/*
* 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.io.UnsupportedEncodingException;
import java.nio.ByteBuffer;
import java.util.List;
import org.junit.Test;
import org.springframework.messaging.Message;
import org.springframework.messaging.simp.SimpMessageType;
import org.springframework.util.InvalidMimeTypeException;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
/**
* Test fixture for {@link StompDecoder}.
*
* @author Andy Wilkinson
* @author Stephane Maldini
*/
public class StompDecoderTests {
private final StompDecoder decoder = new StompDecoder();
@Test
public void decodeFrameWithCrLfEols() {
Message<byte[]> frame = decode("DISCONNECT\r\n\r\n\0");
StompHeaderAccessor headers = StompHeaderAccessor.wrap(frame);
assertEquals(StompCommand.DISCONNECT, headers.getCommand());
assertEquals(0, headers.toNativeHeaderMap().size());
assertEquals(0, frame.getPayload().length);
}
@Test
public void decodeFrameWithNoHeadersAndNoBody() {
Message<byte[]> frame = decode("DISCONNECT\n\n\0");
StompHeaderAccessor headers = StompHeaderAccessor.wrap(frame);
assertEquals(StompCommand.DISCONNECT, headers.getCommand());
assertEquals(0, headers.toNativeHeaderMap().size());
assertEquals(0, frame.getPayload().length);
}
@Test
public void decodeFrameWithNoBody() {
String accept = "accept-version:1.1\n";
String host = "host:github.org\n";
Message<byte[]> frame = decode("CONNECT\n" + accept + host + "\n\0");
StompHeaderAccessor headers = StompHeaderAccessor.wrap(frame);
assertEquals(StompCommand.CONNECT, headers.getCommand());
assertEquals(2, headers.toNativeHeaderMap().size());
assertEquals("1.1", headers.getFirstNativeHeader("accept-version"));
assertEquals("github.org", headers.getHost());
assertEquals(0, frame.getPayload().length);
}
@Test
public void decodeFrame() throws UnsupportedEncodingException {
Message<byte[]> frame = decode("SEND\ndestination:test\n\nThe body of the message\0");
StompHeaderAccessor headers = StompHeaderAccessor.wrap(frame);
assertEquals(StompCommand.SEND, headers.getCommand());
assertEquals(headers.toNativeHeaderMap().toString(), 1, headers.toNativeHeaderMap().size());
assertEquals("test", headers.getDestination());
String bodyText = new String(frame.getPayload());
assertEquals("The body of the message", bodyText);
}
@Test
public void decodeFrameWithContentLength() {
Message<byte[]> message = decode("SEND\ncontent-length:23\n\nThe body of the message\0");
StompHeaderAccessor headers = StompHeaderAccessor.wrap(message);
assertEquals(StompCommand.SEND, headers.getCommand());
assertEquals(1, headers.toNativeHeaderMap().size());
assertEquals(Integer.valueOf(23), headers.getContentLength());
String bodyText = new String(message.getPayload());
assertEquals("The body of the message", bodyText);
}
// SPR-11528
@Test
public void decodeFrameWithInvalidContentLength() {
Message<byte[]> message = decode("SEND\ncontent-length:-1\n\nThe body of the message\0");
StompHeaderAccessor headers = StompHeaderAccessor.wrap(message);
assertEquals(StompCommand.SEND, headers.getCommand());
assertEquals(1, headers.toNativeHeaderMap().size());
assertEquals(Integer.valueOf(-1), headers.getContentLength());
String bodyText = new String(message.getPayload());
assertEquals("The body of the message", bodyText);
}
@Test
public void decodeFrameWithContentLengthZero() {
Message<byte[]> frame = decode("SEND\ncontent-length:0\n\n\0");
StompHeaderAccessor headers = StompHeaderAccessor.wrap(frame);
assertEquals(StompCommand.SEND, headers.getCommand());
assertEquals(1, headers.toNativeHeaderMap().size());
assertEquals(Integer.valueOf(0), headers.getContentLength());
String bodyText = new String(frame.getPayload());
assertEquals("", bodyText);
}
@Test
public void decodeFrameWithNullOctectsInTheBody() {
Message<byte[]> frame = decode("SEND\ncontent-length:23\n\nThe b\0dy \0f the message\0");
StompHeaderAccessor headers = StompHeaderAccessor.wrap(frame);
assertEquals(StompCommand.SEND, headers.getCommand());
assertEquals(1, headers.toNativeHeaderMap().size());
assertEquals(Integer.valueOf(23), headers.getContentLength());
String bodyText = new String(frame.getPayload());
assertEquals("The b\0dy \0f the message", bodyText);
}
@Test
public void decodeFrameWithEscapedHeaders() {
Message<byte[]> frame = decode("DISCONNECT\na\\c\\r\\n\\\\b:alpha\\cbravo\\r\\n\\\\\n\n\0");
StompHeaderAccessor headers = StompHeaderAccessor.wrap(frame);
assertEquals(StompCommand.DISCONNECT, headers.getCommand());
assertEquals(1, headers.toNativeHeaderMap().size());
assertEquals("alpha:bravo\r\n\\", headers.getFirstNativeHeader("a:\r\n\\b"));
}
@Test(expected = StompConversionException.class)
public void decodeFrameBodyNotAllowed() {
decode("CONNECT\naccept-version:1.2\n\nThe body of the message\0");
}
@Test
public void decodeMultipleFramesFromSameBuffer() {
String frame1 = "SEND\ndestination:test\n\nThe body of the message\0";
String frame2 = "DISCONNECT\n\n\0";
ByteBuffer buffer = ByteBuffer.wrap((frame1 + frame2).getBytes());
final List<Message<byte[]>> messages = decoder.decode(buffer);
assertEquals(2, messages.size());
assertEquals(StompCommand.SEND, StompHeaderAccessor.wrap(messages.get(0)).getCommand());
assertEquals(StompCommand.DISCONNECT, StompHeaderAccessor.wrap(messages.get(1)).getCommand());
}
// SPR-13111
@Test
public void decodeFrameWithHeaderWithEmptyValue() {
String accept = "accept-version:1.1\n";
String valuelessKey = "key:\n";
Message<byte[]> frame = decode("CONNECT\n" + accept + valuelessKey + "\n\0");
StompHeaderAccessor headers = StompHeaderAccessor.wrap(frame);
assertEquals(StompCommand.CONNECT, headers.getCommand());
assertEquals(2, headers.toNativeHeaderMap().size());
assertEquals("1.1", headers.getFirstNativeHeader("accept-version"));
assertEquals("", headers.getFirstNativeHeader("key"));
assertEquals(0, frame.getPayload().length);
}
@Test
public void decodeFrameWithIncompleteCommand() {
assertIncompleteDecode("MESSAG");
}
@Test
public void decodeFrameWithIncompleteHeader() {
assertIncompleteDecode("SEND\ndestination");
assertIncompleteDecode("SEND\ndestination:");
assertIncompleteDecode("SEND\ndestination:test");
}
@Test
public void decodeFrameWithoutNullOctetTerminator() {
assertIncompleteDecode("SEND\ndestination:test\n");
assertIncompleteDecode("SEND\ndestination:test\n\n");
assertIncompleteDecode("SEND\ndestination:test\n\nThe body");
}
@Test
public void decodeFrameWithInsufficientContent() {
assertIncompleteDecode("SEND\ncontent-length:23\n\nThe body of the mess");
}
@Test
public void decodeFrameWithIncompleteContentType() {
assertIncompleteDecode("SEND\ncontent-type:text/plain;charset=U");
}
@Test(expected = InvalidMimeTypeException.class)
public void decodeFrameWithInvalidContentType() {
assertIncompleteDecode("SEND\ncontent-type:text/plain;charset=U\n\nThe body\0");
}
@Test(expected = StompConversionException.class)
public void decodeFrameWithIncorrectTerminator() {
decode("SEND\ncontent-length:23\n\nThe body of the message*");
}
@Test
public void decodeHeartbeat() {
String frame = "\n";
ByteBuffer buffer = ByteBuffer.wrap(frame.getBytes());
final List<Message<byte[]>> messages = decoder.decode(buffer);
assertEquals(1, messages.size());
assertEquals(SimpMessageType.HEARTBEAT, StompHeaderAccessor.wrap(messages.get(0)).getMessageType());
}
private void assertIncompleteDecode(String partialFrame) {
ByteBuffer buffer = ByteBuffer.wrap(partialFrame.getBytes());
assertNull(decode(buffer));
assertEquals(0, buffer.position());
}
private Message<byte[]> decode(String stompFrame) {
ByteBuffer buffer = ByteBuffer.wrap(stompFrame.getBytes());
return decode(buffer);
}
private Message<byte[]> decode(ByteBuffer buffer) {
List<Message<byte[]>> messages = this.decoder.decode(buffer);
if (messages.isEmpty()) {
return null;
}
else {
return messages.get(0);
}
}
}