Add example of Mock and DIP #161

	name: Lint

	on:
	push:
	branches:
	- 'main'
	pull_request:
	branches:
	- 'main'

	jobs:
	lint:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Setup Python
	uses: actions/setup-python@v2
	with:
	python-version: "3.11"
	- name: Install test requirements
	run: pip install -r dev-requirements.txt
	- name: Install tdd_workshop
	run: pip install .
	- name: Check black
	run: black --check .
	- name: Check typing
	run: mypy src

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