added pytest to the GH action #30

	# This workflow will install Python dependencies, run tests and lint with a single version of Python
	# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python

	name: Install and run IMPSY

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

	permissions:
	contents: read

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v3
	with:
	python-version: "3.11"
	- uses: abatilo/actions-poetry@v2
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	poetry install
	- name: Lint with flake8
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	poetry run flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	poetry run flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
	- name: Run tests.
	run: \|
	poetry run pytest
	- name: Run the main file just to prove it works.
	run: \|
	poetry run ./start_impsy.py --help
	- name: Run the test-mdrnn command to see that it works.
	run: \|
	poetry run ./start_impsy.py test-mdrnn

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