Verify status quo when searching for non-inherited composed annotations

Issue: SPR-11475

spring-core/src/test/java/org/springframework/core/annotation/AnnotatedElementUtilsTests.java

@@ -0,0 +1,104 @@
+/*
+ * 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.core.annotation;
+
+import java.lang.annotation.Inherited;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Unit tests for {@link AnnotatedElementUtils}.
+ *
+ * @author Sam Brannen
+ * @since 4.0.3
+ */
+public class AnnotatedElementUtilsTests {
+
+	@Test
+	public void getAnnotationAttributesFavorsInheritedAnnotationsOverMoreLocallyDeclaredComposedAnnotations() {
+		AnnotationAttributes attributes = AnnotatedElementUtils.getAnnotationAttributes(
+			SubSubClassWithInheritedAnnotation.class, Transactional.class.getName());
+		assertNotNull(attributes);
+
+		// By inspecting SubSubClassWithInheritedAnnotation, one might expect that the
+		// readOnly flag should be true, since the immediate superclass is annotated with
+		// @Composed2; however, with the current implementation the readOnly flag will be
+		// false since @Transactional is declared as @Inherited.
+		assertFalse("readOnly flag for SubSubClassWithInheritedAnnotation", attributes.getBoolean("readOnly"));
+	}
+
+	@Test
+	public void getAnnotationAttributesFavorsInheritedComposedAnnotationsOverMoreLocallyDeclaredComposedAnnotations() {
+		AnnotationAttributes attributes = AnnotatedElementUtils.getAnnotationAttributes(
+			SubSubClassWithInheritedComposedAnnotation.class, Transactional.class.getName());
+		assertNotNull(attributes);
+
+		// By inspecting SubSubClassWithInheritedComposedAnnotation, one might expect that
+		// the readOnly flag should be true, since the immediate superclass is annotated
+		// with @Composed2; however, with the current implementation the readOnly flag
+		// will be false since @Composed1 is declared as @Inherited.
+		assertFalse("readOnly flag", attributes.getBoolean("readOnly"));
+	}
+
+
+	// -------------------------------------------------------------------------
+
+	@Retention(RetentionPolicy.RUNTIME)
+	@Inherited
+	@interface Transactional {
+
+		boolean readOnly() default false;
+	}
+
+	@Transactional
+	@Retention(RetentionPolicy.RUNTIME)
+	@Inherited
+	@interface Composed1 {
+	}
+
+	@Transactional(readOnly = true)
+	@Retention(RetentionPolicy.RUNTIME)
+	@interface Composed2 {
+	}
+
+	@Transactional
+	static class ClassWithInheritedAnnotation {
+	}
+
+	@Composed2
+	static class SubClassWithInheritedAnnotation extends ClassWithInheritedAnnotation {
+	}
+
+	static class SubSubClassWithInheritedAnnotation extends SubClassWithInheritedAnnotation {
+	}
+
+	@Composed1
+	static class ClassWithInheritedComposedAnnotation {
+	}
+
+	@Composed2
+	static class SubClassWithInheritedComposedAnnotation extends ClassWithInheritedComposedAnnotation {
+	}
+
+	static class SubSubClassWithInheritedComposedAnnotation extends SubClassWithInheritedComposedAnnotation {
+	}
+
+}

spring-core/src/test/java/org/springframework/core/annotation/AnnotationUtilsTests.java

@@ -100,14 +100,40 @@ public class AnnotationUtilsTests {
 	// }
 
 	@Test
-	public void findAnnotationPrefersInterfacesOverLocalMetaAnnotations() {
+	public void findAnnotationFavorsInterfacesOverLocalMetaAnnotations() {
 		Component component = AnnotationUtils.findAnnotation(
-				ClassWithLocalMetaAnnotationAndMetaAnnotatedInterface.class, Component.class);
+			ClassWithLocalMetaAnnotationAndMetaAnnotatedInterface.class, Component.class);
+		assertNotNull(component);
 
 		// By inspecting ClassWithLocalMetaAnnotationAndMetaAnnotatedInterface, one
 		// might expect that "meta2" should be found; however, with the current
 		// implementation "meta1" will be found.
+		assertEquals("meta1", component.value());
+	}
+
+	@Test
+	public void findAnnotationFavorsInheritedAnnotationsOverMoreLocallyDeclaredComposedAnnotations() {
+		Transactional transactional = AnnotationUtils.findAnnotation(SubSubClassWithInheritedAnnotation.class,
+			Transactional.class);
+		assertNotNull(transactional);
+
+		// By inspecting SubSubClassWithInheritedAnnotation, one might expect that the
+		// readOnly flag should be true, since the immediate superclass is annotated with
+		// @Composed2; however, with the current implementation the readOnly flag will be
+		// false since @Transactional is declared as @Inherited.
+		assertFalse("readOnly flag for SubSubClassWithInheritedAnnotation", transactional.readOnly());
+	}
+
+	@Test
+	public void findAnnotationFavorsInheritedComposedAnnotationsOverMoreLocallyDeclaredComposedAnnotations() {
+		Component component = AnnotationUtils.findAnnotation(SubSubClassWithInheritedMetaAnnotation.class,
+			Component.class);
 		assertNotNull(component);
+
+		// By inspecting SubSubClassWithInheritedMetaAnnotation, one might expect that
+		// "meta2" should be found, since the immediate superclass is annotated with
+		// @Meta2; however, with the current implementation "meta1" will be found since
+		// @Meta1 is declared as @Inherited.
 		assertEquals("meta1", component.value());
 	}
 
@@ -350,14 +376,15 @@ public class AnnotationUtilsTests {
 	}
 
 
-	@Component(value="meta1")
+	@Component(value = "meta1")
 	@Order
 	@Retention(RetentionPolicy.RUNTIME)
+	@Inherited
 	@interface Meta1 {
 	}
 
-	@Component(value="meta2")
-	@Transactional
+	@Component(value = "meta2")
+	@Transactional(readOnly = true)
 	@Retention(RetentionPolicy.RUNTIME)
 	@interface Meta2 {
 	}
@@ -395,6 +422,28 @@ public class AnnotationUtilsTests {
 	static class ClassWithLocalMetaAnnotationAndMetaAnnotatedInterface implements InterfaceWithMetaAnnotation {
 	}
 
+	@Meta1
+	static class ClassWithInheritedMetaAnnotation {
+	}
+
+	@Meta2
+	static class SubClassWithInheritedMetaAnnotation extends ClassWithInheritedMetaAnnotation {
+	}
+
+	static class SubSubClassWithInheritedMetaAnnotation extends SubClassWithInheritedMetaAnnotation {
+	}
+
+	@Transactional
+	static class ClassWithInheritedAnnotation {
+	}
+
+	@Meta2
+	static class SubClassWithInheritedAnnotation extends ClassWithInheritedAnnotation {
+	}
+
+	static class SubSubClassWithInheritedAnnotation extends SubClassWithInheritedAnnotation {
+	}
+
 	@MetaMeta
 	static class MetaMetaAnnotatedClass {
 	}
@@ -453,6 +502,8 @@ public class AnnotationUtilsTests {
 	@Retention(RetentionPolicy.RUNTIME)
 	@Inherited
 	@interface Transactional {
+
+		boolean readOnly() default false;
 	}
 
 	public static abstract class Foo<T> {