In this tutorial, we'll take a look at how to perform Unit Testing on Spring Boot REST APIs with examples, using JUnit, Mockito and MockMVC. Find out carefully. It will help your projects complete quickly.
Testing the system is an important phase in a Software Development Life Cycle (SDLC). Testing promotes code reliability, robustness, and ensures high-quality software delivered to clients if implemented correctly.
Testing has been given more importance ever since Test-Driven Development (TDD) has become a prominent process in developing software. Test-driven development entails converting requirements into test cases and using these test cases to gatekeep code quality. Code will be considered unacceptable if it fails any of the test cases declared in a system, and the more test cases that cover product requirements, the better. The codebase is lengthened considerably but reinforces the fact that the system meets the given requirements.
REST APIs are usually rigorously tested during integration testing. However, a good developer should test REST endpoints even before integration in their Unit Tests, since they are a vital part of the code since it's the sole access point of every entity wanting to make use of the services in the server.
This guide will demonstrate how to implement unit tests for REST APIs in a Spring Boot environment. This article focuses on testing the business layer which consists of the APIs, endpoints, and controllers within the codebase.
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