S/MIME detection fix #29 #106

	name: tests
	on: [push]
	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.7, 3.8, 3.9, "3.10", 3.11]
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install M2Crypto
	pip install -e .
	- name: Run tests
	run: python3 tests.py
	# As we support both python-magic and file-magic, try them one by one.
	- name: Test python-magic
	run: python3 tests.py TestMime.test_libmagic
	- name: Uninstall python-magic
	run: pip uninstall python-magic -y
	- name: Test libmagic missing
	id: should_fail
	run: python3 tests.py TestMime.test_libmagic
	continue-on-error: true
	- name: Check on failures
	if: steps.should_fail.outcome != 'failure'
	run: exit 1
	- name: Install file-magic
	run: pip install file-magic
	- name: Test file-magic
	run: python3 tests.py TestMime.test_libmagic

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