SPR-6416, adding conversation manager test

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

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+/*
+ * 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.DefaultConversationManager;
+import org.springframework.conversation.manager.LocalTransientConversationRepository;
+import org.springframework.conversation.manager.ThreadLocalConversationResolver;
+
+import static org.junit.Assert.*;
+
+/**
+ * @author Micha Kiener
+ */
+public class ConversationManagerTest {
+
+	@Test
+	public void testNewConversationCreation() {
+		ConversationManager manager = createConversationManager();
+		assertNotNull("manager must not be null", manager);
+
+		Conversation conversation = manager.getCurrentConversation();
+		assertNotNull("implicit creation of a current conversation must not return null", conversation);
+
+		Conversation conversation2 = manager.getCurrentConversation();
+		assertSame("subsequent invocation of current conversation must return the same object", conversation,
+				conversation2);
+
+		conversation2 = manager.getCurrentConversation(false);
+		assertSame("subsequent invocation of current conversation must return the same object", conversation,
+				conversation2);
+
+		conversation2 = manager.getCurrentConversation(true);
+		assertSame("subsequent invocation of current conversation must return the same object", conversation,
+				conversation2);
+	}
+
+	@Test
+	public void testNewConversationCreationAndRemoval() {
+		ConversationManager manager = createConversationManager();
+		Conversation conversation = manager.getCurrentConversation();
+
+		manager.endCurrentConversation(true);
+		Conversation conversation2 = manager.getCurrentConversation();
+
+		assertNotSame("an ended conversation must not be reused", conversation, conversation2);
+		manager.endCurrentConversation(true);
+
+		conversation = manager.getCurrentConversation(false);
+		assertNull("Requesting the current conversation without implicit creation must not create one", conversation);
+	}
+
+	@Test
+	public void testNewNestedConversation() {
+		ConversationManager manager = createConversationManager();
+		Conversation conversation = manager.getCurrentConversation();
+
+		Conversation childConversation = manager.beginConversation(ConversationType.NESTED);
+		assertNotSame("child conversation must be different from its parent", conversation, childConversation);
+		assertSame("child conversation must be linked to its parent", conversation, childConversation.getParent());
+		assertSame("child conversation must be the current one", childConversation, manager.getCurrentConversation());
+		assertTrue("child conversation must be nested", childConversation.isNested());
+		assertFalse("child conversation must not be isolated", childConversation.isIsolated());
+	}
+
+	@Test
+	public void testNewIsolatedConversation() {
+		ConversationManager manager = createConversationManager();
+		Conversation conversation = manager.getCurrentConversation();
+
+		Conversation childConversation = manager.beginConversation(ConversationType.ISOLATED);
+		assertNotSame("child conversation must be different from its parent", conversation, childConversation);
+		assertSame("child conversation must be linked to its parent", conversation, childConversation.getParent());
+		assertSame("child conversation must be the current one", childConversation, manager.getCurrentConversation());
+		assertTrue("child conversation must be nested", childConversation.isNested());
+		assertTrue("child conversation must be isolated", childConversation.isIsolated());
+	}
+
+	@Test
+	public void testAndEndNewNestedConversation() {
+		ConversationManager manager = createConversationManager();
+		Conversation conversation = manager.getCurrentConversation();
+
+		Conversation childConversation = manager.beginConversation(ConversationType.NESTED);
+		assertSame("child conversation must be the current one", childConversation, manager.getCurrentConversation());
+
+		manager.endCurrentConversation(false);
+		assertSame("after ending a child conversation, its parent has to be the current one", conversation,
+				manager.getCurrentConversation());
+	}
+
+	@Test
+	public void testAndRootEndNewNestedConversation() {
+		ConversationManager manager = createConversationManager();
+		Conversation conversation = manager.getCurrentConversation();
+
+		Conversation childConversation = manager.beginConversation(ConversationType.NESTED);
+		assertSame("child conversation must be the current one", childConversation, manager.getCurrentConversation());
+
+		manager.endCurrentConversation(true);
+		assertNull("ending a conversation with root mode, will end in having no current conversation",
+				manager.getCurrentConversation(false));
+	}
+
+	@Test
+	public void testImplicitEnding() {
+		ConversationManager manager = createConversationManager();
+		Conversation conversation = manager.getCurrentConversation();
+
+		Conversation newConversation = manager.beginConversation(ConversationType.NEW);
+		assertSame("new conversation must be the current one", newConversation, manager.getCurrentConversation());
+
+		manager.endCurrentConversation(true);
+		assertNull("implicit ending must not reactivate previous conversation", manager.getCurrentConversation(false));
+	}
+
+	protected ConversationManager createConversationManager() {
+		DefaultConversationManager manager = new DefaultConversationManager();
+		LocalTransientConversationRepository repository = new LocalTransientConversationRepository();
+		ThreadLocalConversationResolver resolver = new ThreadLocalConversationResolver();
+
+		manager.setConversationRepository(repository);
+		manager.setConversationResolver(resolver);
+				
+		return manager;
+	}
+}