January 2026
Intermediate to advanced
674 pages
15h 30m
English
Content preview from Rust Web Programming - Third Edition
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14
Unit Testing
We have built our to-do application, and it is working. However, we only know it is working because our operations were simple. We know that in the real world, the logic behind our applications will be more complex with more moving parts. This is where unit testing comes in. Unit testing is essential when your application evolves. In this chapter, we will cover the following:
- The importance of unit testing
- Writing our first unit test
- Testing our core
- Unit testing our networking layer
- Unit testing our data access layer
By the end of this chapter, you will understand the importance of unit testing. You will also be able to write unit tests and mock IO handles such as calls to a database, to test how our code handles different ...
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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.