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| 1 | +/* |
| 2 | + * Copyright 2002-2016 the original author or authors. |
| 3 | + * |
| 4 | + * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | + * you may not use this file except in compliance with the License. |
| 6 | + * You may obtain a copy of the License at |
| 7 | + * |
| 8 | + * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | + * |
| 10 | + * Unless required by applicable law or agreed to in writing, software |
| 11 | + * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | + * See the License for the specific language governing permissions and |
| 14 | + * limitations under the License. |
| 15 | + */ |
| 16 | + |
| 17 | +package org.springframework.test.context.junit4.aci.annotation; |
| 18 | + |
| 19 | +import java.lang.annotation.ElementType; |
| 20 | +import java.lang.annotation.Retention; |
| 21 | +import java.lang.annotation.RetentionPolicy; |
| 22 | +import java.lang.annotation.Target; |
| 23 | +import java.util.List; |
| 24 | + |
| 25 | +import org.junit.Test; |
| 26 | +import org.junit.runner.RunWith; |
| 27 | +import org.springframework.beans.factory.annotation.Autowired; |
| 28 | +import org.springframework.context.ApplicationContextInitializer; |
| 29 | +import org.springframework.context.annotation.AnnotatedBeanDefinitionReader; |
| 30 | +import org.springframework.context.support.GenericApplicationContext; |
| 31 | +import org.springframework.core.annotation.AliasFor; |
| 32 | +import org.springframework.test.context.ContextConfiguration; |
| 33 | +import org.springframework.test.context.junit4.SpringRunner; |
| 34 | +import org.springframework.test.context.junit4.aci.annotation.InitializerConfiguredViaMetaAnnotationTests.ComposedContextConfiguration; |
| 35 | +import org.springframework.test.context.support.AnnotationConfigContextLoader; |
| 36 | + |
| 37 | +import static org.junit.Assert.assertEquals; |
| 38 | + |
| 39 | +/** |
| 40 | + * Integration test that demonstrates how to register one or more {@code @Configuration} |
| 41 | + * classes via an {@link ApplicationContextInitializer} in a composed annotation so |
| 42 | + * that certain {@code @Configuration} classes are always registered whenever the composed |
| 43 | + * annotation is used, even if the composed annotation is used to declare additional |
| 44 | + * {@code @Configuration} classes. |
| 45 | + * |
| 46 | + * <p>This class has been implemented in response to the following Stack Overflow question: |
| 47 | + * <a href="http://stackoverflow.com/questions/35733344/can-contextconfiguration-in-a-custom-annotation-be-merged"> |
| 48 | + * Can {@code @ContextConfiguration} in a custom annotation be merged?</a> |
| 49 | + * |
| 50 | + * @author Sam Brannen |
| 51 | + * @since 4.3 |
| 52 | + */ |
| 53 | +@RunWith(SpringRunner.class) |
| 54 | +@ComposedContextConfiguration(BarConfig.class) |
| 55 | +public class InitializerConfiguredViaMetaAnnotationTests { |
| 56 | + |
| 57 | + @Autowired |
| 58 | + String foo; |
| 59 | + |
| 60 | + @Autowired |
| 61 | + String bar; |
| 62 | + |
| 63 | + @Autowired |
| 64 | + List<String> strings; |
| 65 | + |
| 66 | + |
| 67 | + @Test |
| 68 | + public void beansFromInitializerAndComposedAnnotation() { |
| 69 | + assertEquals(2, strings.size()); |
| 70 | + assertEquals("foo", foo); |
| 71 | + assertEquals("bar", bar); |
| 72 | + } |
| 73 | + |
| 74 | + |
| 75 | + static class FooConfigInitializer implements ApplicationContextInitializer<GenericApplicationContext> { |
| 76 | + |
| 77 | + @Override |
| 78 | + public void initialize(GenericApplicationContext applicationContext) { |
| 79 | + new AnnotatedBeanDefinitionReader(applicationContext).register(FooConfig.class); |
| 80 | + } |
| 81 | + } |
| 82 | + |
| 83 | + @ContextConfiguration(loader = AnnotationConfigContextLoader.class, initializers = FooConfigInitializer.class) |
| 84 | + @Retention(RetentionPolicy.RUNTIME) |
| 85 | + @Target(ElementType.TYPE) |
| 86 | + @interface ComposedContextConfiguration { |
| 87 | + |
| 88 | + @AliasFor(annotation = ContextConfiguration.class, attribute = "classes") |
| 89 | + Class<?>[] value() default {}; |
| 90 | + } |
| 91 | + |
| 92 | +} |
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