October 2019
Intermediate to advanced
358 pages
8h 22m
English
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Using Ecto Sandbox for Test Isolation and Concurrency
We mentioned that DataCase uses some aliases, imports, and macros to give us the functionality our tests need. One of the features that file provides is the Ecto Sandbox. The role of the sandbox is to undo all changes we have done to the database during our tests. These database transaction rollbacks give us test isolation.
The way the sandbox operates is quite efficient too: instead of deleting all of the data once the suite finishes, which would be expensive, it just wraps each test in a transaction. Once the test is done, the transaction is rolled back and everything behaves as if the data was never there.
While a database sandbox is commonplace in many web frameworks or database libraries, ...
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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.