Windows support (#24) #24

	name: CI

	on:
	push:
	branches:
	- main
	pull_request:
	schedule:
	- cron: '1 5 * * 1'

	# Cancel running jobs if new commits are pushed
	concurrency:
	group: >
	${{ github.workflow }}-
	${{ github.event.pull_request.number \|\| github.ref }}
	cancel-in-progress: true

	jobs:
	tests:
	strategy:
	fail-fast: false
	matrix:
	python: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
	os: [ubuntu-latest, macos-latest, windows-latest]
	mpi: [mpich, openmpi, msmpi]
	exclude:
	- os: ubuntu-latest
	mpi: msmpi
	- os: macos-latest
	mpi: msmpi
	- os: windows-latest
	mpi: mpich
	- os: windows-latest
	mpi: openmpi
	include:
	- mpi: mpich
	mpiexec: mpiexec
	- mpi: openmpi
	mpiexec: mpiexec --oversubscribe
	- mpi: msmpi
	mpiexec: mpiexec
	runs-on: ${{ matrix.os }}
	defaults:
	run:
	# Micromamba needs a login shell to make sure the environment is active
	shell: bash -el {0}
	env:
	PYTEST_MPI_MAX_NPROCS: 3
	steps:
	- uses: actions/checkout@v4

	- name: Install Conda environment with Micromamba
	uses: mamba-org/setup-micromamba@v1
	with:
	environment-file: ".github/etc/test_environment_${{ matrix.mpi }}.yml"
	create-args: >-
	python=${{ matrix.python }}

	- name: Install mpi-pytest
	run: pip install --no-deps -e .

	- name: Run tests
	run: \|
	: # 'forking' mode
	pytest -v tests
	: # 'non-forking' mode
	${{ matrix.mpiexec }} -n 1 pytest -v -m "not parallel or parallel[1]" tests
	${{ matrix.mpiexec }} -n 2 pytest -v -m parallel[2] tests
	${{ matrix.mpiexec }} -n 3 pytest -v -m parallel[3] tests

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