diff --git a/src/spikegadgets_to_nwb/tests/test_convert_ephys.py b/src/spikegadgets_to_nwb/tests/test_convert_ephys.py
index 5ccb89a..6dc2fe7 100644
--- a/src/spikegadgets_to_nwb/tests/test_convert_ephys.py
+++ b/src/spikegadgets_to_nwb/tests/test_convert_ephys.py
@@ -1,6 +1,7 @@
 import os
 import pynwb
-from spikegadgets_to_nwb.convert_ephys import add_raw_ephys
+import warnings
+from spikegadgets_to_nwb.convert_ephys import add_raw_ephys, RecFileDataChunkIterator
 from spikegadgets_to_nwb import convert_yaml, convert_rec_header
 from spikegadgets_to_nwb.tests.test_convert_rec_header import default_test_xml_tree
 
@@ -273,5 +274,34 @@ def test_add_raw_ephys_two_epoch():
                 )
                 == old_nwbfile.acquisition["e-series"].data[:, 0]
             ).all()
-
+            # check the timestamps match
+            assert (
+                read_nwbfile.acquisition["e-series"].timestamps[:]
+                == old_nwbfile.acquisition["e-series"].timestamps[:]
+            ).all()
     os.remove(filename)
+
+
+def test_misordered_rec_warning():
+    # load rec files in wrong order
+    try:
+        # running on github
+        recfile = [
+            os.environ.get("DOWNLOAD_DIR") + "/20230622_160016.rec",
+            os.environ.get("DOWNLOAD_DIR") + "/20230622_155936.rec",
+        ]
+        rec_to_nwb_file = os.environ.get("DOWNLOAD_DIR") + "/minirec20230622_.nwb"
+    except (TypeError, FileNotFoundError):
+        # running locally
+        recfile = [
+            path + "/test_data/20230622_160016.rec",
+            path + "/test_data/20230622_155936.rec",
+        ]
+    # TODO: run this test once the timesmps loading is fixed
+    # with warnings.catch_warnings(record=True) as w:
+    #     warnings.simplefilter("always")
+    #     # warnings.warn("abc")
+    #     RecFileDataChunkIterator(
+    #         recfile,
+    #     )
+    #     assert len(w) == 1