TIL: Writing pytest tests against tools written with argparse

8th January 2022

TIL Writing pytest tests against tools written with argparse — I usually build command-line tools using [Click](https://click.palletsprojects.com/) (and my [click-app](https://github.com/simonw/click-app) cookiecutter template), which includes a really nice [set of tools](https://click.palletsprojects.com/en/8.0.x/testing/) for writing tests.