test:
	python2 -m unittest test_preserves
	python3 -m unittest test_preserves

coverage:
	python2-coverage run --branch -m unittest test_preserves
	python3-coverage run --branch -m unittest test_preserves
	python3-coverage html

clean:
	rm -rf htmlcov
	rm -rf __pycache__
	rm -f *.pyc
	rm -f .coverage