August 2018
Beginner
160 pages
4h 8m
English
Content preview from pytest Quick Start Guide
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Why spend time writing tests?
Testing programs manually is natural; writing automated tests is not.
Programmers use various techniques when learning to code or when dabbling in new technologies and libraries. It is common to write short snippets, follow a tutorial, play in the REPL, or even use Jupyter (http://jupyter.org/). Often, this involves manually verifying the results of what is being studied by using print statements or plotting graphics. This is easy, natural, and a perfectly valid way of learning new things.
This pattern, however, should not be carried over to professional software development. Professional software is not simple; on the contrary, it is usually very complex. Depending on how well designed a system is, parts can ...
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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.