Jeremy Satterfield
Coding, Brewing and Tulsa Life

Securing Your Website with Let's Encrypt

This past week I gave a short presentation at the monthly TulsaWebDevs meeting about setting up a secure website using Let's Encrypt. I covered a brief (minimal) overview of how SSL/TLS works and a comparison in the processes of the traditional way to acquire an SSL certificate and acquiring a certificate via the ACME protocol. The slides are now up if you'd like to check them out over on my Presentations page. If you'd like to view my speakers notes simply press `s` while viewing the slideshow in Chrome.

Unit Testing Recursion in Python

Today I finally figured out the solution to a problem I've been trying to solve for a while. It's kind of hacky and maybe a bad idea, but now I know it's possible. The problem has always been that I'd like to test that a function recurses, but not needing it to actually have the recursion execute within to test. Just a unit test to assert that recursion is happening. After a little thought about how Python stores references I came up with this.

Keeping MRO In Mind When Mocking Inherited Methods

So I just spent a couple of hours banging my head on a ridiculous PyMox mocking issue and though I'd share. Here is an example of the existing code.

Mocking a property in Python

Anytime I see someone turning an instance method into a property on a Python object, I always have to step back and rethink whether it's really the right thing to do. While properties certain have valid use cases, I often see them overused and misused. This can result in code that is harder to refactor should you decide you actually do want to accept arguments as well as less straight forward to separate in unit tests.

Class-based Celery Tasks

Recently, I've had to write several complicated Celery tasks. Unfortunately, when doing a complicated process standard task functions can become unwieldy to write, read and unit test. After looking into how Celery tasks actually work, I was able to find a more manageable way of writing these complex tasks.