Fixed #884 - tree module header not printed #101

	name: tests
	on: [push]
	jobs:
	run-tests:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]

	steps:
	- uses: actions/checkout@v3

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}

	- name: Prepare prerequisites
	run: sudo apt-get update

	- name: Install prerequisites
	run: sudo apt-get install libxml2-utils xsltproc jing -y

	- name: Install Python dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -e .
	pip install -r dev-requirements.txt

	- name: Run tests
	run: \|
	source env.sh
	export USE_VIRTUALENV=true
	make pylint test TEST_MODE=coverage
	find . -name '.coverage*' -exec mv -t . {} +
	coverage combine
	# Test .gitignore for tests:
	TMP=$(tempfile)
	git ls-files . --exclude-standard --others \| tee "$TMP"
	if test -s "$TMP"; then false; else true; fi
	# Test if we .gitignore any tracked files:
	git ls-files -i --exclude-standard \| tee "$TMP"
	if test -s "$TMP"; then false; else true; fi

	# - name: Coveralls
	# uses: coverallsapp/github-action@master
	# with:
	# github-token: ${{ secrets.GITHUB_TOKEN }}

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