July 2019
Intermediate to advanced
310 pages
7h 26m
English
Content preview from Programming ElmBecome 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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Chapter 9Test Elm Applications
Until now, you have focused on building Elm applications. You can create your own applications with the Elm Architecture, scale applications with powerful patterns, debug and deploy applications rapidly, and integrate Elm with existing JavaScript projects. Elm’s type safety makes most of this possible with no bugs. But, bugs in your application’s business logic can still appear.
In this chapter, you will address this dilemma by testing Elm code. Testing ensures your code behaves as expected and keeps bugs from creeping in. You will use test-driven development and the elm-test package to create and test a date library. Next, you will test certain properties of the library without worrying about specific test cases ...
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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.