June 2022
Intermediate to advanced
130 pages
2h 45m
English
Content preview from Programmer Passport: Elixir
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Built-in Testing
Often, new programming languages lack the robust tools that mature languages have. Almost from the beginning, Elixir was created with a full set of tools. This tooling has accelerated Elixir’s adoption. Two of the most critical parts of that infrastructure are tests and tasks.
The Elixir tooling includes a built-in test environment called ExUnit. Believe it or not, you’ve already created your first test. mix new created it for you. Let’s run that test now:
| | [hello] ➔ mix test |
| | Compiling 1 file (.ex) |
| | Generated hello app |
| | .. |
| | |
| | Finished in 0.02 seconds |
| | 1 doctest, 1 test, 0 failures |
We ran our test, and got two dots. Let’s see what’s making all of the noise:
| | defmodule HelloTest do |
| | use ExUnit.Case |
| | doctest Hello |
| | |
| |
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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.