core/runtime/src/test/java/org/apache/zest/runtime/injection/UsesInjectionTest.java

/*
 * Copyright (c) 2007, Rickard Öberg. 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.injection;

import org.junit.Test;
import org.apache.zest.api.injection.scope.Uses;
import org.apache.zest.bootstrap.AssemblyException;
import org.apache.zest.bootstrap.ModuleAssembly;
import org.apache.zest.test.AbstractQi4jTest;

import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.notNullValue;
import static org.junit.Assert.assertThat;

/**
 * Test the @Uses annotation
 */
public class UsesInjectionTest
    extends AbstractQi4jTest
{
    public void assemble( ModuleAssembly module )
        throws AssemblyException
    {
        module.objects( InjectionTarget.class, ToBeInjected.class );
    }

    @Test
    public void givenUsedObjectWhenUseWithBuilderThenInjectReferences()
        throws Exception
    {
        ToBeInjected toBeInjected = new ToBeInjected();
        assertThat( "Injected object", module.newObject( InjectionTarget.class, toBeInjected, true )
            .getUsedObject(), is( equalTo( toBeInjected ) ) );
        assertThat( "Injected boolean", module.newObject( InjectionTarget.class, toBeInjected, true )
            .isUsedBoolean(), is( equalTo( true ) ) );
    }

    @Test
    public void givenUsedObjectBuilderWhenUseWithBuilderThenInjectNewInstance()
        throws Exception
    {
        assertThat( "Injected object", module.newObject( InjectionTarget.class, module.newObject( ToBeInjected.class ), true ), is( notNullValue() ) );
    }

    @Test
    public void givenNoUsesWhenBuilderNewInstanceThenInjectNewInstance()
        throws Exception
    {
        assertThat( "Injected object", module.newObject( InjectionTarget.class, true ), is( notNullValue() ) );
    }

    public static class InjectionTarget
    {
        @Uses
        ToBeInjected usedObject;

        @Uses
        boolean usedBoolean;

        public ToBeInjected getUsedObject()
        {
            return usedObject;
        }

        public boolean isUsedBoolean()
        {
            return usedBoolean;
        }
    }

    public static class ToBeInjected
    {
    }
}