add mpi4py in tests.

Author: roland-lenain

.github/workflows/python-package.yml

@@ -17,25 +17,30 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
+        mpi: ['mpich']
 
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v3
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        python -m pip install flake8 pytest
-        python -m pip install .[test]
-        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-    - name: Lint with flake8
-      run: |
-        # stop the build if there are Python syntax errors or undefined names
-        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
-        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
-    - name: Test with pytest
-      run: |
-        pytest
+      - uses: actions/checkout@v3
+      - name: Setup MPI
+        uses: mpi4py/setup-mpi@v1
+        with:
+          mpi: ${{ matrix.mpi }}
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v3
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install flake8 pytest
+          python -m pip install ".[test, mpi]"
+          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+      - name: Lint with flake8
+        run: |
+          # stop the build if there are Python syntax errors or undefined names
+          flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+          # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+          flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+      - name: Test with pytest
+        run: |
+          pytest

setup.py

@@ -150,6 +150,7 @@ def get_version():
     # Similar to `install_requires` above, these must be valid existing
     # projects.
     extras_require={  # Optional
+        "mpi": ["mpi4py",],
         "docs": ["sphinx-rtd-theme==1.1.1",
                  "sphinx>=5.0.0",
                  "myst-parser",

src/icoco/utils.py

@@ -26,7 +26,7 @@ class MEDCouplingField:  # pylint: disable=too-few-public-methods
             """dummy class for MEDCouplingField type hinting"""
 
 
-try:  # pragma: no cover
+try:
     import mpi4py
     mpi4py.rc.initialize = False
     mpi4py.rc.finalize = False

tox.ini

@@ -12,6 +12,7 @@ deps =
     pytest-coverage
     pylint
     flake8
+    mpi4py
 extras =
     test
 commands =