我已經使用Java EE 7提供的api實現了一個WebSocket。此外,我已經實現了一個請求我的WebSocket沒有任何問題的客戶端。爲了確保在執行一些代碼更改時仍然有效,我想實現也可以在構建服務器上運行的測試,例如, Jenkins CI不僅在當地。我正在使用maven。如何測試Java EE7 Websocket
這裏是我的服務器端點:
import javax.enterprise.context.ApplicationScoped;
import javax.websocket.*;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
@ApplicationScoped
@ServerEndpoint("/example")
public class WebSocket {
private final Set<Session> sessions = Collections.synchronizedSet(new HashSet<>());
@OnOpen
public void open(Session session) {
sessions.add(session);
}
@OnClose
public void close(Session session) {
sessions.remove(session);
}
@OnError
public void onError(Throwable error) {
//TODO do something
}
@OnMessage
public void handleMessage(String message, Session session) throws IOException {
session.getBasicRemote().sendText("Hello "+message+"!");
}
}
這裏是我的客戶端點:
import javax.websocket.*;
import java.io.IOException;
import java.net.URI;
@ClientEndpoint
public class WebsocketClient {
private String uri = "ws://localhost:8181/<some-path>/example";
private Session userSession = null;
private String answer;
public WebsocketClient() {
try {
WebSocketContainer container = ContainerProvider
.getWebSocketContainer();
container.connectToServer(this, new URI(uri));
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public boolean isClosed() {
return userSession == null || !userSession.isOpen();
}
@OnOpen
public void onOpen(Session userSession) {
this.userSession = userSession;
}
@OnClose
public void onClose(Session userSession, CloseReason reason) {
this.userSession = null;
}
@OnMessage
public void onMessage(String message) {
this.answer = message;
}
public String getAnswer() {
return answer;
}
public void sendMessage(String message) {
if (userSession != null && userSession.isOpen())
try {
this.userSession.getBasicRemote().sendText(message);
} catch (IOException e) {
e.printStackTrace();
}
else {
System.out.println("Session closed!");
}
}
public void reset() {
this.answer = null;
}
}
我也有正在使用CDI構建服務器上測試了一些其他類。爲了能夠使用CDI和其他應用程序容器功能,我使用EJBContainerRunner
與Apache TomeEE/OpenEJB版本7.0.0-M3
,它啓動嵌入式TomEE運行我的測試,然後關閉它。使用這種方法我沒有可以調用的URL。這適用於例如JAX-RS REST服務,您可以在測試中簡單地調用您的類方法並檢查響應。但是你如何用WebSockets做這樣的事情?由於缺少Session
,我不能簡單地調用這些方法。
我目前的測試是這樣的:
import org.apache.openejb.junit.jee.EJBContainerRunner;
import org.junit.Test;
import org.junit.runner.RunWith;
import java.net.SocketException;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.is;
@RunWith(EJBContainerRunner.class)
public class TestWebsocket {
private WebsocketClient socket;
@Test
public void test() throws SocketException {
String answer = requestSynchronous("Java");
assertThat(answer, is(equalTo("Hello Java!")));
}
public String requestSynchronous(String message) throws SocketException {
if (socket == null || socket.isClosed()) {
socket = new WebsocketClient();
}
socket.reset();
socket.sendMessage(message);
String answer = null;
int i = 0;
while (answer == null && i < 10000) {
try {
answer = socket.getAnswer();
Thread.sleep(1);
i++;
} catch (InterruptedException e) {
e.printStackTrace();
}
}
if (answer != null)
return answer;
else throw new SocketException("Connection timeout");
}
}
這個工程運行TomEE我的本地機器上如tomee-maven-plugin
。但是這種方法無法在構建服務器上完成。有沒有比配置特殊端口或設置虛擬機進行測試更簡單的方法?
在此先感謝!