/*
    * Copyright 2002-2014 the original author or authors.
    *
    * 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.springframework.context.annotation.spr12334;
  
  import org.junit.Test;
  
  import org.springframework.beans.factory.support.BeanDefinitionRegistry;
  import org.springframework.context.annotation.AnnotationConfigApplicationContext;
  import org.springframework.context.annotation.Configuration;
  import org.springframework.context.annotation.Import;
  import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
  import org.springframework.core.type.AnnotationMetadata;
  
  /**
   * @author Juergen Hoeller
   * @author Alex Pogrebnyak
   */
  public class Spr12334Tests {
  
  	@Test
  	public void shouldNotScanTwice() {
  		TestImport.scanned = false;
  
  		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
  		context.scan(TestImport.class.getPackage().getName());
  		context.refresh();
  		context.getBean(TestConfiguration.class);
  	}
  
  
  	@Import(TestImport.class)
  	public @interface AnotherImport {
  	}
  
  
  	@Configuration
  	@AnotherImport
  	public static class TestConfiguration {
  	}
  
  
  	public static class TestImport implements ImportBeanDefinitionRegistrar {
  
  		private static boolean scanned = false;
  
  		@Override
  		public void registerBeanDefinitions(AnnotationMetadata metadata, BeanDefinitionRegistry registry)  {
  			if (scanned) {
  				throw new IllegalStateException("Already scanned");
  			}
  			scanned = true;
  		}
  	}
  
  }