CI: run on all three: ubuntu-latest, macos-latest, windows-latest #144

	name: Tests

	on:
	schedule:
	- cron: '42 9 * * 2' # At 9:42 UTC on Tuesday
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	build:
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-latest, macos-latest, windows-latest]
	# pick lower and upper versions only
	python-version: ["3.9", "3.12"]

	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0

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

	- name: Cache pip packages
	uses: actions/cache@v4
	with:
	key: ${{ matrix.python-version }}
	path: \|
	~/.cache/pip

	- name: Upgrade pip
	shell: bash
	run: \|
	python -m pip install pip --upgrade --disable-pip-version-check

	- name: Run tests with required packages
	run: \|
	pip install -e .[test]
	pytest -v

	- name: Run tests with optional packages
	run: \|
	pip install -e .[optional]
	# Avoid: Matplotlib is building the font cache; this may take a moment
	python -c "from matplotlib.font_manager import FontManager; FontManager()"
	pytest -n2 -v --cov

	- name: Run doctest
	if: matrix.python-version == '3.12'
	run: \|
	pytest -v gridit --doctest-modules

	- name: Run tests with older packages
	if: matrix.python-version == '3.9'
	run: \|
	pip install "pandas<2.0" "geopandas<1.0" "fiona<1.10" "shapely<2.0" "numpy<2.0"
	pytest -v -n2 --cov --cov-append

	- name: Upload coverage reports to Codecov
	uses: codecov/codecov-action@v4
	with:
	fail_ci_if_error: true
	token: ${{ secrets.CODECOV_TOKEN }}

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