Add test for websocket+HTTP root path

Test for quarkusio#22053

extensions/websockets/server/deployment/src/test/java/io/quarkus/websockets/test/WebsocketRootPathTestCase.java

@@ -0,0 +1,60 @@
+package io.quarkus.websockets.test;
+
+import java.net.URI;
+import java.util.concurrent.LinkedBlockingDeque;
+import java.util.concurrent.TimeUnit;
+
+import javax.websocket.ClientEndpointConfig;
+import javax.websocket.ContainerProvider;
+import javax.websocket.Endpoint;
+import javax.websocket.EndpointConfig;
+import javax.websocket.MessageHandler;
+import javax.websocket.Session;
+
+import org.jboss.shrinkwrap.api.asset.StringAsset;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import io.quarkus.test.QuarkusUnitTest;
+import io.quarkus.test.common.http.TestHTTPResource;
+
+/**
+ * smoke test that websockets work as expected in dev mode
+ */
+public class WebsocketRootPathTestCase {
+
+    @TestHTTPResource("foo/echo")
+    URI echoUri;
+
+    @RegisterExtension
+    public static final QuarkusUnitTest test = new QuarkusUnitTest()
+            .withApplicationRoot(a -> {
+                a.addClasses(EchoWebSocket.class, EchoService.class)
+                        .add(new StringAsset("quarkus.http.root-path=/foo"), "application.properties");
+            });
+
+    @Test
+    public void testHttpRootPath() throws Exception {
+
+        LinkedBlockingDeque<String> message = new LinkedBlockingDeque<>();
+        Session session = ContainerProvider.getWebSocketContainer().connectToServer(new Endpoint() {
+            @Override
+            public void onOpen(Session session, EndpointConfig endpointConfig) {
+                session.addMessageHandler(new MessageHandler.Whole<String>() {
+                    @Override
+                    public void onMessage(String s) {
+                        message.add(s);
+                    }
+                });
+                session.getAsyncRemote().sendText("hello");
+            }
+        }, ClientEndpointConfig.Builder.create().build(), echoUri);
+
+        try {
+            Assertions.assertEquals("hello", message.poll(20, TimeUnit.SECONDS));
+        } finally {
+            session.close();
+        }
+    }
+}