only allow positive can IDs #895

	name: Tinymovr Studio Lint/Test

	on: [push]

	jobs:
	test-studio:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ["3.9", "3.10"]

	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 flake8
	cd studio/Python
	pip install -e .
	- name: Lint with flake8
	run: \|
	cd studio/Python
	# stop the build if there are Python syntax errors or undefined names
	flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
	- name: Test with unittest
	run: \|
	cd studio/Python
	python -m unittest tests/test_simulation.py

Provide feedback