SPR-6416, adding basic conversation object tests, improving the access time of the conversation object

org.springframework.context/src/main/java/org/springframework/conversation/manager/DefaultConversation.java

@@ -118,6 +118,7 @@ public class DefaultConversation implements MutableConversation, Serializable {
 
 	public void clear() {
 		attributes.clear();
+		touch();
 	}
 
     public void setId(String id) {
@@ -157,6 +158,8 @@ public class DefaultConversation implements MutableConversation, Serializable {
 
     public void addChildConversation(MutableConversation conversation, boolean isIsolated) {
 		checkValidity();
+		touch();
+
 		if (conversation instanceof DefaultConversation) {
 			// set this conversation as the parent within the given child conversation
 			((DefaultConversation)conversation).setParentConversation(this, isIsolated);
@@ -170,6 +173,7 @@ public class DefaultConversation implements MutableConversation, Serializable {
 	}
 
     public void removeChildConversation(MutableConversation conversation) {
+		touch();
         if (children != null) {
             children.remove(conversation);
 			if (children.size() == 0) {

org.springframework.context/src/test/java/org/springframework/conversation/DefaultConversationTest.java

@@ -0,0 +1,99 @@
+/*
+ * Copyright 2002-2011 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.conversation;
+
+import org.junit.Test;
+
+import org.springframework.conversation.manager.DefaultConversation;
+import org.springframework.conversation.manager.MutableConversation;
+
+import static org.junit.Assert.*;
+
+/**
+ * @author Micha Kiener
+ */
+public class DefaultConversationTest {
+
+	@Test
+	public void	testConversationAttribute() {
+		Conversation conversation = new DefaultConversation();
+
+		String test = new String("Test");
+		conversation.setAttribute("test", test);
+
+		assertSame("attribute must be accessible through conversation object", test, conversation.getAttribute("test"));
+	}
+
+	@Test
+	public void	testConversationAttributeInheritance() {
+		MutableConversation conversation = new DefaultConversation();
+
+		String test = new String("Test");
+		conversation.setAttribute("test", test);
+
+		MutableConversation childConversation = new DefaultConversation();
+		conversation.addChildConversation(childConversation, false);
+
+		assertSame("attribute must be accessible through child conversation object", test,
+				childConversation.getAttribute("test"));
+	}
+
+	@Test
+	public void	testConversationAttributeIsolation() {
+		MutableConversation conversation = new DefaultConversation();
+
+		String test = new String("Test");
+		conversation.setAttribute("test", test);
+
+		MutableConversation childConversation = new DefaultConversation();
+		conversation.addChildConversation(childConversation, true);
+
+		assertNull("attribute must not be accessible from within an isolated conversation",
+				childConversation.getAttribute("test"));
+	}
+
+	@Test
+	public void	testNewConversationAttributeIsolation() {
+		MutableConversation conversation = new DefaultConversation();
+
+		String test = new String("Test");
+		conversation.setAttribute("test", test);
+
+		MutableConversation childConversation = new DefaultConversation();
+		conversation.addChildConversation(childConversation, true);
+
+		String test2 = new String("Test2");
+		childConversation.setAttribute("test2", test2);
+
+		assertNull("newly added attribute on isolated conversation must not be accessible within its parent",
+				conversation.getAttribute("test2"));
+	}
+
+	@Test
+	public void	testConversationAttributeRemoval() {
+		Conversation conversation = new DefaultConversation();
+
+		String test = new String("Test");
+		conversation.setAttribute("test", test);
+
+		String test2 = (String)conversation.removeAttribute("test");
+		assertNotNull("removed attribute must be returned", test2);
+		assertSame("removed attribute must be the same as being added", test, test2);
+
+		assertNull("removed attribute must not be accessible after removal", conversation.getAttribute("test"));
+	}
+}