add flexible terminal string formatter #77

	name: Unit tests

	on:
	push:
	branches:
	- main

	jobs:

	test:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v1
	with:
	fetch-depth: 1

	- name: Set up Python 3.9
	uses: actions/setup-python@v2
	with:
	python-version: 3.9

	- name: Install Poetry
	uses: snok/install-poetry@v1

	- name: Cache Poetry virtualenv
	uses: actions/cache@v1
	id: cache
	with:
	path: ~/.virtualenvs
	key: poetry-${{ hashFiles('**/poetry.lock') }}
	restore-keys: \|
	poetry-${{ hashFiles('**/poetry.lock') }}
	- name: Install dependencies
	run: poetry install
	if: steps.cache.outputs.cache-hit != 'true'

	- name: Run tests with pytest
	run: poetry run pytest

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