add support to run test suite at the end of a build job #389

	name: Run tests
	on: [push, pull_request]
	# Declare default permissions as read only.
	permissions: read-all
	jobs:
	test:
	runs-on: ubuntu-20.04
	strategy:
	matrix:
	python: [3.6, 3.7, 3.8, 3.9, '3.10', '3.11']
	fail-fast: false
	steps:
	- name: checkout
	uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 # v3.1.0

	- name: set up Python
	uses: actions/setup-python@13ae5bb136fac2878aff31522b9efb785519f984 # v4.3.0
	with:
	python-version: ${{matrix.python}}

	- name: Install required Python packages + pytest + flake8
	run: \|
	python -m pip install --upgrade pip
	python -m pip install -r requirements.txt
	python -m pip install pytest
	python -m pip install --upgrade flake8

	- name: Run test suite
	run: \|
	./test.sh

	- name: Run flake8 to verify PEP8-compliance of Python code
	run: \|
	flake8

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