Protect against non-deterministic method order in JDK7

- Allow reset of GlobalAdvisorAdapterRegistry

   Provide a reset() method allowing the GlobalAdvisorAdapterRegistry
   instance to be replaced with a fresh instance. This method has
   primarily been added to allow unit tests to leave the registry
   in a known state.

 - Protect against the fact that calls to configuration class methods
   my occur in a random order.

Issue: SPR-9779

spring-aop/src/main/java/org/springframework/aop/framework/adapter/GlobalAdvisorAdapterRegistry.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2005 the original author or authors.
+ * Copyright 2002-2012 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.
@@ -21,6 +21,7 @@ package org.springframework.aop.framework.adapter;
  *
  * @author Rod Johnson
  * @author Juergen Hoeller
+ * @author Phillip Webb
  * @see DefaultAdvisorAdapterRegistry
  */
 public abstract class GlobalAdvisorAdapterRegistry {
@@ -28,13 +29,22 @@ public abstract class GlobalAdvisorAdapterRegistry {
 	/**
 	 * Keep track of a single instance so we can return it to classes that request it.
 	 */
-	private static final AdvisorAdapterRegistry instance = new DefaultAdvisorAdapterRegistry();
+	private static AdvisorAdapterRegistry instance = new DefaultAdvisorAdapterRegistry();
 
 	/**
-	 * Return the singleton DefaultAdvisorAdapterRegistry instance.
+	 * Return the singleton {@link DefaultAdvisorAdapterRegistry} instance.
 	 */
 	public static AdvisorAdapterRegistry getInstance() {
 		return instance;
 	}
 
+	/**
+	 * Reset the singleton {@link DefaultAdvisorAdapterRegistry}, removing any
+	 * {@link AdvisorAdapterRegistry#registerAdvisorAdapter(AdvisorAdapter) registered}
+	 * adapters.
+	 */
+	static void reset() {
+		instance = new DefaultAdvisorAdapterRegistry();
+	}
+
 }

spring-context/src/test/java/org/springframework/aop/framework/adapter/AdvisorAdapterRegistrationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2005 the original author or authors.
+ * Copyright 2002-2012 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.
@@ -23,6 +23,8 @@ import java.io.Serializable;
 import org.aopalliance.aop.Advice;
 import org.aopalliance.intercept.MethodInterceptor;
 import org.aopalliance.intercept.MethodInvocation;
+import org.junit.After;
+import org.junit.Before;
 import org.junit.Test;
 import org.springframework.aop.Advisor;
 import org.springframework.aop.BeforeAdvice;
@@ -38,6 +40,12 @@ import org.springframework.context.support.ClassPathXmlApplicationContext;
  */
 public final class AdvisorAdapterRegistrationTests {
 
+	@Before
+	@After
+	public void resetGlobalAdvisorAdapterRegistry() {
+		GlobalAdvisorAdapterRegistry.reset();
+	}
+
 	@Test
 	public void testAdvisorAdapterRegistrationManagerNotPresentInContext() {
 		ClassPathXmlApplicationContext ctx =
@@ -127,5 +135,4 @@ final class SimpleBeforeAdviceInterceptor implements MethodInterceptor {
 		advice.before();
 		return mi.proceed();
 	}
-	
 }

spring-test/src/test/java/org/springframework/test/context/junit4/spr9051/AnnotatedConfigClassesWithoutAtConfigurationTests.java

@@ -16,11 +16,13 @@
 
 package org.springframework.test.context.junit4.spr9051;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertTrue;
+import static org.hamcrest.Matchers.*;
+import static org.hamcrest.Matchers.is;
+import static org.junit.Assert.*;
 
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import org.junit.Test;
@@ -30,6 +32,7 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.test.context.ContextConfiguration;
 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 
+
 /**
  * This set of tests refutes the claims made in
  * <a href="https://jira.springsource.org/browse/SPR-9051" target="_blank">SPR-9051</a>.
@@ -46,6 +49,7 @@ import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
  * </blockquote>
  *
  * @author Sam Brannen
+ * @author Phillip Webb
  * @since 3.2
  */
 @RunWith(SpringJUnit4ClassRunner.class)
@@ -85,18 +89,14 @@ public class AnnotatedConfigClassesWithoutAtConfigurationTests {
 	@Autowired
 	private LifecycleBean lifecycleBean;
 
-
 	@Test
-	public void simpleStringBean() {
+	public void testSPR_9051() throws Exception {
 		assertNotNull(enigma);
-		assertEquals("enigma #1", enigma);
-	}
-
-	@Test
-	public void beanWithLifecycleCallback() {
 		assertNotNull(lifecycleBean);
-		assertEquals("enigma #2", lifecycleBean.getName());
 		assertTrue(lifecycleBean.isInitialized());
+		Set<String> names = new HashSet<String>();
+		names.add(enigma.toString());
+		names.add(lifecycleBean.getName());
+		assertEquals(names, new HashSet<String>(Arrays.asList("enigma #1", "enigma #2")));
 	}
-
 }