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/* * Copyright 2002-2018 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.test.context.support; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.beans.factory.support.BeanDefinitionReader; import org.springframework.context.annotation.AnnotatedBeanDefinitionReader; import org.springframework.context.support.GenericApplicationContext; import org.springframework.test.context.ContextConfigurationAttributes; import org.springframework.test.context.MergedContextConfiguration; import org.springframework.util.ObjectUtils; /** * Concrete implementation of {@link AbstractGenericContextLoader} that loads * bean definitions from annotated classes. * * <p>See the Javadoc for * {@link org.springframework.test.context.ContextConfiguration @ContextConfiguration} * for a definition of <em>annotated class</em>. * * <p>Note: {@code AnnotationConfigContextLoader} supports <em>annotated classes</em> * rather than the String-based resource locations defined by the legacy * {@link org.springframework.test.context.ContextLoader ContextLoader} API. Thus, * although {@code AnnotationConfigContextLoader} extends * {@code AbstractGenericContextLoader}, {@code AnnotationConfigContextLoader} * does <em>not</em> support any String-based methods defined by * {@code AbstractContextLoader} or {@code AbstractGenericContextLoader}. * Consequently, {@code AnnotationConfigContextLoader} should chiefly be * considered a {@link org.springframework.test.context.SmartContextLoader SmartContextLoader} * rather than a {@link org.springframework.test.context.ContextLoader ContextLoader}. * * @author Sam Brannen * @since 3.1 * @see #processContextConfiguration(ContextConfigurationAttributes) * @see #detectDefaultConfigurationClasses(Class) * @see #loadBeanDefinitions(GenericApplicationContext, MergedContextConfiguration) * @see GenericXmlContextLoader * @see GenericGroovyXmlContextLoader */ public class AnnotationConfigContextLoader extends AbstractGenericContextLoader { private static final Log logger = LogFactory.getLog(AnnotationConfigContextLoader.class); // SmartContextLoader /** * Process <em>annotated classes</em> in the supplied {@link ContextConfigurationAttributes}. * <p>If the <em>annotated classes</em> are {@code null} or empty and * {@link #isGenerateDefaultLocations()} returns {@code true}, this * {@code SmartContextLoader} will attempt to {@link * #detectDefaultConfigurationClasses detect default configuration classes}. * If defaults are detected they will be * {@link ContextConfigurationAttributes#setClasses(Class[]) set} in the * supplied configuration attributes. Otherwise, properties in the supplied * configuration attributes will not be modified. * @param configAttributes the context configuration attributes to process * @see org.springframework.test.context.SmartContextLoader#processContextConfiguration(ContextConfigurationAttributes) * @see #isGenerateDefaultLocations() * @see #detectDefaultConfigurationClasses(Class) */ @Override public void processContextConfiguration(ContextConfigurationAttributes configAttributes) { if (!configAttributes.hasClasses() && isGenerateDefaultLocations()) { configAttributes.setClasses(detectDefaultConfigurationClasses(configAttributes.getDeclaringClass())); } } // AnnotationConfigContextLoader /** * Detect the default configuration classes for the supplied test class. * <p>The default implementation simply delegates to * {@link AnnotationConfigContextLoaderUtils#detectDefaultConfigurationClasses(Class)}. * @param declaringClass the test class that declared {@code @ContextConfiguration} * @return an array of default configuration classes, potentially empty but * never {@code null} * @see AnnotationConfigContextLoaderUtils */ protected Class<?>[] detectDefaultConfigurationClasses(Class<?> declaringClass) { return AnnotationConfigContextLoaderUtils.detectDefaultConfigurationClasses(declaringClass); } // AbstractContextLoader /** * {@code AnnotationConfigContextLoader} should be used as a * {@link org.springframework.test.context.SmartContextLoader SmartContextLoader}, * not as a legacy {@link org.springframework.test.context.ContextLoader ContextLoader}. * Consequently, this method is not supported. * @throws UnsupportedOperationException in this implementation * @see AbstractContextLoader#modifyLocations */ @Override protected String[] modifyLocations(Class<?> clazz, String... locations) { throw new UnsupportedOperationException( "AnnotationConfigContextLoader does not support the modifyLocations(Class, String...) method"); } /** * {@code AnnotationConfigContextLoader} should be used as a * {@link org.springframework.test.context.SmartContextLoader SmartContextLoader}, * not as a legacy {@link org.springframework.test.context.ContextLoader ContextLoader}. * Consequently, this method is not supported. * @throws UnsupportedOperationException in this implementation * @see AbstractContextLoader#generateDefaultLocations */ @Override protected String[] generateDefaultLocations(Class<?> clazz) { throw new UnsupportedOperationException( "AnnotationConfigContextLoader does not support the generateDefaultLocations(Class) method"); } /** * {@code AnnotationConfigContextLoader} should be used as a * {@link org.springframework.test.context.SmartContextLoader SmartContextLoader}, * not as a legacy {@link org.springframework.test.context.ContextLoader ContextLoader}. * Consequently, this method is not supported. * @throws UnsupportedOperationException in this implementation * @see AbstractContextLoader#getResourceSuffix */ @Override protected String getResourceSuffix() { throw new UnsupportedOperationException( "AnnotationConfigContextLoader does not support the getResourceSuffix() method"); } // AbstractGenericContextLoader /** * Ensure that the supplied {@link MergedContextConfiguration} does not * contain {@link MergedContextConfiguration#getLocations() locations}. * @since 4.0.4 * @see AbstractGenericContextLoader#validateMergedContextConfiguration */ @Override protected void validateMergedContextConfiguration(MergedContextConfiguration mergedConfig) { if (mergedConfig.hasLocations()) { String msg = String.format( "Test class [%s] has been configured with @ContextConfiguration's 'locations' " + "(or 'value') attribute %s, but %s does not support resource locations.", mergedConfig.getTestClass().getName(), ObjectUtils.nullSafeToString(mergedConfig.getLocations()), getClass().getSimpleName()); logger.error(msg); throw new IllegalStateException(msg); } } /** * Register classes in the supplied {@link GenericApplicationContext context} * from the classes in the supplied {@link MergedContextConfiguration}. * <p>Each class must represent an <em>annotated class</em>. An * {@link AnnotatedBeanDefinitionReader} is used to register the appropriate * bean definitions. * <p>Note that this method does not call {@link #createBeanDefinitionReader} * since {@code AnnotatedBeanDefinitionReader} is not an instance of * {@link BeanDefinitionReader}. * @param context the context in which the annotated classes should be registered * @param mergedConfig the merged configuration from which the classes should be retrieved * @see AbstractGenericContextLoader#loadBeanDefinitions */ @Override protected void loadBeanDefinitions(GenericApplicationContext context, MergedContextConfiguration mergedConfig) { Class<?>[] annotatedClasses = mergedConfig.getClasses(); if (logger.isDebugEnabled()) { logger.debug("Registering annotated classes: " + ObjectUtils.nullSafeToString(annotatedClasses)); } new AnnotatedBeanDefinitionReader(context).register(annotatedClasses); } /** * {@code AnnotationConfigContextLoader} should be used as a * {@link org.springframework.test.context.SmartContextLoader SmartContextLoader}, * not as a legacy {@link org.springframework.test.context.ContextLoader ContextLoader}. * Consequently, this method is not supported. * @throws UnsupportedOperationException in this implementation * @see #loadBeanDefinitions * @see AbstractGenericContextLoader#createBeanDefinitionReader */ @Override protected BeanDefinitionReader createBeanDefinitionReader(GenericApplicationContext context) { throw new UnsupportedOperationException( "AnnotationConfigContextLoader does not support the createBeanDefinitionReader(GenericApplicationContext) method"); } }