Make `threads` the default executor (#621) #290

	name: Zarr v3 Tests

	on:
	push:
	branches:
	- "main"
	pull_request:
	workflow_dispatch:

	concurrency:
	group: Tests-${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	test:
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false
	matrix:
	os: ["ubuntu-latest"]
	python-version: ["3.11"]

	steps:
	- name: Checkout source
	uses: actions/checkout@v3
	with:
	fetch-depth: 0

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v3
	with:
	python-version: ${{ matrix.python-version }}
	architecture: x64

	- name: Setup Graphviz
	uses: ts-graphviz/setup-graphviz@v2
	with:
	macos-skip-brew-update: 'true'

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip

	- name: Install
	run: \|
	python -m pip install -e .[test]
	python -m pip install -U git+https://github.com/zarr-developers/zarr-python.git

	- name: Run tests
	env:
	COVERAGE_CORE: sysmon
	run: \|
	if [ "$RUNNER_OS" == "Windows" ]; then
	pytest -v
	else
	pytest -v --cov=cubed --cov-report=term-missing --cov-fail-under=90
	fi
	shell: bash

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