tests

update how we set the matplotlib format #462

	name: tests

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

	jobs:
	canceller:
	runs-on: ubuntu-24.04
	steps:
	- name: cancel previous runs
	uses: styfle/cancel-workflow-action@0.12.1
	with:
	access_token: ${{ github.token }}

	tests:

	runs-on: ${{ matrix.os }}
	defaults:
	run:
	shell: bash
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-24.04, windows-2022, macos-14]
	python-version: ["3.12", "3.14"]
	env:
	OS: ${{ matrix.os }}
	PYTHON: ${{ matrix.python-version }}

	steps:
	- name: checkout
	uses: actions/checkout@v3
	with:
	submodules: true

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

	- name: Install the latest version of uv
	uses: astral-sh/setup-uv@v7
	with:
	activate-environment: true
	version: "latest"
	python-version: ${{ matrix.python }}

	- name: Install python dependencies
	run: \|
	# uv sync install the project into the venv
	# and the -p installs the correct Python
	# version if it is not the version in $PATH
	uv sync -p ${{ matrix.python-version }} --frozen --group test
	demes -h

	- name: run pytest
	run: \|
	uv run -m pytest -n auto \
	--cov=demes --cov-report=term-missing --cov-report=xml -v tests

	- name: upload coverage report to codecov
	uses: codecov/codecov-action@v5
	with:
	token: ${{ secrets.CODECOV_TOKEN }}
	fail_ci_if_error: true
	env_vars: OS,PYTHON

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