October 2019
Intermediate to advanced
358 pages
8h 22m
English
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Testing the Information System
To warm up, we’re going to start our tests with our independent caching layer. Since our cache is made up of a standalone genserver, we can test it in isolation. It’s a good place to start because our cache can do two things: fetch and put.
Testing Our Cache
For the most part, testing our cache will work like testing any other service. We’ll create a cache and try some fetches and puts. Then we’ll use asserts to check what actually happened against our expectations. Let’s begin with a few basic tests and then we can handle corner cases for timeouts and shutdown. Shift into the apps/info_sys directory and then make tests/cache_test.exs look like this:
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.