Trying concurrent importing of nc libs for ci

Author: mraspaud

.github/workflows/ci.yaml

@@ -113,7 +113,7 @@ jobs:
         shell: bash -l {0}
         run: |
           export LD_PRELOAD=${{ env.LD_PRELOAD }};
-          pytest --forked -n auto --cov=satpy satpy/tests --cov-report=xml --cov-report=
+          pytest -n auto --cov=satpy satpy/tests --cov-report=xml --cov-report=
 
       - name: Upload unittest coverage to Codecov
         uses: codecov/codecov-action@v5

continuous_integration/environment.yaml

@@ -58,7 +58,6 @@ dependencies:
   - ephem
   - bokeh
   - pytest-xdist
-  - pytest-forked
   - pip:
       - pytest-lazy-fixtures
       - trollsift

satpy/tests/reader_tests/test_netcdf_utils.py

@@ -66,19 +66,11 @@ def get_test_content(self, filename, filename_info, filetype_info):
         raise NotImplementedError("Fake File Handler subclass must implement 'get_test_content'")
 
 
-@pytest.fixture
-def netcdf_file(tmp_path):
+@pytest.fixture(scope="session")
+def netcdf_file(tmp_path_factory):
     """Create a test NetCDF4 file."""
-    filename = tmp_path / "test.nc"
-    from multiprocessing import Process
-    p = Process(target=_create_netcdf_file, args=(filename, ))
-    p.start()
-    p.join()
-    return filename
-
-
-def _create_netcdf_file(filename):
     from netCDF4 import Dataset
+    filename = tmp_path_factory.mktemp("data") / "test.nc"
     with closing(Dataset(filename, "w")) as nc:
         # Create dimensions
         nc.createDimension("rows", 10)