Tests

Add Windows 11 ARM to CI workflow #60

	name: Tests

	on:
	push:
	branches: [main]
	pull_request:

	concurrency:
	group: tests-${{ github.ref }}
	cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}

	jobs:
	tests:
	name: ${{ matrix.os }} / Python ${{ matrix.python-version }}
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false
	matrix:
	include:
	- os: ubuntu-22.04
	python-version: "3.9"
	py-arch: "x64"
	- os: ubuntu-22.04
	python-version: "3.12"
	py-arch: "x64"
	- os: macos-14
	python-version: "3.12"
	py-arch: "arm64"
	- os: windows-11-arm
	python-version: "3.12"
	py-arch: "arm64"

	# Make PyTorch wheels discoverable to all pip calls (incl. tox-created venvs)
	env:
	PIP_EXTRA_INDEX_URL: https://download.pytorch.org/whl/cpu
	# Ensure tox passes env vars into its testenvs:
	TOX_TESTENV_PASSENV: PIP_INDEX_URL PIP_EXTRA_INDEX_URL

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

	- name: Setup Python
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	architecture: ${{ matrix.py-arch }}

	- name: Debug runner
	shell: bash
	run: \|
	python -V
	echo "RUNNER_OS=$RUNNER_OS"
	echo "ImageOS=${ImageOS:-}"
	echo "PROCESSOR_ARCHITECTURE=${PROCESSOR_ARCHITECTURE:-}"

	- name: Upgrade pip + install tox
	run: \|
	python -m pip install --upgrade pip
	python -m pip install tox

	# Optional: prove PyTorch resolves via the PyTorch index on Win11 ARM
	- name: (Sanity) Resolve torch wheel
	if: runner.os == 'Windows'
	run: python -m pip install --dry-run "torch>=2.1"

	- name: Run tox
	run: tox

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