Add test #578

	# Uses Black to reformat the Python code on the all but the main branch.

	name: Format

	on:
	push:
	branches:
	- '**' # matches every branch
	- '!main' # excludes master

	permissions:
	contents: write

	jobs:
	format:
	runs-on: ubuntu-latest
	steps:
	# Checkout the main branch
	- uses: actions/checkout@v3

	# Setup Python environment
	- uses: actions/setup-python@v3

	# Install black
	- name: Install black
	run: pip install black

	# Execute black in check mode
	- name: Black
	id: black
	run: echo ::set-output name=format::$(black --check --quiet . \|\| echo "true")

	# Execute black and commit the change to the main branch
	- name: Commit to the main branch
	if: steps.black.outputs.format == 'true'
	run: \|
	black .
	git config --global user.name 'github-actions[bot]'
	git config --global user.email 'github-actions[bot]@users.noreply.github.com'
	git commit -am "[github-action] formatting fixes"
	git push

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