October 2019
Intermediate to advanced
358 pages
8h 22m
English
Content preview from Programming Phoenix 1.4Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Understanding ExUnit
When you’re testing with Phoenix, the framework builds default tests for you that help you keep the basic structure of your tests straight. Those templates even go a long way toward showing you how to build tests to cover your MVC code. Still, it’s best to start at the beginning: a walkthrough of using ExUnit, Elixir’s testing framework. Let’s take a look at a basic Elixir test, one without Phoenix involved at all.
ExUnit has three main macros. The setup macro specifies some setup code that runs once before each test. The test macro defines a single isolated test. The assert macro specifies something we believe to be true about our code. If the assertion is true, the test passes. If it’s false, the test fails. Either way, ...
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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.