add transformer functions and mappers #24

	# This workflow will install Python dependencies, run tests and lint with a single version of Python
	# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

	name: Python unit tests

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]
	workflow_dispatch:

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.9]


	steps:
	- name: Checkout
	uses: actions/checkout@v2
	with:
	submodules: recursive
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install Poetry
	uses: snok/install-poetry@v1
	with:
	virtualenvs-create: true
	virtualenvs-in-project: true
	- name: Cache Poetry virtualenv
	id: cache
	uses: actions/cache@v2
	with:
	path: .venv
	key: venv-${{ runner.os }}-#{{ hashFiles('**/poetry.lock') }}
	- name: install pip
	run: poetry run python -m pip install --upgrade pip
	- name: Install
	if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
	run: poetry install --no-interaction
	- name: Test with pytest
	run: \|
	source .venv/bin/activate
	pytest
	- name: flake8 linter
	run: \|
	source ./.venv/bin/activate
	python -m flake8 --count --max-complexity 10 --ignore E501,W503 --show-source --statistics --exclude ./.venv .
	- name: Run mypy
	run: \|
	source ./.venv/bin/activate
	pip install mypy
	mypy --install-types --non-interactive --namespace-packages

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