update tests

Author: lizk886

src/main/java/com/uid2/operator/vertx/OperatorShutdownHandler.java

@@ -101,7 +101,7 @@ public void checkStoreRefreshStaleness() {
             if (timeSinceLastRefresh.compareTo(storeRefreshStaleTimeout) > 0) {
                 LOGGER.error("Store '{}' has not refreshed successfully for {} hours ({}). Shutting down operator",
                         storeName, timeSinceLastRefresh.toHours(), timeSinceLastRefresh);
-                shutdownService.Shutdown(1);
+                this.shutdownService.Shutdown(1);
                 return; // Exit after triggering shutdown for first stale store
             }
         }

src/test/java/com/uid2/operator/OperatorShutdownHandlerTest.java

@@ -19,6 +19,7 @@
 import org.slf4j.LoggerFactory;
 import software.amazon.awssdk.utils.Pair;
 
+import java.security.Permission;
 import java.time.Clock;
 import java.time.Duration;
 import java.time.Instant;
@@ -61,6 +62,7 @@ void shutdownOnAttestFailure(VertxTestContext testContext) {
             this.operatorShutdownHandler.handleAttestResponse(Pair.of(AttestationResponseCode.AttestationFailure, "Unauthorized"));
         } catch (RuntimeException e) {
             verify(shutdownService).Shutdown(1);
+            String message = logWatcher.list.get(0).getFormattedMessage();
             Assertions.assertEquals("core attestation failed with AttestationFailure, shutting down operator, core response: Unauthorized", logWatcher.list.get(0).getFormattedMessage());
             testContext.completeNow();
         }
@@ -191,8 +193,7 @@ void storeRefreshFailureDoesNotResetTimestamp(VertxTestContext testContext) {
         when(clock.instant()).thenAnswer(i -> Instant.now().plus(2, ChronoUnit.HOURS));
 
         // Simulate multiple refresh failures by NOT calling handleStoreRefresh
-        // (failures don't invoke the callback anymore)
-        
+ 
         when(clock.instant()).thenAnswer(i -> Instant.now().plus(13, ChronoUnit.HOURS));
 
         try {