November 2023
Intermediate to advanced
277 pages
4h 55m
English
Content preview from FastAPI
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Chapter 12. Testing
A QA engineer walks into a bar. Orders a beer. Orders 0 beers. Orders 99999999999 beers. Orders a lizard. Orders –1 beers. Orders a ueicbksjdhd.
First real customer walks in and asks where the bathroom is. The bar bursts into flames, killing everyone.
Brenan Keller, Twitter
Preview
This chapter discusses the kinds of testing that you would perform on a FastAPI site: unit, integration, and full. It features pytest and automated test development.
Web API Testing
You’ve already seen several manual API testing tools as endpoints have been added:
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HTTPie
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Requests
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HTTPX
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The web browser
And many more testing tools are available:
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Curl is very well known, although in this book I’ve used HTTPie instead for its simpler syntax.
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Httpbin, written by the author of Requests, is a free test server that provides many views into your HTTP request.
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Postman is a full API test platform.
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Chrome DevTools is a rich toolset, part of the Chrome browser.
These can all be used for full (end-to-end) tests, such as those you’ve seen in the previous chapters. Those manual tests have been useful for quickly verifying code just after it’s typed.
But what if a change that you make later breaks one of those earlier manual tests (a regression)? You don’t want to rerun dozens of tests after every code change. That’s when automated tests become important. The rest of this chapter focuses on these, and how to build them with pytest.
Where to Test
I’ve mentioned the varieties ...
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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.