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In software development, ensuring the quality and proper functioning of our applications is essential. One of the best ways to achieve this is by implementing testing. Although there is no single type of test, this time we will focus on unit tests.
Unit testing focuses on testing individual components of the code, such as functions or methods, in isolation. The goal is to ensure that each unit of code works properly on its own. They are the most abundant in an application.
· Insulation: We test specific parts of the code without external dependencies.
· Speed: They are quick to execute and allow immediate feedback.
· Maintainability: They facilitate the identification and correction of errors in individual components.
To avoid attaching to dependencies and maintain isolation in unit tests, we usually use mocks. A mock is a simulated object that mimics the behavior of real dependencies.
Implementing different types of tests in our software projects is essential to ensure the quality and proper functioning of our applications. Unit, acceptance and integration tests complement each other to provide comprehensive and robust coverage. It is also important to remember that we should not exceed the number of tests, and a good way to know if we have the right number is to imagine a pyramid, where the base is the unit tests, the center are the integration tests, and the top are the acceptance tests.
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