Refactor towards using a database mutex #66

	name: Test

	on:
	push:
	pull_request:

	permissions:
	contents: read

	jobs:
	ruff-format:
	runs-on: ubuntu-latest
	timeout-minutes: 1
	steps:
	- uses: actions/checkout@v4
	- uses: chartboost/ruff-action@v1
	with:
	version: 0.4.8
	args: 'format --check'

	build:
	runs-on: ubuntu-latest
	name: Python${{ matrix.python-version }}/Django${{ matrix.django-version }}
	strategy:
	matrix:
	python-version: ["3.9", "3.10", "3.11", "3.12"]
	django-version: ["4.2", "5.0"]
	exclude:
	- python-version: "3.9"
	django-version: "5.0"


	steps:
	- uses: actions/checkout@v4

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install "Django~=${{ matrix.django-version }}.0"

	- name: Run Test
	run: \|
	`which django-admin` test post_office --settings=post_office.test_settings --pythonpath=.

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