diff --git a/imap_processing/tests/hit/test_hit_decom.py b/imap_processing/tests/hit/test_hit_decom.py
index 7cca2edae..cf491a289 100644
--- a/imap_processing/tests/hit/test_hit_decom.py
+++ b/imap_processing/tests/hit/test_hit_decom.py
@@ -1,15 +1,14 @@
 import pytest
 
+from imap_processing import imap_module_directory
 from imap_processing.hit.l0 import hit_l1a_decom
 
 
 @pytest.fixture(scope="session")
 def decom_test_data():
     """Read test data from file"""
-    packet_file = (
-        "imap_processing/tests/hit/PREFLIGHT_raw_record_2023_256_15_59_04_apid1251.pkts"
-    )
-    xtce = "imap_processing/hit/packet_definitions/P_HIT_HSKP.xml"
+    packet_file = f"{imap_module_directory}/tests/hit/PREFLIGHT_raw_record_2023_256_15_59_04_apid1251.pkts"  # noqa
+    xtce = f"{imap_module_directory}/hit/packet_definitions/P_HIT_HSKP.xml"
     data_packet_list = hit_l1a_decom.decom_hit_packets(packet_file, xtce)
     return data_packet_list
 
diff --git a/imap_processing/tests/idex/imap_idex_l0_20230725_v01-00.pkts b/imap_processing/tests/idex/imap_idex_l0_raw_20230725_20230725_v01-00.pkts
similarity index 100%
rename from imap_processing/tests/idex/imap_idex_l0_20230725_v01-00.pkts
rename to imap_processing/tests/idex/imap_idex_l0_raw_20230725_20230725_v01-00.pkts
diff --git a/imap_processing/tests/idex/test_decom.py b/imap_processing/tests/idex/test_decom.py
index 403c39185..b5c353355 100644
--- a/imap_processing/tests/idex/test_decom.py
+++ b/imap_processing/tests/idex/test_decom.py
@@ -1,12 +1,20 @@
+"""Tests the decommutation process for IDEX CCSDS Packets."""
+
+from pathlib import Path
+
 import numpy as np
 import pytest
 
+from imap_processing import imap_module_directory
 from imap_processing.idex.idex_packet_parser import PacketParser
 
 
 @pytest.fixture(scope="session")
 def decom_test_data():
-    return PacketParser("imap_processing/tests/idex/imap_idex_l0_20230725_v01-00.pkts")
+    test_file = Path(
+        f"{imap_module_directory}/tests/idex/imap_idex_l0_raw_20230725_20230725_v01-00.pkts"
+    )
+    return PacketParser(test_file)
 
 
 def test_idex_decom_length(decom_test_data):
@@ -23,6 +31,7 @@ def test_idex_decom_event_num(decom_test_data):
 def test_idex_tof_high_data(decom_test_data):
     # Verify that a sample of the data is correct
     # impact_14_tof_high_data.txt has been verified correct by the IDEX team
-    with open("imap_processing/tests/idex/impact_14_tof_high_data.txt") as f:
+
+    with open(f"{imap_module_directory}/tests/idex/impact_14_tof_high_data.txt") as f:
         data = np.array([int(line.rstrip("\n")) for line in f])
     assert (decom_test_data.data["TOF_High"][13].data == data).all()
diff --git a/imap_processing/tests/idex/test_l1_cdfs.py b/imap_processing/tests/idex/test_l1_cdfs.py
index d419ae22b..f2cb200d7 100644
--- a/imap_processing/tests/idex/test_l1_cdfs.py
+++ b/imap_processing/tests/idex/test_l1_cdfs.py
@@ -1,17 +1,24 @@
+"""Tests the L1 processing for decommutated IDEX data"""
+
+from pathlib import Path
+
 import numpy as np
 import pytest
 import xarray as xr
 from cdflib.xarray import cdf_to_xarray
 from cdflib.xarray.xarray_to_cdf import ISTPError
 
-from imap_processing import idex
+from imap_processing import idex, imap_module_directory
 from imap_processing.cdf.utils import write_cdf
 from imap_processing.idex.idex_packet_parser import PacketParser
 
 
 @pytest.fixture()
 def decom_test_data():
-    return PacketParser("imap_processing/tests/idex/imap_idex_l0_20230725_v01-00.pkts")
+    test_file = Path(
+        f"{imap_module_directory}/tests/idex/imap_idex_l0_raw_20230725_20230725_v01-00.pkts"
+    )
+    return PacketParser(test_file)
 
 
 def test_idex_cdf_file(decom_test_data):
@@ -75,7 +82,7 @@ def test_descriptor_in_file_name(decom_test_data):
 def test_idex_tof_high_data_from_cdf(decom_test_data):
     # Verify that a sample of the data is correct inside the CDF file
     # impact_14_tof_high_data.txt has been verified correct by the IDEX team
-    with open("imap_processing/tests/idex/impact_14_tof_high_data.txt") as f:
+    with open(f"{imap_module_directory}/tests/idex/impact_14_tof_high_data.txt") as f:
         data = np.array([int(line.rstrip()) for line in f])
 
     file_name = write_cdf(decom_test_data.data, descriptor="test")