Java 如何正确模拟WebSocket会话?
我使用springBoot创建了一个简单的websocket应用程序。我是Mockito的新手,我正在尝试用Mockito和junit对下面的类进行单元测试Java 如何正确模拟WebSocket会话?,java,unit-testing,spring-boot,junit,mockito,Java,Unit Testing,Spring Boot,Junit,Mockito,我使用springBoot创建了一个简单的websocket应用程序。我是Mockito的新手,我正在尝试用Mockito和junit对下面的类进行单元测试 @Component public class TextHandler extends TextWebSocketHandler { WebSocketSession session; @Override public void handleTextMessage(WebSocketSession session, TextMessag
@Component
public class TextHandler extends TextWebSocketHandler {
WebSocketSession session;
@Override
public void handleTextMessage(WebSocketSession session, TextMessage message)
throws InterruptedException, IOException {
// send message
if (session.isOpen()) {
try {
session.sendMessage(new TextMessage("Hello from the websocket"));
} finally {
session.close();
}
} else {
System.out.println("no open session available");
}
}
我为测试包下的会话创建了一个存根,如下所示
@Component
public class WebSocketSessionStub implements WebSocketSession{
@Override
public String getId() {
return "SESSION1";
}
@Override
public URI getUri() {
// TODO Auto-generated method stub
return null;
}
@Override
public HttpHeaders getHandshakeHeaders() {
// TODO Auto-generated method stub
return null;
}
@Override
public Map<String, Object> getAttributes() {
// TODO Auto-generated method stub
return null;
}
@Override
public Principal getPrincipal() {
// TODO Auto-generated method stub
return null;
}
@Override
public InetSocketAddress getLocalAddress() {
// TODO Auto-generated method stub
return null;
}
@Override
public InetSocketAddress getRemoteAddress() {
// TODO Auto-generated method stub
return null;
}
@Override
public String getAcceptedProtocol() {
// TODO Auto-generated method stub
return null;
}
@Override
public void setTextMessageSizeLimit(int messageSizeLimit) {
// TODO Auto-generated method stub
}
@Override
public int getTextMessageSizeLimit() {
// TODO Auto-generated method stub
return 0;
}
@Override
public void setBinaryMessageSizeLimit(int messageSizeLimit) {
// TODO Auto-generated method stub
}
@Override
public int getBinaryMessageSizeLimit() {
// TODO Auto-generated method stub
return 0;
}
@Override
public List<WebSocketExtension> getExtensions() {
// TODO Auto-generated method stub
return null;
}
@Override
public void sendMessage(WebSocketMessage<?> message) throws IOException {
// TODO Auto-generated method stub
}
@Override
public boolean isOpen() {
System.out.println("isOpen");
return true;
}
@Override
public void close() throws IOException {
// TODO Auto-generated method stub
}
@Override
public void close(CloseStatus status) throws IOException {
// TODO Auto-generated method stub
}
}
@组件
公共类WebSocketSessionStub实现WebSocketSession{
@凌驾
公共字符串getId(){
返回“会话1”;
}
@凌驾
公共URI getUri(){
//TODO自动生成的方法存根
返回null;
}
@凌驾
公共HttpHeaders getHandshakeHeaders(){
//TODO自动生成的方法存根
返回null;
}
@凌驾
公共映射getAttributes(){
//TODO自动生成的方法存根
返回null;
}
@凌驾
公共主体getPrincipal(){
//TODO自动生成的方法存根
返回null;
}
@凌驾
公共InetSocketAddress getLocalAddress(){
//TODO自动生成的方法存根
返回null;
}
@凌驾
公共InetSocketAddress getRemoteAddress(){
//TODO自动生成的方法存根
返回null;
}
@凌驾
公共字符串getAcceptedProtocol(){
//TODO自动生成的方法存根
返回null;
}
@凌驾
public void setTextMessageSizeLimit(int messageSizeLimit){
//TODO自动生成的方法存根
}
@凌驾
public int getTextMessageSizeLimit(){
//TODO自动生成的方法存根
返回0;
}
@凌驾
public void setBinaryMessageSizeLimit(int messageSizeLimit){
//TODO自动生成的方法存根
}
@凌驾
public int getBinaryMessageSizeLimit(){
//TODO自动生成的方法存根
返回0;
}
@凌驾
公共列表getExtensions(){
//TODO自动生成的方法存根
返回null;
}
@凌驾
public void sendMessage(WebSocketMessage消息)引发IOException{
//TODO自动生成的方法存根
}
@凌驾
公共布尔等参元(){
System.out.println(“isOpen”);
返回true;
}
@凌驾
public void close()引发IOException{
//TODO自动生成的方法存根
}
@凌驾
公共作废关闭(关闭状态)引发IOException{
//TODO自动生成的方法存根
}
}
下面是我的单元测试课
@RunWith(SpringRunner.class)
@SpringBootTest
public class TextHandlerTest {
@Autowired
TextHandler textHandler;
@Mock
WebSocketSessionStub ws;
@Mock
WebSocketMessage<TextMessage> webSocketMessage;
TextMessage textMsg = new TextMessage("Test Message".getBytes());
@Before
public void setUp() throws Exception {
MockitoAnnotations.initMocks(this);
textHandler.handleMessage(ws, textMsg);
}
@Test
public void verifyCallToIsOpenConnection() throws Exception {
verify(ws, times(1)).isOpen();
System.out.println("isOpen " + ws.isOpen());
}
}
@RunWith(SpringRunner.class)
@春靴测试
公共类TextHandlerTest{
@自动连线
文本处理程序文本处理程序;
@嘲弄
WebSocketSessionsTubWS;
@嘲弄
WebSocketMessage WebSocketMessage;
TextMessage textMsg=newtextmessage(“测试消息”.getBytes());
@以前
public void setUp()引发异常{
initMocks(this);
handleMessage(ws,textMsg);
}
@试验
public void verifyCallToIsOpenConnection()引发异常{
验证(ws,times(1)).isOpen();
System.out.println(“isOpen”+ws.isOpen());
}
}
上述测试通过,但
isOpen
计算结果为假。因此,我无法验证sendMessage
方法调用。如何更正它?您可以模拟WebSocketSession
并将其注入TextHandler\handleTextMessage
/*
* You don't need spring context while mocking.
* Hence No need to have spring runner.
*/
@RunWith(MockitoJunitRunner.class)
public class TextHandlerTest {
@Test
public void verifyCallToIsOpenConnection() {
WebSocketSession session = mock(WebSocketSession.class);
TextMessage textMsg = new TextMessage("Test Message".getBytes());
when(session.isOpen()).thenReturn(true);
TextHandler textHandler = new TextHandler();
// Pass the mocked session object here
textHandler. handleTextMessage(session, textMsg);
// Now you can verify if session.sendMessage() was called or not
verify(session, times(1)).sendMessage(textMsg);
}
}
如果使用Mockito,为什么要使用存根?另外,您只创建了一个模拟,没有为它注册任何行为。。。
boolean
的默认值是返回false
。向Mockito注册正确的行为(如果不需要,请丢弃存根)。