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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Basic Custom Generators
Once you discover that your data generation needs to be retargeted to better explore a problem space, plenty of constructs are available. We’ve seen how to use oneof(Generators) to impact our ability to get a more specific result set, but other more flexible tools exist to get even more control. In this section, we’ll see the basic building blocks of writing custom generators.
Those building blocks are controlling the size and amount of generated data, applying transformation to the generators themselves, restricting and filtering out some data from your generators, and finally, playing with probabilities when none of the previous approaches work.
Resizing Generators
The first and simplest thing to do with generators is ...
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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.