core/runtime/src/test/java/org/qi4j/runtime/service/LazyActivatedServiceTest.java

/*
 * Copyright (c) 2008, Rickard Öberg. All Rights Reserved.
 * Copyright (c) 2012, Paul Merlin.
 *
 * Licensed 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.qi4j.runtime.service;

import junit.framework.TestCase;
import org.qi4j.api.activation.ActivatorAdapter;
import org.qi4j.api.injection.scope.Service;
import org.qi4j.api.mixin.Mixins;
import org.qi4j.api.service.ServiceComposite;
import org.qi4j.api.service.ServiceReference;
import org.qi4j.bootstrap.AssemblyException;
import org.qi4j.bootstrap.ModuleAssembly;
import org.qi4j.bootstrap.SingletonAssembler;

/**
 * Test of lazily activated services
 */
public class LazyActivatedServiceTest
    extends TestCase
{
    @Service
    ServiceReference<MyService> service;

    public static boolean isActive;

    public void testActivatable()
        throws Exception
    {
        SingletonAssembler assembly = new SingletonAssembler()
        {
            public void assemble( ModuleAssembly module )
                throws AssemblyException
            {
                module.objects( LazyActivatedServiceTest.class );
                module.services( LazyActivatedServiceTest.MyServiceComposite.class ).withActivators( TestActivator.class );
            }
        };

        assertFalse( isActive );

        assembly.module().injectTo( this );

        assertFalse( isActive );

        service.get();

        assertFalse( isActive );

        service.get().doStuff();

        assertTrue( isActive );

        assembly.application().passivate();

        assertFalse( isActive );
    }

    @Mixins( { MyServiceMixin.class } )
    public static interface MyServiceComposite
        extends MyService, ServiceComposite
    {
    }

    public static interface MyService
    {
        String doStuff();
    }

    public static class MyServiceMixin
        implements MyService
    {

        public String doStuff()
        {
            return "X";
        }
    }

    public static class TestActivator
            extends ActivatorAdapter<Object>
    {

        @Override
        public void afterActivation( Object activated )
        {
            isActive = true;
        }

        @Override
        public void afterPassivation( Object passivated )
                throws Exception
        {
            if ( !isActive ) {
                throw new Exception( "Not active!" );
            }

            isActive = false;
        }

    }
}