core/runtime/src/test/java/org/apache/zest/runtime/unitofwork/UnitOfWorkFactoryTest.java

/*
 * Copyright 2008 Niclas Hedhman.
 *
 * 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.runtime.unitofwork;

import org.junit.Test;
import org.apache.zest.api.association.Association;
import org.apache.zest.api.association.ManyAssociation;
import org.apache.zest.api.common.UseDefaults;
import org.apache.zest.api.entity.EntityBuilder;
import org.apache.zest.api.entity.EntityComposite;
import org.apache.zest.api.mixin.Mixins;
import org.apache.zest.api.property.Property;
import org.apache.zest.api.unitofwork.UnitOfWork;
import org.apache.zest.bootstrap.AssemblyException;
import org.apache.zest.bootstrap.ModuleAssembly;
import org.apache.zest.test.AbstractQi4jTest;
import org.apache.zest.test.EntityTestAssembler;

public class UnitOfWorkFactoryTest
    extends AbstractQi4jTest
{

    public void assemble( ModuleAssembly module )
        throws AssemblyException
    {
        module.entities( AccountComposite.class,
                         OrderComposite.class,
                         ProductEntity.class,
                         CustomerComposite.class );

        new EntityTestAssembler().assemble( module );
    }

    @Test
    public void testUnitOfWork()
        throws Exception
    {
        UnitOfWork unitOfWork = module.newUnitOfWork();

        // Create product
        EntityBuilder<ProductEntity> cb = unitOfWork.newEntityBuilder( ProductEntity.class );
        cb.instance().name().set( "Chair" );
        cb.instance().price().set( 57 );
        Product chair = cb.newInstance();

        String actual = chair.name().get();
        org.junit.Assert.assertThat( "Chair.name()", actual, org.hamcrest.CoreMatchers.equalTo( "Chair" ) );
        org.junit.Assert.assertThat( "Chair.price()", chair.price().get(), org.hamcrest.CoreMatchers.equalTo( 57 ) );

        unitOfWork.complete();
    }

    @Mixins( { AccountMixin.class } )
    public interface AccountComposite
        extends Account, EntityComposite
    {
    }

    public interface Account
    {
        Property<Integer> balance();

        void add( int amount );

        void remove( int amount );
    }

    public static abstract class AccountMixin
        implements Account
    {
        public void add( int amount )
        {
            balance().set( balance().get() + amount );
        }

        public void remove( int amount )
        {
            balance().set( balance().get() - amount );
        }
    }

    public interface Customer
    {
        Association<Account> account();

        Property<String> name();
    }

    public interface CustomerComposite
        extends Customer, EntityComposite
    {
    }

    public interface LineItem
    {
        Association<Product> product();
    }

    public interface LineItemComposite
        extends LineItem, EntityComposite
    {
    }

    public interface Order
    {
        Association<Customer> customer();

        ManyAssociation<LineItem> lineItems();
    }

    public interface OrderComposite
        extends Order, EntityComposite
    {
    }

    public interface Product
    {
        @UseDefaults
        Property<String> name();

        @UseDefaults
        Property<Integer> price();
    }

    public interface ProductEntity
        extends Product, EntityComposite
    {
    }
}