Recently, I was working on instrumenting one of our recurring cron jobs to send runtime duration data to Graphite. To test this locally, I would need Graphite installed. Here are three…
In some of our apps, we use Cassandra in our “unit tests”, similar in style to how a Rails or Django app does unit testing. We originally tried to avoid…
It seems fitting to talk about date time objects on leap day! We use the awesome python package arrow in our codebase for convenient and developer friendly manipulation of datetime objects. Although…
At Jana, we have invested time and effort in to our Continuous Deployment infrastructure enabling us to deploy our server side changes more than 10 times a day. The faster we can accomplish each of those tasks, the more often we can deploy to production. This post discussing improving integration testings by remove unnecessary sleep time.
I talked about refactoring large areas of code in my previous post: Refactoring with Color. It’s easy to make hand-wavey statements like “write shorter, simpler methods”, which is good guidance,…
Every code base has its dark corners where methods are too long, and the logic is hard to follow. Let’s not look to place blame on the engineers that came…
I’m a big fan of Red/Green Test Driven Development. A critical component to adopting TDD is fast, automatic feedback from your unit tests. In the Ruby world, I used tools such…
Having earned most of my TDD experience in the Ruby world, I became very used to writing unit tests in RSpec. Jana’s API is built in Python with Flask, and…
Good unit tests exercise the inputs, interactions, and outputs of a system. In simple cases, testing a function can be as simple as invoking the it with a value, and…
