January 2019
Intermediate to advanced
376 pages
8h 49m
English
Content preview from Property-Based Testing with PropEr, Erlang, and ElixirBecome 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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Negative Testing
An interesting aspect of the code and tests we have written so far is that the list of items being bought is generated through the list of supported items. By designing the test case from the price list, there is a lack of tests looking for unexpected use cases. Our tests are positive, happy-path tests, validating that everything is right and good things happen. Negative tests, by comparison, try to specifically exercise underspecified scenarios to find what happens in less happy paths.
Our current properties are good; we don’t want to modify them or make them more complex. Instead, we’ll write a few broad properties that test more general properties of the code and see if the requirements we had in the first place are actually ...
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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.