Try more test hacking to get reproducible example

.github/workflows/ci.yaml

@@ -66,18 +66,6 @@ jobs:
         shell: bash -l {0}
         run: |
           pytest satpy/tests/enhancement_tests/test_enhancements.py::test_nwcsaf_comps
-      - name: Run unit tests - enhancement_tests - enhancements
-        shell: bash -l {0}
-        run: |
-          pytest satpy/tests/enhancement_tests/test_enhancements.py
-      - name: Run unit tests - enhancement_tests - viirs
-        shell: bash -l {0}
-        run: |
-          pytest satpy/tests/enhancement_tests/test_viirs.py
-      - name: Run unit tests - modifier_tests
-        shell: bash -l {0}
-        run: |
-          pytest satpy/tests/modifier_tests
       - name: Run unit tests - scene_tests
         shell: bash -l {0}
         run: |

satpy/tests/enhancement_tests/test_enhancements.py

@@ -17,6 +17,7 @@
 
 import contextlib
 import os
+from datetime import datetime
 from tempfile import NamedTemporaryFile
 from unittest import mock
 
@@ -577,23 +578,22 @@ def fake_area():
 )
 def test_nwcsaf_comps(fake_area, tmp_path, data):
     """Test loading NWCSAF composites."""
-    return
     from satpy.writers import get_enhanced_image
 
     from ... import Scene
     (flavour, dvname, altname, palettename, statusname, comp, filelabel, dtp) = _nwcsaf_geo_props[data]
     rng = (0, 100) if dtp == "uint8" else (-100, 1000)
+    now = datetime.utcnow()
     if flavour == "geo":
-        fn = f"S_NWC_{filelabel:s}_MSG2_MSG-N-VISIR_20220124T094500Z.nc"
+        fn = f"S_NWC_{filelabel:s}_MSG2_MSG-N-VISIR_{now:%Y%m%dT%H%M%S}Z.nc"
         reader = "nwcsaf-geo"
         id_ = {"satellite_identifier": "MSG4"}
     else:
-        fn = f"S_NWC_{filelabel:s}_noaa20_00000_20230301T1200213Z_20230301T1201458Z.nc"
+        fn = f"S_NWC_{filelabel:s}_noaa20_00000_{now:%Y%m%dT%H%M%S}0Z_{now:%Y%m%dT%H%M%S}0Z.nc"
         reader = "nwcsaf-pps_nc"
         id_ = {"platform": "NOAA-20"}
     fk = tmp_path / fn
-    # create a minimally fake netCDF file, otherwise satpy won't load the
-    # composite
+    # create a minimally fake netCDF file, otherwise satpy won't load the composite
     ds = xr.Dataset(
         coords={"nx": [0], "ny": [0]},
         attrs={
@@ -604,6 +604,8 @@ def test_nwcsaf_comps(fake_area, tmp_path, data):
     )
     ds.attrs.update(id_)
     ds.to_netcdf(fk)
+    import time
+    time.sleep(1)
     # sc = Scene(filenames=[os.fspath(fk)], reader=[reader])
     # sc[palettename] = xr.DataArray(
     #     da.tile(da.arange(256), [3, 1]).T,