Add test that Sigma `__post_init__` works correctly #41

	name: Tests

	on:
	push:
	paths:
	- '**.py'
	pull_request:
	paths:
	- '**.py'

	jobs:
	run_tests:
	name: Run tests
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	python-version: ["3.10", "3.11", "3.12"]
	steps:
	- uses: actions/checkout@v4
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install
	run: \|
	python -m pip install --upgrade pip
	python -m pip install .[test]
	- name: Test
	run: \|
	pytest --cov=pyloidal --cov-report=xml --cov-report=term -vv ./tests
	- name: Upload coverage artifacts
	uses: actions/upload-artifact@v4
	with:
	name: ${{ format('coverage-python-{0}', matrix.python-version) }}
	path: coverage.xml

	code_coverage:
	name: Code coverage
	needs: run_tests
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	- name: Download coverage report
	uses: actions/download-artifact@v4
	with:
	name: "coverage-python-3.10"
	path: coverage.xml
	- name: Upload coverage reports to Codecov
	uses: codecov/codecov-action@v3
	env:
	CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

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