Avoid collection lookups in StompCommand

Issue: SPR-14636

spring-messaging/src/test/java/org/springframework/messaging/simp/stomp/StompCommandTests.java

@@ -0,0 +1,100 @@
+/*
+ * Copyright 2002-2016 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.messaging.simp.stomp;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.EnumMap;
+import java.util.Map;
+
+import org.junit.Test;
+
+import org.springframework.messaging.simp.SimpMessageType;
+
+import static org.junit.Assert.*;
+
+/**
+ * @author Juergen Hoeller
+ */
+public class StompCommandTests {
+
+	private static final Collection<StompCommand> destinationRequired =
+			Arrays.asList(StompCommand.SEND, StompCommand.SUBSCRIBE, StompCommand.MESSAGE);
+
+	private static final Collection<StompCommand> subscriptionIdRequired =
+			Arrays.asList(StompCommand.SUBSCRIBE, StompCommand.UNSUBSCRIBE, StompCommand.MESSAGE);
+
+	private static final Collection<StompCommand> contentLengthRequired =
+			Arrays.asList(StompCommand.SEND, StompCommand.MESSAGE, StompCommand.ERROR);
+
+	private static final Collection<StompCommand> bodyAllowed =
+			Arrays.asList(StompCommand.SEND, StompCommand.MESSAGE, StompCommand.ERROR);
+
+	private static final Map<StompCommand, SimpMessageType> messageTypes =
+			new EnumMap<>(StompCommand.class);
+
+	static {
+		messageTypes.put(StompCommand.STOMP, SimpMessageType.CONNECT);
+		messageTypes.put(StompCommand.CONNECT, SimpMessageType.CONNECT);
+		messageTypes.put(StompCommand.DISCONNECT, SimpMessageType.DISCONNECT);
+		messageTypes.put(StompCommand.SUBSCRIBE, SimpMessageType.SUBSCRIBE);
+		messageTypes.put(StompCommand.UNSUBSCRIBE, SimpMessageType.UNSUBSCRIBE);
+		messageTypes.put(StompCommand.SEND, SimpMessageType.MESSAGE);
+		messageTypes.put(StompCommand.MESSAGE, SimpMessageType.MESSAGE);
+	}
+
+
+	@Test
+	public void getMessageType() throws Exception {
+		for (StompCommand stompCommand : StompCommand.values()) {
+			SimpMessageType simp = messageTypes.get(stompCommand);
+			if (simp == null) {
+				simp = SimpMessageType.OTHER;
+			}
+			assertSame(simp, stompCommand.getMessageType());
+		}
+	}
+
+	@Test
+	public void requiresDestination() throws Exception {
+		for (StompCommand stompCommand : StompCommand.values()) {
+			assertEquals(destinationRequired.contains(stompCommand), stompCommand.requiresDestination());
+		}
+	}
+
+	@Test
+	public void requiresSubscriptionId() throws Exception {
+		for (StompCommand stompCommand : StompCommand.values()) {
+			assertEquals(subscriptionIdRequired.contains(stompCommand), stompCommand.requiresSubscriptionId());
+		}
+	}
+
+	@Test
+	public void requiresContentLength() throws Exception {
+		for (StompCommand stompCommand : StompCommand.values()) {
+			assertEquals(contentLengthRequired.contains(stompCommand), stompCommand.requiresContentLength());
+		}
+	}
+
+	@Test
+	public void isBodyAllowed() throws Exception {
+		for (StompCommand stompCommand : StompCommand.values()) {
+			assertEquals(bodyAllowed.contains(stompCommand), stompCommand.isBodyAllowed());
+		}
+	}
+
+}