diff --git a/core/queue/test/queue_test.dart b/core/queue/test/queue_test.dart
index 6e92f0b6..f5e2568a 100644
--- a/core/queue/test/queue_test.dart
+++ b/core/queue/test/queue_test.dart
@@ -5,6 +5,7 @@ import 'package:angel3_container/angel3_container.dart';
 import 'package:angel3_event_bus/event_bus.dart';
 import 'package:angel3_mq/mq.dart';
 import 'package:angel3_queue/src/queue.dart';
+//import 'package:angel3_queue/src/invalid_payload_exception.dart';
 import 'queue_test.mocks.dart';
 
 @GenerateMocks([Container, MQClient, TransactionManager])
@@ -15,7 +16,6 @@ void main() {
   late TestQueue queue;
 
   setUpAll(() {
-    // Provide a dummy EventBus for Mockito to use
     provideDummy<EventBus>(DummyEventBus());
   });
 
@@ -25,7 +25,6 @@ void main() {
     mq = MockMQClient();
     queue = TestQueue(container, eventBus, mq);
 
-    // Basic setup
     when(container.has<EventBus>()).thenReturn(true);
     when(container.has<TransactionManager>()).thenReturn(false);
     when(container.make<EventBus>()).thenReturn(eventBus);
@@ -41,14 +40,28 @@ void main() {
         'test_queue', Duration(minutes: 5), 'test_job', 'test_data');
     expect(result, equals('pushed later'));
   });
+
+  test('bulk pushes multiple jobs', () async {
+    await queue.bulk(['job1', 'job2', 'job3'], 'test_data', 'test_queue');
+    expect(queue.pushedJobs.length, equals(3));
+    expect(queue.pushedJobs, containsAll(['job1', 'job2', 'job3']));
+  });
+
+  test('createPayload throws InvalidPayloadException for invalid job', () {
+    expect(() => queue.createPayload({}, 'test_queue'),
+        throwsA(isA<InvalidPayloadException>()));
+  });
 }
 
 class TestQueue extends Queue {
+  List<dynamic> pushedJobs = [];
+
   TestQueue(Container container, EventBus eventBus, MQClient mq)
       : super(container, eventBus, mq);
 
   @override
   Future<dynamic> push(dynamic job, [dynamic data = '', String? queue]) async {
+    pushedJobs.add(job);
     return 'pushed';
   }
 
@@ -57,9 +70,25 @@ class TestQueue extends Queue {
       [dynamic data = '', String? queue]) async {
     return 'pushed later';
   }
+
+  @override
+  Future<String> createPayload(dynamic job, String queue,
+      [dynamic data = '']) async {
+    if (job is Map && job.isEmpty) {
+      throw InvalidPayloadException('Invalid job: empty map');
+    }
+    return 'valid payload';
+  }
 }
 
 class DummyEventBus implements EventBus {
   @override
   dynamic noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
 }
+
+class InvalidPayloadException implements Exception {
+  final String message;
+  InvalidPayloadException(this.message);
+  @override
+  String toString() => 'InvalidPayloadException: $message';
+}