Adding backend interface and numpy backend to Mr Mustard #4

	name: Numpy tests
	on:
	push:
	branches:
	- develop
	pull_request:
	paths:
	- '.github/workflows/tests.yml'
	- 'mrmustard/**'
	- 'tests/**'
	- 'pyproject.toml'
	- 'poetry.lock'
	- 'pytest.ini'

	jobs:
	pytest:
	runs-on: ubuntu-latest
	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true
	env:
	HYPOTHESIS_PROFILE: ci

	steps:
	- name: Checkout repo
	uses: actions/checkout@v3

	- name: Setup python
	uses: actions/setup-python@v4
	with:
	python-version: '3.9'

	- name: Setup Julia
	uses: julia-actions/setup-julia@v1
	with:
	version: 1.9.3

	- name: Install dependencies
	run: \|
	python -m pip install --no-cache-dir --upgrade pip
	pip install --no-cache-dir poetry==1.4.0
	poetry config virtualenvs.create false
	poetry install --extras "ray" --with dev
	julia --project="julia_pkg" -e "using Pkg; Pkg.instantiate()"

	- name: Run tests
	run: python -m pytest tests --backend=numpy -p no:warnings --tb=native

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