libraries/eventsourcing/src/test/java/org/apache/zest/library/eventsourcing/domain/source/helper/EventRouterTest.java

/*
 * Copyright 2009-2010 Rickard Öberg AB
 *
 * 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.apache.zest.library.eventsourcing.domain.source.helper;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.json.JSONException;
import org.json.JSONObject;
import org.junit.Before;
import org.junit.Test;
import org.apache.zest.api.activation.ActivationException;
import org.apache.zest.api.value.ValueBuilder;
import org.apache.zest.bootstrap.AssemblyException;
import org.apache.zest.bootstrap.ModuleAssembly;
import org.apache.zest.bootstrap.SingletonAssembler;
import org.apache.zest.io.Inputs;
import org.apache.zest.io.Receiver;
import org.apache.zest.library.eventsourcing.domain.api.DomainEventValue;
import org.apache.zest.library.eventsourcing.domain.api.UnitOfWorkDomainEventsValue;

import static org.junit.Assert.assertEquals;
import static org.apache.zest.test.util.JSONAssert.jsonObjectsEquals;

public class EventRouterTest
{
    private List<UnitOfWorkDomainEventsValue> list;

    @Before
    public void testData()
        throws ActivationException, AssemblyException
    {
        SingletonAssembler assembler = new SingletonAssembler()
        {
            @Override
            public void assemble( ModuleAssembly module ) throws AssemblyException
            {
                module.values( UnitOfWorkDomainEventsValue.class, DomainEventValue.class );
            }
        };

        list = new ArrayList<UnitOfWorkDomainEventsValue>(  );
        {
            ValueBuilder<UnitOfWorkDomainEventsValue> builder = assembler.module().newValueBuilder( UnitOfWorkDomainEventsValue.class );
            builder.prototype().events().get().add( newDomainEvent( assembler, "Test1" ) );
            builder.prototype().events().get().add( newDomainEvent( assembler, "Test2" ) );
            builder.prototype().events().get().add( newDomainEvent( assembler, "Test3" ) );
            builder.prototype().version().set( "1.0" );
            builder.prototype().timestamp().set( System.currentTimeMillis() );
            builder.prototype().usecase().set( "Test" );
            list.add( builder.newInstance() );
        }
        {
            ValueBuilder<UnitOfWorkDomainEventsValue> builder = assembler.module().newValueBuilder( UnitOfWorkDomainEventsValue.class );
            builder.prototype().events().get().add( newDomainEvent( assembler, "Test4" ) );
            builder.prototype().events().get().add( newDomainEvent( assembler, "Test5" ) );
            builder.prototype().events().get().add( newDomainEvent( assembler, "Test6" ) );
            builder.prototype().version().set( "1.0" );
            builder.prototype().timestamp().set( System.currentTimeMillis() );
            builder.prototype().usecase().set( "Test2" );
            list.add( builder.newInstance() );
        }
    }

    private DomainEventValue newDomainEvent( SingletonAssembler assembler, String name )
    {
        ValueBuilder<DomainEventValue> eventBuilder = assembler.module().newValueBuilder( DomainEventValue.class );
        eventBuilder.prototype().entityId().set( "123" );
        eventBuilder.prototype().entityType().set( "Foo" );
        eventBuilder.prototype().parameters().set( "{}" );
        eventBuilder.prototype().name().set( name );
        return eventBuilder.newInstance();
    }

    @Test
    public void testRouter() throws IOException, JSONException
    {
        final List<DomainEventValue> matched = new ArrayList<DomainEventValue>(  );
        EventRouter<IOException> router = new EventRouter<IOException>();
        router.route( Events.withNames( "Test1", "Test2" ), new Receiver<DomainEventValue,IOException>()
        {
            @Override
            public void receive( DomainEventValue item ) throws IOException
            {
                matched.add(item);
            }
        });

        Inputs.iterable( Events.events( list ) ).transferTo( router );

        assertEquals( 2, matched.size() );
        jsonObjectsEquals( new JSONObject( matched.get( 0 ).toString() ),
                                      new JSONObject( "{\"name\":\"Test1\",\"entityType\":\"Foo\",\"entityId\":\"123\",\"parameters\":\"{}\"}" ) );
        jsonObjectsEquals( new JSONObject( matched.get( 1 ).toString() ),
                                      new JSONObject( "{\"name\":\"Test2\",\"entityType\":\"Foo\",\"entityId\":\"123\",\"parameters\":\"{}\"}" ) );
    }
}