OrderUtils caches order values (for AnnotationAwareOrderComparator)

Issue: SPR-17064

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * 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.
@@ -23,41 +23,48 @@ import org.junit.Test;
 import static org.junit.Assert.*;
 
 /**
- *
  * @author Stephane Nicoll
+ * @author Juergen Hoeller
  */
 public class OrderUtilsTests {
 
 	@Test
 	public void getSimpleOrder() {
 		assertEquals(Integer.valueOf(50), OrderUtils.getOrder(SimpleOrder.class, null));
+		assertEquals(Integer.valueOf(50), OrderUtils.getOrder(SimpleOrder.class, null));
 	}
 
 	@Test
 	public void getPriorityOrder() {
 		assertEquals(Integer.valueOf(55), OrderUtils.getOrder(SimplePriority.class, null));
+		assertEquals(Integer.valueOf(55), OrderUtils.getOrder(SimplePriority.class, null));
 	}
 
 	@Test
 	public void getOrderWithBoth() {
 		assertEquals(Integer.valueOf(50), OrderUtils.getOrder(OrderAndPriority.class, null));
+		assertEquals(Integer.valueOf(50), OrderUtils.getOrder(OrderAndPriority.class, null));
 	}
 
 	@Test
 	public void getDefaultOrder() {
 		assertEquals(33, OrderUtils.getOrder(NoOrder.class, 33));
+		assertEquals(33, OrderUtils.getOrder(NoOrder.class, 33));
 	}
 
 	@Test
 	public void getPriorityValueNoAnnotation() {
 		assertNull(OrderUtils.getPriority(SimpleOrder.class));
+		assertNull(OrderUtils.getPriority(SimpleOrder.class));
 	}
 
 	@Test
 	public void getPriorityValue() {
 		assertEquals(Integer.valueOf(55), OrderUtils.getPriority(OrderAndPriority.class));
+		assertEquals(Integer.valueOf(55), OrderUtils.getPriority(OrderAndPriority.class));
 	}
 
+
 	@Order(50)
 	private static class SimpleOrder {}