[Test] Adds options for pickle and conftest

Author: lukbrb

tests/conftest.py

@@ -0,0 +1,8 @@
+"""
+Module defining configurations for running the `fv2d` test suite with `pytest`
+Lucas Barbier-Goy
+28/12/2025
+"""
+
+def pytest_configure(config):
+    config.addinivalue_line("markers", "slow: mark test as slow")

tests/ioutils.py

@@ -7,4 +7,4 @@ def h5_to_numpy(h5file: str, numpyfile: str) -> None:
         N = len(f) - 3
         last_ite = f'ite_{N:04d}'
         data = {key: f[last_ite][key][:] for key in f[last_ite].keys()}
-        np.savez(numpyfile, **data)
+        np.savez(numpyfile, **data, allow_pickle=True)