Using @JpaTest for Testing JPA Layers in Spring Boot Applications
Introduction
Testing is an integral part of any application development process. If you are building a Spring Boot application that uses JPA (Java Persistence API) for database interactions, you’ll need an effective way to test your data layer. One such way is to leverage @JpaTest, a specialized test annotation that simplifies database testing within the Spring Boot ecosystem. In this post, we will explore the utility of @JpaTest, walk through some code examples, and discuss some best practices.
Introduction to JPA and @JpaTest
Java Persistence API (JPA) is a Java specification for accessing, persisting, and managing data between Java objects and a relational database. Part of the Java EE (Enterprise Edition) and also usable in Java SE (Standard Edition), JPA is widely considered a cornerstone for any enterprise-level Java application that involves a relational database. It aims to solve the problem of object-relational impedance mismatch, which is essentially the complications that arise when trying to map objects to tables in a database and vice versa.
The Underpinnings of JPA
JPA operates as an abstraction layer on top of Java JDBC (Java Database Connectivity). While JDBC focuses on…
