diff --git a/pycromanager/test/test_hook_functions.py b/pycromanager/test/test_callback_functions.py
similarity index 76%
rename from pycromanager/test/test_hook_functions.py
rename to pycromanager/test/test_callback_functions.py
index 9675d945..36182582 100644
--- a/pycromanager/test/test_hook_functions.py
+++ b/pycromanager/test/test_callback_functions.py
@@ -1,3 +1,6 @@
+"""
+tests for acquisition hooks, image processors, image_saved functions, etc
+"""
 import numpy as np
 from pycromanager import Acquisition, multi_d_acquisition_events
 
@@ -41,6 +44,25 @@ def hook_fn(image, metadata):
 
     assert dataset is None
 
+
+def test_img_process_fn_image_saved_fn_consistency(launch_mm_headless, setup_data_folder):
+    def processed(image, metadata):
+        processed.num_processed += 1
+        return image, metadata
+    processed.num_processed = 0
+
+    def saved(_axis, _dataset):
+        saved.num_saved += 1
+    saved.num_saved = 0
+
+    with Acquisition(directory=setup_data_folder, name="acq",
+                     image_saved_fn=saved, image_process_fn=processed,
+                     show_display=False) as acq:
+        acq.acquire(multi_d_acquisition_events(num_time_points=200))
+
+    assert(processed.num_processed == 200)
+    assert(saved.num_saved == 200)
+
 def test_event_serialize_and_deserialize(launch_mm_headless):
     """
     Test for cycle consistency of event serialization and deserialization.