added postgres #50

	name: Tests

	on:
	pull_request:
	branches: [ master ]

	jobs:

	test:
	name: Run Tests
	runs-on: ubuntu-latest

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

	- name: Set up Python 3.8
	uses: actions/setup-python@v1
	with:
	python-version: 3.8

	- name: Install Poetry
	uses: snok/install-poetry@v1
	with:
	version: 1.2.2
	virtualenvs-create: true
	virtualenvs-in-project: false
	virtualenvs-path: ~/.virtualenvs
	installer-parallel: true

	- 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: Test with pytest
	run: poetry run pytest .

Provide feedback