package org.apache.onami.test.mock.guice;

 /*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you 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.

  */

 import java.lang.reflect.Field;

 import java.util.Map;

 import com.google.inject.MembersInjector;

 /**

  * Class to inject via google-guice mock members into test cases classes.

  *

  * @param <T> type to inject members of

  */

 public class MockMembersInjector<T>

     implements MembersInjector<T>

 {

     private final Field field;

     private final Map<Field, Object> mockedObjects;

     /**

      * Create a new instance.

      * 

      * @param field the field that has to be injected.

      * @param mockedObjects  the map of mocked object.

      */

     public MockMembersInjector( Field field, Map<Field, Object> mockedObjects )

     {

         this.field = field;

         this.mockedObjects = mockedObjects;

     }

     /**

      * {@inheritDoc}

      */

     public void injectMembers( T t )

     {

         boolean wasAccessible = field.isAccessible();

         field.setAccessible( true );

         try

         {

             field.set( t, mockedObjects.get( field ) );

         }

         catch ( IllegalAccessException e )

         {

             throw new RuntimeException( e );

         }

         finally

         {

             field.setAccessible( wasAccessible );

         }

     }

 }