Change testAuth2 to allocate only one server/client

java/flight/flight-core/src/test/java/org/apache/arrow/flight/auth2/TestBasicAuth2.java

@@ -41,9 +41,9 @@
 import org.apache.arrow.vector.types.Types;
 import org.apache.arrow.vector.types.pojo.Field;
 import org.apache.arrow.vector.types.pojo.Schema;
-import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.Assertions;
-import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.RepeatedTest;
 import org.junit.jupiter.api.Test;
 
@@ -57,18 +57,18 @@ public class TestBasicAuth2 {
   private static final String NO_USERNAME = "";
   private static final String PASSWORD_1 = "woohoo1";
   private static final String PASSWORD_2 = "woohoo2";
-  private BufferAllocator allocator;
-  private FlightServer server;
-  private FlightClient client;
-  private FlightClient client2;
+  private static BufferAllocator allocator;
+  private static FlightServer server;
+  private static FlightClient client;
+  private static FlightClient client2;
 
-  @BeforeEach
-  public void setup() throws Exception {
+  @BeforeAll
+  public static void setup() throws Exception {
     allocator = new RootAllocator(Long.MAX_VALUE);
     startServerAndClient();
   }
 
-  private FlightProducer getFlightProducer() {
+  private static FlightProducer getFlightProducer() {
     return new NoOpFlightProducer() {
       @Override
       public void listFlights(CallContext context, Criteria criteria,
@@ -99,19 +99,19 @@ public void getStream(CallContext context, Ticket ticket, ServerStreamListener l
     };
   }
 
-  private void startServerAndClient() throws IOException {
+  private static void startServerAndClient() throws IOException {
     final FlightProducer flightProducer = getFlightProducer();
-    this.server = FlightServer
+    server = FlightServer
         .builder(allocator, forGrpcInsecure(LOCALHOST, 0), flightProducer)
         .headerAuthenticator(new GeneratedBearerTokenAuthenticator(
             new BasicCallHeaderAuthenticator(this::validate)))
         .build().start();
-    this.client = FlightClient.builder(allocator, server.getLocation())
+    client = FlightClient.builder(allocator, server.getLocation())
         .build();
   }
 
-  @AfterEach
-  public void shutdown() throws Exception {
+  @AfterAll
+  public static void shutdown() throws Exception {
     AutoCloseables.close(client, client2, server);
     client = null;
     client2 = null;