[fix][test] Stop worker services when tearing down PulsarFunctionTlsT…

…est. (apache#17054)

pulsar-broker/src/test/java/org/apache/pulsar/functions/worker/PulsarFunctionTlsTest.java

@@ -71,6 +71,7 @@ public class PulsarFunctionTlsTest {
     protected PulsarService[] pulsarServices = new PulsarService[BROKER_COUNT];
     protected PulsarService leaderPulsar;
     protected PulsarAdmin leaderAdmin;
+    protected WorkerService[] fnWorkerServices = new WorkerService[BROKER_COUNT];
     protected String testCluster = "my-cluster";
     protected String testTenant = "my-tenant";
     protected String testNamespace = testTenant + "/my-ns";
@@ -137,12 +138,12 @@ void setup() throws Exception {
             workerConfig.setBrokerClientAuthenticationEnabled(true);
             workerConfig.setTlsEnabled(true);
             workerConfig.setUseTls(true);
-            WorkerService fnWorkerService = WorkerServiceLoader.load(workerConfig);
+            fnWorkerServices[i] = WorkerServiceLoader.load(workerConfig);
 
             configurations[i] = config;
 
             pulsarServices[i] = new PulsarService(
-                config, workerConfig, Optional.of(fnWorkerService), code -> {});
+                config, workerConfig, Optional.of(fnWorkerServices[i]), code -> {});
             pulsarServices[i].start();
 
             // Sleep until pulsarServices[0] becomes leader, this way we can spy namespace bundle assignment easily.
@@ -181,6 +182,9 @@ void tearDown() throws Exception {
                 if (pulsarAdmins[i] != null) {
                     pulsarAdmins[i].close();
                 }
+                if (fnWorkerServices[i] != null) {
+                    fnWorkerServices[i].stop();
+                }
                 if (pulsarServices[i] != null) {
                     pulsarServices[i].close();
                 }