Running Flask Tests without installing the app

April 8, 2017 | 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.

Rewrote my blog with Zine from Drew DeVault's blog
A eulogy for Vim from Drew DeVault's blog
Pluralistic: AI "journalists" prove that media bosses don't give a shit (11 Mar 2026) from Pluralistic: Daily links from Cory Doctorow
Avi Alkalay: Uniqlo T-Shirt Bash Script Easter Egg from Fedora People
Offline 23 hours a day from Derek Sivers blog
Pluralistic: California can stop Larry Ellison from buying Warners (28 Feb 2026) from Pluralistic: Daily links from Cory Doctorow
On Alliances from Smashing Frames
Acting ethically in an imperfect world from Smashing Frames

Articles from blogs I follow around the net

“Plain text has been around for decades and it’s here to stay.”

There’s a category of “plain text” or “ASCII” diagramming and UI design tools: Mockdown – works immediately on the web, even on mobile Wiretext – works on the web, but desktop only Monodraw – a Mac app I believe these are used by people who prefer intentio...

via Unsung April 24, 2026

Pluralistic: A free, open visual identity for enshittification (24 Apr 2026)

Today's links A free, open visual identity for enshittification: No mere poop emoji! Hey look at this: Delights to delectate. Object permanence: RIAA v little girl; Portal turret Easter egg; Atari v indie games; Chabon's Phantom Tollbooth intro; The 0.1%;...

via Pluralistic: Daily links from Cory Doctorow April 24, 2026

Nicolas Solerieu

This week on the People and Blogs series we have an interview with Nicolas Solerieu, whose blog can be found at slrncl.com/blog. Tired of RSS? Read this in your browser or sign up for the newsletter. People and Blogs is supported by the "One a Month" club...

via Manuel Moreale — Everything Feed April 24, 2026

Generated by openring