Revert "Remove Python 3.9, add 3.12" #226

	name: Test

	on: [push, pull_request]

	jobs:
	build:
	name: ${{ matrix.name }}-py${{ matrix.python-version }}
	runs-on: ${{ matrix.os }}

	strategy:
	fail-fast: false
	matrix:
	name: [ubuntu, windows, macos]
	python-version: ["3.9", "3.10", "3.11"]

	include:
	- name: ubuntu
	os: ubuntu-latest

	- name: windows
	os: windows-latest

	- name: macos
	os: macos-latest

	steps:
	- uses: actions/checkout@v2
	- name: Install Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install (Linux)
	if: runner.os == 'Linux'
	run: \|
	python -m pip install --upgrade pip
	pip install .[tests]
	- name: Install (macOS / Windows)
	if: runner.os == 'macOS' \|\| runner.os == 'Windows'
	run: \|
	python -m pip install --upgrade pip
	pip install pytest
	pip install numpy # cftime requires numpy already during setup
	pip install .

	- name: Lint with flake8 (Linux)
	if: runner.os == 'Linux' && matrix.python-version == '3.8'
	continue-on-error: true
	run: \|
	pip install flake8
	flake8 . --statistics \|\| echo "::error::Check flake8 output for errors"

	- name: Testfiles Setup
	run: \|
	git clone --depth=1 https://github.com/atmtools/typhon-testfiles.git

	- name: Test (Linux / macOS)
	if: runner.os == 'Linux' \|\| runner.os == 'macOS'
	run: \|
	export TYPHONTESTFILES=$PWD/typhon-testfiles
	pytest --pyargs typhon
	- name: Test (Windows)
	if: runner.os == 'Windows'
	run: \|
	$Env:HDF5_DISABLE_VERSION_CHECK = 1
	$Env:TYPHONTESTFILES = Join-Path $pwd "typhon-testfiles"
	pytest --pyargs typhon

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