Error message presented when user tries to create an empty Dev Env. #196

	name: Unittest Action
	on: [pull_request]

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- name: checkout repo content
	uses: actions/checkout@v2
	- name: Install dependencies
	run: \|
	pip install --user poetry==1.4.2
	poetry install

	- name: execute tests
	run: \|
	source $(poetry env info --path)/bin/activate
	python -m pytest tests

	- name: coverage
	run: \|
	source $(poetry env info --path)/bin/activate
	python -m pytest --cov=dem tests/

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