fix unclosed resource issue #3

	name: CI

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	test:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout repository
	uses: actions/checkout@v2

	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: '3.12'

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

	- name: Run tests
	run: \|
	python -m unittest discover -s tests -v

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