diff --git a/tests/test_data/POPtestdata_time.nc b/tests/test_data/POPtestdata_time.nc
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diff --git a/tests/test_data/Uu_eastward_nemo_cross_180lon.nc b/tests/test_data/Uu_eastward_nemo_cross_180lon.nc
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diff --git a/tests/test_data/Vv_eastward_nemo_cross_180lon.nc b/tests/test_data/Vv_eastward_nemo_cross_180lon.nc
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diff --git a/tests/test_data/access-om2-01_u.nc b/tests/test_data/access-om2-01_u.nc
deleted file mode 100644
index e623a28922..0000000000
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diff --git a/tests/test_data/access-om2-01_v.nc b/tests/test_data/access-om2-01_v.nc
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diff --git a/tests/test_data/access-om2-01_wt.nc b/tests/test_data/access-om2-01_wt.nc
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diff --git a/tests/test_data/fieldset_nemo.py b/tests/test_data/fieldset_nemo.py
deleted file mode 100644
index 274a854df5..0000000000
--- a/tests/test_data/fieldset_nemo.py
+++ /dev/null
@@ -1,23 +0,0 @@
-import os
-
-import parcels
-
-
-def create_fieldset():
-    data_path = os.path.join(os.path.dirname(__file__))
-
-    filenames = {
-        "U": {
-            "lon": os.path.join(data_path, "mask_nemo_cross_180lon.nc"),
-            "lat": os.path.join(data_path, "mask_nemo_cross_180lon.nc"),
-            "data": os.path.join(data_path, "Uu_eastward_nemo_cross_180lon.nc"),
-        },
-        "V": {
-            "lon": os.path.join(data_path, "mask_nemo_cross_180lon.nc"),
-            "lat": os.path.join(data_path, "mask_nemo_cross_180lon.nc"),
-            "data": os.path.join(data_path, "Vv_eastward_nemo_cross_180lon.nc"),
-        },
-    }
-    variables = {"U": "U", "V": "V"}
-    dimensions = {"lon": "glamf", "lat": "gphif", "time": "time_counter"}
-    return parcels.FieldSet.from_nemo(filenames, variables, dimensions)
diff --git a/tests/test_data/fieldset_nemo_error.py b/tests/test_data/fieldset_nemo_error.py
deleted file mode 100644
index 3fba9709a1..0000000000
--- a/tests/test_data/fieldset_nemo_error.py
+++ /dev/null
@@ -1,27 +0,0 @@
-import os
-
-import parcels
-
-
-def random_function_name():
-    data_path = os.path.join(os.path.dirname(__file__))
-
-    filenames = {
-        "U": {
-            "lon": os.path.join(data_path, "mask_nemo_cross_180lon.nc"),
-            "lat": os.path.join(data_path, "mask_nemo_cross_180lon.nc"),
-            "data": os.path.join(data_path, "Uu_eastward_nemo_cross_180lon.nc"),
-        },
-        "V": {
-            "lon": os.path.join(data_path, "mask_nemo_cross_180lon.nc"),
-            "lat": os.path.join(data_path, "mask_nemo_cross_180lon.nc"),
-            "data": os.path.join(data_path, "Vv_eastward_nemo_cross_180lon.nc"),
-        },
-    }
-    variables = {"U": "U", "V": "V"}
-    dimensions = {"lon": "glamf", "lat": "gphif", "time": "time_counter"}
-    return parcels.FieldSet.from_nemo(filenames, variables, dimensions)
-
-
-def none_returning_function():
-    return None
diff --git a/tests/test_data/mask_nemo_cross_180lon.nc b/tests/test_data/mask_nemo_cross_180lon.nc
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diff --git a/tests/test_data/perlinfieldsU.nc b/tests/test_data/perlinfieldsU.nc
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