core/runtime/src/test/java/org/apache/zest/runtime/service/ServiceFinderTest.java

/*
 * Copyright (c) 2012, Niclas Hedhman. All Rights Reserved.
 *
 * 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.service;

import org.junit.Test;
import org.apache.zest.api.mixin.Mixins;
import org.apache.zest.api.service.ServiceReference;
import org.apache.zest.bootstrap.AssemblyException;
import org.apache.zest.bootstrap.ModuleAssembly;
import org.apache.zest.test.AbstractQi4jTest;

import static org.hamcrest.core.IsEqual.equalTo;
import static org.hamcrest.core.IsNull.notNullValue;
import static org.junit.Assert.assertThat;

public class ServiceFinderTest extends AbstractQi4jTest
{

    @Override
    public void assemble( ModuleAssembly module )
        throws AssemblyException
    {
        module.services( CompileTimeService.class );
        module.services( RuntimeService.class )
            .withTypes( MyRuntimeService.class )
            .withMixins( MyRuntimeServiceMixin.class );
    }

    @Test
    public void givenServiceCompileTimeWeavingWhenFindingServiceBySuperTypeExceptServiceToBeFound()
    {
        ServiceReference<MyCompileTimeService> service = module.findService( MyCompileTimeService.class );
        assertThat( service, notNullValue() );
        assertThat( service.get(), notNullValue() );
        assertThat( service.get().doSomething(), equalTo( "Niclas" ) );
    }

    @Test
    public void givenServiceRuntimeWeavingWhenFindingServiceBySuperTypeExceptServiceToBeFound()
    {
        ServiceReference<MyRuntimeService> service = module.findService( MyRuntimeService.class );
        assertThat( service, notNullValue() );
        assertThat( service.get(), notNullValue() );
        assertThat( service.get().doSomething(), equalTo( "Niclas" ) );
    }

    @Mixins( MyCompileTimeServiceMixin.class )
    public interface MyCompileTimeService
    {
        String doSomething();
    }

    public interface MyRuntimeService
    {
        String doSomething();
    }

    public class MyCompileTimeServiceMixin
        implements MyCompileTimeService
    {

        @Override
        public String doSomething()
        {
            return "Niclas";
        }
    }

    public class MyRuntimeServiceMixin
        implements MyRuntimeService
    {

        @Override
        public String doSomething()
        {
            return "Niclas";
        }
    }

    @Mixins( CompileTimeServiceMixin.class )
    public interface CompileTimeService extends MyCompileTimeService
    {
        String anotherMethod();
    }

    @Mixins( RuntimeServiceMixin.class )
    public interface RuntimeService
    {
        String anotherMethod();
    }

    public abstract class CompileTimeServiceMixin
        implements CompileTimeService
    {
        @Override
        public String anotherMethod()
        {
            return "Hedhman";
        }
    }

    public class RuntimeServiceMixin
        implements RuntimeService
    {
        @Override
        public String anotherMethod()
        {
            return "Hedhman";
        }
    }
}