![]() Once you understand what unit testing is, I think it's fair to say the majority of developers think they're an excellent idea. In my opinion, handling this isolation challenge is the most difficult part of writing unit tests in NestJS, so we'll cover plenty of examples in this tutorial. The unit test should also be isolated - meaning the test doesn't rely on other dependencies to work. Implemented correctly, unit testing can have an excellent return on investment.īy adding unit tests, you're investing in your project so that the future version of yourself (or other colleagues working on the project) can operate with speed and confidence as you add new features or refactor existing code. Automating NestJS unit tests in a CI pipeline with Github ActionsĪ unit test is an automation you have in your code that verifies a small piece of behavior.Example: Mocking HTTP requests in NestJS.
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