Fixing test that was broke on MacOS #5563

	name: ARMI unit tests

	on:
	push:
	paths-ignore:
	- 'doc/**'
	pull_request:
	paths-ignore:
	- 'doc/**'

	jobs:
	build:

	runs-on: ubuntu-22.04
	strategy:
	matrix:
	python: [3.7, 3.8, 3.9, '3.10', '3.11']

	steps:
	- uses: actions/checkout@v2
	- name: Setup Python
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python }}
	- name: Update package index
	run: sudo apt-get update
	- name: Install mpi libs
	run: sudo apt-get -y install libopenmpi-dev
	- name: Run Tests and Coverage
	run: \|
	pip install -e .[memprof,mpi,test]
	pytest -n 4 armi
	mpiexec -n 2 --use-hwthread-cpus coverage run --rcfile=pyproject.toml -m pytest --cov=armi --cov-config=pyproject.toml --cov-report=lcov --cov-append --ignore=venv armi/tests/test_mpiFeatures.py \|\| true
	mpiexec -n 2 --use-hwthread-cpus coverage run --rcfile=pyproject.toml -m pytest --cov=armi --cov-config=pyproject.toml --cov-report=lcov --cov-append --ignore=venv armi/tests/test_mpiParameters.py \|\| true
	coverage combine --rcfile=pyproject.toml --keep -a

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