Running Flask Tests without installing the app

| ci | programming | python |

The Flask Docs have a great section for testing. However they assume that you have the app installed with pip install -e . which I almost never do. (Maybe I should start?) I have had trouble with this approach. So one little hack to inject your app into the searchable python path is to do something like this:

export BLOG_PATH=$(pwd) && python tests/blog_tests.py
We use \$(pwd) so that this will "just work" no matter which computer you run it on (i.e. test, dev, other persons dev) Then in yourtests/blog_tests.py file you import your flask app like this:
sys.path.insert(0, os.environ.get('BLOG_PATH'))
from blog.blog import app, init_db
You can see the full details here: https://circleci.com/gh/levlaz/blog My biggest issue with installing the app in a traditional sense is that when I run it with apache mod_wsgi it does not seem to actually copy over the right folders and apache is not able to find templates or static files. So that sucks, and I am probably doing something wrong. But this approach works more or less no matter what so sometimes a hack is better than derping around with no solution (as I did for six hours yesterday).

Thank you for reading! Share your thoughts with me on bluesky, mastodon, or via email.

Check out some more stuff to read down below.

Most popular posts this month

Recent Favorite Blog Posts

This is a collection of the last 8 posts that I bookmarked.

Articles from blogs I follow around the net

Weekend Update #12

The weekly update, plus bits and bobs that caught my attention this week.

via ODonnellWeb March 30, 2025

Katherine Yang

Artist, developer, crafter

via Uses This March 30, 2025

"An off switch? She'll get years for that."

Vizio: "Please enjoy falling asleep to these calming nature scenes, occasionally punctuated with unhinged fascist rants. As a treat." I left the tv idle while I went to the other room to play with my dog. After about a half an hour, I started heari…

via jwz March 29, 2025

Generated by openring