improve board mock and implement busio singletons #13

	name: test/lint

	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]

	jobs:
	run:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Set up Python
	uses: actions/setup-python@v5
	id: setup-python
	with:
	python-version: '3.x'
	- name: Install dependencies
	run: pip install -r tests/requirements.txt -e . -r requirements-dev.txt
	- name: Cache pre-commit venv(s)
	uses: actions/cache@v4
	with:
	path: '~/.cache/pre-commit'
	key: pre-commit_${{ steps.setup-python.outputs.python-version }}_${{ hashfiles('.pre-commit-config.yaml') }}
	- name: Run pre-commit hooks
	run: pre-commit run --all-files
	- name: Run tests and collect coverage
	run: coverage run -m pytest
	- name: Create coverage report
	run: coverage xml
	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v4
	with:
	verbose: true
	env:
	CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

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