/*
 * Copyright 2002-2013 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.beans.factory.xml;

import static org.hamcrest.CoreMatchers.equalTo;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.fail;

import org.junit.Test;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.tests.sample.beans.TestBean;



/**
 * With Spring 3.1, bean id attributes (and all other id attributes across the
 * core schemas) are no longer typed as xsd:id, but as xsd:string.  This allows
 * for using the same bean id within nested <beans> elements.
 *
 * Duplicate ids *within the same level of nesting* will still be treated as an
 * error through the ProblemReporter, as this could never be an intended/valid
 * situation.
 *
 * @author Chris Beams
 * @since 3.1
 * @see org.springframework.beans.factory.xml.XmlBeanFactoryTests#testWithDuplicateName
 * @see org.springframework.beans.factory.xml.XmlBeanFactoryTests#testWithDuplicateNameInAlias
 */
public class DuplicateBeanIdTests {

	@Test
	public void duplicateBeanIdsWithinSameNestingLevelRaisesError() {
		DefaultListableBeanFactory bf = new DefaultListableBeanFactory();
		XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(bf);
		try {
			reader.loadBeanDefinitions(new ClassPathResource("DuplicateBeanIdTests-sameLevel-context.xml", this.getClass()));
			fail("expected parsing exception due to duplicate ids in same nesting level");
		} catch (Exception ex) {
			// expected
		}
	}

	@Test
	public void duplicateBeanIdsAcrossNestingLevels() {
		DefaultListableBeanFactory bf = new DefaultListableBeanFactory();
		XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(bf);
		reader.loadBeanDefinitions(new ClassPathResource("DuplicateBeanIdTests-multiLevel-context.xml", this.getClass()));
		TestBean testBean = bf.getBean(TestBean.class); // there should be only one
		assertThat(testBean.getName(), equalTo("nested"));
	}
}
