Allow invoice subclasses to explicitly declare their exported columns and column names #205

	name: Unit tests
	on:
	push:
	pull_request:

	jobs:
	run-unit-tests:
	name: Run unit tests
	runs-on: ubuntu-latest
	steps:
	- name: Check out code
	uses: actions/checkout@v3

	- name: Set up python
	uses: actions/setup-python@v4
	with:
	python-version: '3.10'

	- name: Install dependencies
	run: \|
	pip install -r requirements.txt

	- name: Run unit tests
	run: \|
	python -m unittest process_report/tests/unit_tests.py

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