The Types of Testing

Overview

There are several types of testing in programming, each on a different level of complexity and size. Unit tests stand on one side of the spectrum. They check one isolated piece of code, a class, or a function. They’re very fast and almost always automated. On the other side of the spectrum, end-to-end tests run against entire applications. They’re slow and, more often, manual. Between these two levels, we have component and integration tests, which are a level up from the isolated unit tests but still only verify part of the system, mocking some ...