ProjectDAO with EntityManagerFactory dependency

ProjectDAOImpl.java

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Repository;

import javax.persistence.*;
import java.util.List;

@Repository("projectDAO")
public class ProjectDAOImpl implements ProjectDAO {
    @PersistenceUnit
    private EntityManagerFactory entityManagerFactory;

    @Autowired(required = true)
    public ProjectDAOImpl(@Qualifier("entityManagerFactory") EntityManagerFactory entityManagerFactory) {
        this.entityManagerFactory = entityManagerFactory;
    }

    @Override
    public Project save(Project project) {
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        try {
            entityManager.getTransaction().begin();
            entityManager.persist(project);
            entityManager.getTransaction().commit();
            return project;
        }
        finally {
            if (entityManager != null) {
                entityManager.close();
            }
        }
    }
}

ProjectDAOImplTest.java

import org.junit.Before;
import org.junit.Test;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityTransaction;
import javax.persistence.Query;

import static org.mockito.Mockito.*;

public class ProjectDAOImplTest {
    private Project project;
    private ProjectDAOImpl projectDAO;
    private EntityManager entityManager;

    @Before
    public void setUp() {
        project = new Project(0, "My Project", "description", "image/path",true,"image/path","summary");
        entityManager = mock(EntityManager.class);
        EntityManagerFactory entityManagerFactory = mock(EntityManagerFactory.class);
        when(entityManagerFactory.createEntityManager()).thenReturn(entityManager);
        projectDAO = new ProjectDAOImpl(entityManagerFactory);
    }

    @Test
    public void shouldSaveAProject() {
        EntityTransaction transaction = mock(EntityTransaction.class);
        when(entityManager.getTransaction()).thenReturn(transaction);

        projectDAO.save(project);

        verify(entityManager).persist(project);
        verify(entityManager).close();
        verify(transaction).begin();
        verify(transaction).commit();
    }
}