Add a lint run to check pytest collection works #1

	name: Pytest-collect

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

	jobs:
	pytest-collect:
	name: "Pytest: check test collection"
	runs-on: ubuntu-latest
	steps:
	- name: Clone repo
	uses: actions/checkout@v2
	- name: Set up python
	uses: actions/setup-python@v4
	with:
	python-version: 3.9
	cache: 'pip'
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install pytest
	python -m pip install .[dev]
	- name: "pytest: check test collection"
	run: pytest --collect-only

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