Encapsulate NFTestAssert class, rewrite tests #27

	---
	name: pytest

	on:
	pull_request:
	branches:
	- main
	jobs:
	pytest:
	runs-on: ubuntu-latest

	timeout-minutes: 15

	steps:
	- uses: actions/checkout@v4
	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: '3.8'
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install .
	- name: Test with pytest
	run: \|
	pytest test \
	--doctest-modules \
	--junitxml=junit/test-results.xml
	- name: Upload pytest test results
	uses: actions/upload-artifact@v3
	with:
	name: test-results.xml
	path: junit/test-results.xml
	if-no-files-found: error
	# Use always() to always run this step to publish test results when
	# there are test failures
	if: ${{ always() }}

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