Add test for onOpen exception on WS Next

Author: brunobat

extensions/websockets-next/deployment/src/test/java/io/quarkus/websockets/next/test/telemetry/MicrometerWebSocketsStandaloneTest.java

@@ -0,0 +1,86 @@
+package io.quarkus.websockets.next.test.telemetry;
+
+import io.quarkus.builder.Version;
+import io.quarkus.logging.Log;
+import io.quarkus.maven.dependency.Dependency;
+import io.quarkus.test.QuarkusUnitTest;
+import io.quarkus.test.common.http.TestHTTPResource;
+import io.quarkus.websockets.next.OnOpen;
+import io.quarkus.websockets.next.WebSocket;
+import io.quarkus.websockets.next.WebSocketClient;
+import io.quarkus.websockets.next.WebSocketClientConnection;
+import io.quarkus.websockets.next.WebSocketConnector;
+import io.restassured.RestAssured;
+import io.restassured.response.ValidatableResponse;
+import jakarta.inject.Inject;
+import org.awaitility.Awaitility;
+import org.jboss.shrinkwrap.api.asset.StringAsset;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import java.net.URI;
+import java.time.Duration;
+import java.util.List;
+
+import static io.quarkus.websockets.next.test.telemetry.MetricsAsserter.assertServerConnectionOpeningFailedTotal;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+
+public class MicrometerWebSocketsStandaloneTest {
+
+    @RegisterExtension
+    public static final QuarkusUnitTest test = new QuarkusUnitTest()
+            .withApplicationRoot(root -> root
+                    .addClasses(MetricsAsserter.class)
+                    .addAsResource(new StringAsset("""
+                            bounce-endpoint.prefix-responses=true
+                            quarkus.websockets-next.server.metrics.enabled=true
+                            quarkus.websockets-next.client.metrics.enabled=true
+                            """), "application.properties"))
+            .setForcedDependencies(
+                    List.of(Dependency.of("io.quarkus", "quarkus-micrometer-registry-prometheus-deployment",
+                            Version.getVersion())));
+
+    @Inject
+    WebSocketConnector<ErroneousClient_OnConnectError> onConnectErrorClient;
+
+    @TestHTTPResource("/")
+    URI baseUri;
+
+    static ValidatableResponse getMetrics() {
+        return RestAssured.given().get("/q/metrics").then().statusCode(200);
+    }
+
+    @Test
+    public void testServerEndpoint_OnConnectionError() {
+        WebSocketClientConnection connection = onConnectErrorClient.baseUri(baseUri).connectAndAwait();
+        Awaitility.await().atMost(Duration.ofSeconds(2)).untilAsserted(() -> {
+            // Connection closing is async and takes some time
+            assertFalse(connection.isOpen(),
+                    "Runtime exception happened on server side and connection is still open");
+        });
+
+        Awaitility.await().atMost(Duration.ofSeconds(5)).untilAsserted(() -> {
+            getMetrics()
+                    .body(assertServerConnectionOpeningFailedTotal("/on-connect-error", 1));
+        });
+    }
+
+    @WebSocket(path = "/on-connect-error")
+    public static class OnConnectErrorEndpoint {
+
+        @OnOpen()
+        public void onOpen() {
+            Log.info("onOpen throwing exception");
+            throw new RuntimeException("Crafted exception - Websocket failed to open");
+        }
+    }
+
+    @WebSocketClient(path = "/on-connect-error")
+    public static class ErroneousClient_OnConnectError {
+
+        @OnOpen()
+        public void onOpen() {
+            Log.info("client onOpen");
+        }
+    }
+}