core/api/src/test/java/org/qi4j/api/injection/scope/ThisTest.java

/*
 * Copyright 2007 Alin Dreghiciu. 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.qi4j.api.injection.scope;

import java.lang.annotation.Annotation;
import org.junit.Test;
import org.qi4j.api.common.Optional;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;

/**
 * Tests public api exposed by This annotation.
 * This will ensure that the public api does not get changed by mistake.
 */
public class ThisTest
{

    @Test
    public void retention()
        throws NoSuchFieldException
    {
        Annotation[] annotations = Annotated.class.getDeclaredField( "uses" ).getDeclaredAnnotations();
        assertNotNull( "annotations should not be null", annotations );
        assertEquals( "number of annotations", 1, annotations.length );
        assertEquals( "annotation type", This.class, annotations[ 0 ].annotationType() );
    }

    private static class Annotated
    {
        @This
        String uses;
        @Optional
        @This
        String usesOptional;
    }
}