diff --git a/tests/test_conf.py b/tests/test_conf.py
index 552af02ff45a637062602d9b9712156ee162ad1f..ad6df62b8795b53c89d5f07ac3ea23b8264e65c6 100644
--- a/tests/test_conf.py
+++ b/tests/test_conf.py
@@ -70,13 +70,19 @@ def test_c_single_threshold(rad, single_threshold, reference_data):
     ref_confidence = np.load(reference_data)["ref_sgl"]
     ref_confidence_flipped = np.load(reference_data)["ref_sgl_flipped"]
 
-    c = anc.py_conf_test(
-        rad, single_threshold[0], single_threshold[2], single_threshold[3], single_threshold[1]
-    )
+    locut = np.array(single_threshold[0], dtype=float)
+    midpt = np.array(single_threshold[1], dtype=float)
+    hicut = np.array(single_threshold[2], dtype=float)
+    power = np.array(single_threshold[3], dtype=float)
+
+    c = anc.py_conf_test(np.array(rad, dtype=np.float32), locut, hicut, power, midpt)
     assert np.all(c == ref_confidence)
 
     single_threshold[0:-1] = single_threshold[-2::-1]
-    c = anc.py.conf_test(
-        rad, single_threshold[0], single_threshold[2], single_threshold[3], single_threshold[1]
-    )
+    locut = np.array(single_threshold[0], dtype=float)
+    midpt = np.array(single_threshold[1], dtype=float)
+    hicut = np.array(single_threshold[2], dtype=float)
+    power = np.array(single_threshold[3], dtype=float)
+
+    c = anc.py_conf_test(np.array(rad, dtype=np.float32), locut, hicut, power, midpt)
     assert np.all(c == ref_confidence_flipped)
diff --git a/tests/test_read_data.py b/tests/test_read_data.py
index e91e7d2f1f9214214d81821c2dcfb7c55d361ead..4135de00825c0205bfb095df85647159ab1092e1 100644
--- a/tests/test_read_data.py
+++ b/tests/test_read_data.py
@@ -103,31 +103,29 @@ def test_l1b(l1b_file, geo_file):
     assert "M11" in l1b.data_vars
 
 
-def test_sst(fixturepath, sst_file, ref_file):
+def test_sst(fixturepath, geo_file, sst_file, ref_file):
     """Test SST reading."""
-    viirs = rd.ReadData(satellite="snpp", sensor="viirs")
+    viirs = rd.ReadData(satellite="snpp", sensor="viirs", file_name_geo=geo_file)
     geo = viirs.read_viirs_geo()
     ancillary = rd.ReadAncillary(
         latitude=geo.latitude.values,
         longitude=geo.longitude.values,
         resolution=1,
-        ancillary_dir=fixturepath,
-        sst_file=sst_file,
+        sst_file=os.path.join(fixturepath, sst_file),
     )
     sst = ancillary.get_sst()
     check_differences(ref_file, sst, "sst")
 
 
-def test_ndvi(fixturepath, ndvi_file, ref_file):
+def test_ndvi(fixturepath, geo_file, ndvi_file, ref_file):
     """Test NDVI reading."""
-    viirs = rd.ReadData(satellite="snpp", sensor="viirs")
+    viirs = rd.ReadData(satellite="snpp", sensor="viirs", file_name_geo=geo_file)
     geo = viirs.read_viirs_geo()
     ancillary = rd.ReadAncillary(
         latitude=geo.latitude.values,
         longitude=geo.longitude.values,
         resolution=1,
-        ancillary_dir=fixturepath,
-        ndvi_file=ndvi_file,
+        ndvi_file=os.path.join(fixturepath, ndvi_file),
     )
     ndvi = ancillary.get_ndvi()
     check_differences(ref_file, ndvi, "ndvi")
@@ -135,6 +133,8 @@ def test_ndvi(fixturepath, ndvi_file, ref_file):
 
 def test_geos(
     fixturepath,
+    l1b_file,
+    geo_file,
     geos_file_1,
     geos_file_2,
     geos_land,
@@ -143,18 +143,18 @@ def test_geos(
     ref_file,
 ):
     """Test GEOS reading."""
-    viirs = rd.ReadData(satellite="snpp", sensor="viirs")
+    viirs = rd.ReadData(satellite="snpp", sensor="viirs", file_name_geo=geo_file)
     geo = viirs.read_viirs_geo()
     ancillary = rd.ReadAncillary(
+        file_name_l1b=l1b_file,
         latitude=geo.latitude.values,
         longitude=geo.longitude.values,
         resolution=1,
-        ancillary_dir=fixturepath,
-        geos_file_1=geos_file_1,
-        geos_file_2=geos_file_2,
-        geos_land=geos_land,
-        geos_ocean=geos_ocean,
-        geos_constants=geos_constants,
+        geos_file_1=os.path.join(fixturepath, geos_file_1),
+        geos_file_2=os.path.join(fixturepath, geos_file_2),
+        geos_land=os.path.join(fixturepath, geos_land),
+        geos_ocean=os.path.join(fixturepath, geos_ocean),
+        geos_constants=os.path.join(fixturepath, geos_constants),
     )
     geos_data = ancillary.get_geos()