Merge pull request #665 from minrk/oauth-allow-none #683

	# This is a GitHub workflow defining a set of jobs with a set of steps.
	# ref: https://docs.github.com/en/actions/learn-github-actions/workflow-syntax-for-github-actions
	#
	name: Tests

	on:
	pull_request:
	paths-ignore:
	- "docs/**"
	- ".github/workflows/*.yaml"
	- "!.github/workflows/test.yaml"
	push:
	paths-ignore:
	- "docs/**"
	- ".github/workflows/*.yaml"
	- "!.github/workflows/test.yaml"
	branches-ignore:
	- "dependabot/**"
	- "pre-commit-ci-update-config"
	tags: ["**"]
	workflow_dispatch:

	env:
	OAUTH2_TOKEN_URL: "token_url"
	OAUTH2_USERDATA_URL: "userdata_url"

	jobs:
	test:
	runs-on: ubuntu-22.04
	timeout-minutes: 10

	strategy:
	# Keep running even if one variation of the job fail
	fail-fast: false
	matrix:
	python:
	- "3.8"
	- "3.9"
	- "3.10"
	- "3.11"
	include:
	- python: "3.9"
	oldest_dependencies: oldest_dependencies

	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-python@v4
	with:
	python-version: "${{ matrix.python }}"

	- name: Install Python dependencies
	run: \|
	pip install ".[test]"
	pip list

	- name: Downgrade to oldest dependencies
	if: matrix.oldest_dependencies != ''
	# take any dependencies in requirements.txt such as jupyterhub>=1.2 and
	# transform them to jupyterhub==1.2 so we can run tests with the
	# earliest-supported versions
	run: \|
	cat requirements.txt \| grep '>=' \| sed -e 's@>=@==@g' > oldest-requirements.txt
	pip install -r oldest-requirements.txt
	pip list

	- name: Run tests
	run: \|
	pytest

	# GitHub action reference: https://github.com/codecov/codecov-action
	- uses: codecov/codecov-action@v3

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