Pragmatic Unit Testing in Java with JUnit, 3rd Edition

Writing Integration Tests

The QuestionRepository class talks to an H2 database using the Java Persistence API (JPA). You might correctly guess that this data class is used in many places throughout the application and that testing each of those places will require the use of a test double.

Here’s the code for the class:

utj3-iloveyouboss2/01/src/main/java/iloveyouboss/persistence/QuestionRepository.java

import iloveyouboss.domain.BooleanQuestion;
import iloveyouboss.domain.PercentileQuestion;
import iloveyouboss.domain.Persistable;
import iloveyouboss.domain.Question;
import jakarta.persistence.EntityManager;
import jakarta.persistence.EntityManagerFactory;
import jakarta.persistence.Persistence;

import ...