fixed getBean signature ambiguity in tests

org.springframework.context/src/test/java/org/springframework/beans/factory/AbstractBeanFactoryTests.java

@@ -55,7 +55,7 @@ public abstract class AbstractBeanFactoryTests extends TestCase {
 
 	public void testGetBeanWithNullArg() {
 		try {
-			getBeanFactory().getBean(null);
+			getBeanFactory().getBean((String) null);
 			fail("Can't get null bean");
 		}
 		catch (IllegalArgumentException ex) {

org.springframework.web.portlet/src/test/java/org/springframework/beans/factory/AbstractBeanFactoryTests.java

@@ -55,7 +55,7 @@ public abstract class AbstractBeanFactoryTests extends TestCase {
 
 	public void testGetBeanWithNullArg() {
 		try {
-			getBeanFactory().getBean(null);
+			getBeanFactory().getBean((String) null);
 			fail("Can't get null bean");
 		}
 		catch (IllegalArgumentException ex) {

org.springframework.web.servlet/src/test/java/org/springframework/web/context/AbstractBeanFactoryTests.java

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2002-2009 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.web.context;
 
 import java.beans.PropertyEditorSupport;
@@ -47,7 +63,7 @@ public abstract class AbstractBeanFactoryTests extends TestCase {
 
 	public void testGetBeanWithNullArg() {
 		try {
-			getBeanFactory().getBean(null);
+			getBeanFactory().getBean((String) null);
 			fail("Can't get null bean");
 		}
 		catch (IllegalArgumentException ex) {