase.assertEquals(srv3, comp21.m_singleRef);
    TestCase.assertTrue(comp21.m_multiRef.isEmpty());
    // create srv4, expect no rebind
    final SimpleServiceImpl srv4 = SimpleServiceImpl.create(bundleContext, "srv4", 2);
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp22 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp20, comp22);
    TestCase.assertEquals(srv3, comp22.m_singleRef);
    TestCase.assertTrue(comp22.m_multiRef.isEmpty());
    // drop srv4 again, expect no rebind
    srv4.drop();
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp23 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp20, comp23);
    TestCase.assertEquals(srv3, comp23.m_singleRef);
    TestCase.assertTrue(comp23.m_multiRef.isEmpty());
    // "reset"
    disableAndCheck(cc);
    srv3.drop();
    delay();
    // two services with service ranking (srv6 > srv5)
    final SimpleServiceImpl srv5 = SimpleServiceImpl.create(bundleContext, "srv5", 10);
    final SimpleServiceImpl srv6 = SimpleServiceImpl.create(bundleContext, "srv6", 20);
    enableAndCheck(cc.description);
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp30 = SimpleComponent.INSTANCE;
    TestCase.assertNotSame(comp20, comp30);
    TestCase.assertEquals(srv6, comp30.m_singleRef);
    TestCase.assertTrue(comp30.m_multiRef.isEmpty());
    // another service with higher ranking --  greedy rebind !
    final SimpleServiceImpl srv7 = SimpleServiceImpl.create(bundleContext, "srv7", 30);
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp31 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp30, comp31);
    TestCase.assertEquals(srv7, comp31.m_singleRef);
    TestCase.assertTrue(comp31.m_multiRef.isEmpty());
    // srv6 goes, no rebind to srv7
    srv6.drop();
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp32 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp30, comp32);
    TestCase.assertEquals(srv7, comp32.m_singleRef);
    TestCase.assertTrue(comp32.m_multiRef.isEmpty());
}

Example 30 with SimpleComponent

use of org.apache.felix.scr.integration.components.SimpleComponent in project felix by apache.

the class ServiceBindTest method test_optional_single_static.

@Test
public void test_optional_single_static() throws Exception {
    final SimpleServiceImpl srv1 = SimpleServiceImpl.create(bundleContext, "srv1");
    String name = "test_optional_single_static";
    ComponentConfigurationDTO cc = getDisabledConfigurationAndEnable(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp10 = SimpleComponent.INSTANCE;
    TestCase.assertNotNull(comp10);
    TestCase.assertEquals(srv1, comp10.m_singleRef);
    TestCase.assertTrue(comp10.m_multiRef.isEmpty());
    srv1.drop();
    // async reactivate
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp11 = SimpleComponent.INSTANCE;
    TestCase.assertNotSame(comp10, comp11);
    TestCase.assertNull(comp11.m_singleRef);
    TestCase.assertTrue(comp11.m_multiRef.isEmpty());
    final SimpleServiceImpl srv2 = SimpleServiceImpl.create(bundleContext, "srv2");
    // async binding
    delay();
    // static reference does not rebind unless component is cycled for other reasons !!
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp12 = SimpleComponent.INSTANCE;
    TestCase.assertNotSame(comp10, comp12);
    TestCase.assertSame(comp11, comp12);
    TestCase.assertNull(comp12.m_singleRef);
    TestCase.assertTrue(comp12.m_multiRef.isEmpty());
    disableAndCheck(cc);
    // async disabling
    delay();
    final SimpleServiceImpl srv3 = SimpleServiceImpl.create(bundleContext, "srv3");
    // enable component with two services available, expect srv2 bind
    // async enabling
    enableAndCheck(cc.description);
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp20 = SimpleComponent.INSTANCE;
    TestCase.assertNotNull(comp20);
    TestCase.assertNotSame(comp10, comp20);
    TestCase.assertEquals(srv2, comp20.m_singleRef);
    TestCase.assertTrue(comp20.m_multiRef.isEmpty());
    // drop srv2, expect rebind to srv3 (synchronously)
    srv2.drop();
    // async reactivate
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp21 = SimpleComponent.INSTANCE;
    TestCase.assertNotSame(comp20, comp21);
    TestCase.assertEquals(srv3, comp21.m_singleRef);
    TestCase.assertTrue(comp21.m_multiRef.isEmpty());
    // create srv4, expect no rebind
    final SimpleServiceImpl srv4 = SimpleServiceImpl.create(bundleContext, "srv4");
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp22 = SimpleComponent.INSTANCE;
    TestCase.assertNotSame(comp20, comp22);
    TestCase.assertSame(comp21, comp22);
    TestCase.assertEquals(srv3, comp22.m_singleRef);
    TestCase.assertTrue(comp22.m_multiRef.isEmpty());
    // drop srv4 again, expect no rebind
    srv4.drop();
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp23 = SimpleComponent.INSTANCE;
    TestCase.assertNotSame(comp20, comp23);
    TestCase.assertSame(comp21, comp23);
    TestCase.assertSame(comp22, comp23);
    TestCase.assertEquals(srv3, comp23.m_singleRef);
    TestCase.assertTrue(comp23.m_multiRef.isEmpty());
    // "reset"
    disableAndCheck(cc);
    srv3.drop();
    delay();
    // two services with service ranking (srv6 > srv5)
    final SimpleServiceImpl srv5 = SimpleServiceImpl.create(bundleContext, "srv5", 10);
    final SimpleServiceImpl srv6 = SimpleServiceImpl.create(bundleContext, "srv6", 20);
    enableAndCheck(cc.description);
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp30 = SimpleComponent.INSTANCE;
    TestCase.assertNotSame(comp23, comp30);
    TestCase.assertEquals(srv6, comp30.m_singleRef);
    TestCase.assertTrue(comp30.m_multiRef.isEmpty());
    // another service with higher ranking -- no rebind !
    final SimpleServiceImpl srv7 = SimpleServiceImpl.create(bundleContext, "srv7", 30);
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp31 = SimpleComponent.INSTANCE;
    TestCase.assertSame(comp30, comp31);
    TestCase.assertEquals(srv6, comp31.m_singleRef);
    TestCase.assertTrue(comp31.m_multiRef.isEmpty());
    // srv6 goes, rebind to srv7
    srv6.drop();
    delay();
    findComponentConfigurationByName(name, ComponentConfigurationDTO.ACTIVE);
    final SimpleComponent comp32 = SimpleComponent.INSTANCE;
    TestCase.assertNotSame(comp30, comp32);
    TestCase.assertNotSame(comp31, comp32);
    TestCase.assertEquals(srv7, comp32.m_singleRef);
    TestCase.assertTrue(comp32.m_multiRef.isEmpty());
}