How to inject PersistenceContext during unit testing?

Question

This is my java class:

public class Finder {
  @PersistenceContext(unitName = \"abc\")
  EntityManager em;
  public boolean exists(int i) {
    return (this.em.f         


        

Answer 1

Create another package-private constructor and add only EntityManager then call the other constructor for default behavior.

@PersistentContext
private EntityManager entityManager;

private ManagementService managementService;

@Autowired
public SomeClass(ManagementService managementService) {
    this.managementService = managementService;
}

SomeClass(ManagementService managementService, EntityManager entityManager) {
    this(managementService);

    this.entityManager = entityManager;
}