diff --git a/src/exengine/kernel/test/test_data_handler.py b/src/exengine/kernel/test/test_data_handler.py
index 4c11694..28282d1 100644
--- a/src/exengine/kernel/test/test_data_handler.py
+++ b/src/exengine/kernel/test/test_data_handler.py
@@ -50,7 +50,10 @@ def mock_data_storage():
 
 @pytest.fixture
 def data_handler(mock_data_storage, mock_execution_engine):
-    return DataHandler(mock_data_storage, _executor=mock_execution_engine)
+    dh = DataHandler(mock_data_storage, _executor=mock_execution_engine)
+    yield dh
+    dh.finish()
+
 
 
 def test_data_handler_put_and_get(data_handler):
@@ -68,7 +71,7 @@ def test_data_handler_put_and_get(data_handler):
     assert retrieved_metadata == metadata
 
 
-def test_data_handler_processing_function(data_handler, mock_data_storage):
+def test_data_handler_processing_function(mock_data_storage):
     """
     Test that DataHandler can process data using a provided processing function, and that
     data_handler.get() returns the processed data not the original data.
@@ -97,6 +100,8 @@ def process_function(coords, image, metadata):
     assert np.array_equal(retrieved_image, image * 2)
     assert retrieved_metadata == metadata
 
+    handler_with_processing.finish()
+
 
 def test_data_handler_shutdown(data_handler, mock_data_storage):
     """
@@ -106,6 +111,7 @@ def test_data_handler_shutdown(data_handler, mock_data_storage):
     data_handler.await_completion()
 
     assert mock_data_storage.finished
+
 def test_data_handler_with_acquisition_future(data_handler):
     """
     Test that DataHandler interacts correctly with AcquisitionFuture.
@@ -122,4 +128,4 @@ def _notify_data(self, coords, data, metadata, processed, stored):
 
     data_handler.put(coords, image, metadata, future)
 
-    assert future.notified
+    assert future.notified
\ No newline at end of file
diff --git a/src/exengine/kernel/test/test_executor.py b/src/exengine/kernel/test/test_executor.py
index fe7b638..83c9b39 100644
--- a/src/exengine/kernel/test/test_executor.py
+++ b/src/exengine/kernel/test/test_executor.py
@@ -295,7 +295,7 @@ def test_event_prioritization(execution_engine):
     while not event1.executed or not event2.executed or not event3.executed:
         time.sleep(0.1)
 
-    assert event3.executed_time < event2.executed_time
+    assert event3.executed_time <= event2.executed_time
     assert event1.executed
     assert event2.executed
     assert event3.executed