test/chat-stomp-2: STOMP 세션 CONNECT 테스트 코드 작성

- StompHandlerAdapter 클래스의 메서드 이용해
연결 정보 표시

- Connect 구현 -> 예시 : Connected: {version=[1.2], heart-beat=[0,0]}
- Timeout은 60Sec
- session의 Connect 성공 후에는 disconnect

- build.gradle 에서는 JVM 메모리 부족 이슈로 MemberControllerTest와 동일하게 제외

build.gradle

@@ -76,4 +76,5 @@ dependencies {
 tasks.named('test') {
 	useJUnitPlatform()
 	exclude '**/MemberControllerTest.*'
+	exclude '**/WebSocketConnectTest.*'
 }

src/test/java/com/dife/api/controller/chat/WebSocketConnectTest.java

@@ -0,0 +1,68 @@
+package com.dife.api.controller.chat;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import com.dife.api.config.LocalRedisConfig;
+import com.dife.api.config.TestConfig;
+import java.lang.reflect.Type;
+import java.util.concurrent.TimeUnit;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.test.web.server.LocalServerPort;
+import org.springframework.context.annotation.Import;
+import org.springframework.messaging.converter.StringMessageConverter;
+import org.springframework.messaging.simp.stomp.StompHeaders;
+import org.springframework.messaging.simp.stomp.StompSession;
+import org.springframework.messaging.simp.stomp.StompSessionHandlerAdapter;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.web.socket.client.WebSocketClient;
+import org.springframework.web.socket.client.standard.StandardWebSocketClient;
+import org.springframework.web.socket.messaging.WebSocketStompClient;
+import org.testcontainers.junit.jupiter.Testcontainers;
+
+@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
+@ActiveProfiles("test")
+@Import(TestConfig.class)
+@ExtendWith(LocalRedisConfig.class)
+@Testcontainers
+public class WebSocketConnectTest {
+
+	@LocalServerPort private int port;
+
+	@Test
+	public void testWebSocketConnect() throws Exception {
+		String url = "ws://localhost:" + port + "/ws";
+
+		WebSocketClient webSocketClient = new StandardWebSocketClient();
+		WebSocketStompClient stompClient = new WebSocketStompClient(webSocketClient);
+		stompClient.setMessageConverter(new StringMessageConverter());
+
+		StompSession session =
+				stompClient
+						.connect(
+								url,
+								new StompSessionHandlerAdapter() {
+									@Override
+									public void afterConnected(StompSession session, StompHeaders connectedHeaders) {
+										System.out.println("Connected: " + connectedHeaders);
+									}
+
+									@Override
+									public void handleFrame(StompHeaders headers, Object payload) {
+										System.out.println("Received: " + payload);
+									}
+
+									@Override
+									public Type getPayloadType(StompHeaders headers) {
+										return String.class;
+									}
+								})
+						.get(60, TimeUnit.SECONDS);
+
+		assertThat(session.isConnected()).isTrue();
+
+		session.disconnect();
+	}
+}