Ensure the pytest plugin pytest-mpi is present

and fail with a clear warning when it is not. Resolves h5py#1696.
geojunky · Nov 5, 2020 · 3e0edc3 · 3e0edc3
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diff --git a/news/require-pytest-mpi.rst b/news/require-pytest-mpi.rst
@@ -0,0 +1,29 @@
+New features
+------------
+
+* <news item>
+
+Deprecations
+------------
+
+* <news item>
+
+Exposing HDF5 functions
+-----------------------
+
+* <news item>
+
+Bug fixes
+---------
+
+* <news item>
+
+Building h5py
+-------------
+
+* <news item>
+
+Development
+-----------
+
+* If pytest is missing pytest-mpi then it will now fail immediately with a clear warning message.
diff --git a/pytest.ini b/pytest.ini
@@ -1,3 +1,4 @@
 [pytest]
 filterwarnings =
     error::h5py.h5py_warnings.H5pyDeprecationWarning
+required_plugins = pytest-mpi