diff --git a/tests/test_level1.py b/tests/test_level1.py
index c68c2299d14a004b07571e48ea0f973d9b0018db..95705cd5e4f7d95021983f726ffe86cc1e688bbf 100644
--- a/tests/test_level1.py
+++ b/tests/test_level1.py
@@ -35,11 +35,16 @@ class Level1TestCase(unittest.TestCase):
 
     def test_write(self):
         file_path = "/Users/wsl/temp/csst/import/CSST_MSC_MS_SCI_20240609181116_20240609181347_10109100157991_27_L1_V01.fits"
+        # from io import BytesIO
+        # with open(file_path, "rb") as file:
+        #     file_path = BytesIO(file.read())
+            
         result = level1.write(local_file = file_path, 
             module_id = "MSC",
             level0_id="1010910015799127",
             level1_id = "1010910015799127", 
             pipeline_id = "csst-msc-l1-mbi",
+            file_name= "CSST_MSC_MS_SCI_20240609181116_20240609181347_10109100157991_27_L1_V01.fits",
             pmapname="csst_000128.pmap",
             file_type='SCI', 
             build=1,