example.springdata.jpa.basics.BasicFactorySetup.java Source code

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/*
 * Copyright 2013-2014 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package example.springdata.jpa.basics;

import static org.junit.Assert.*;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.springframework.data.jpa.repository.support.JpaRepositoryFactory;

import example.springdata.jpa.simple.SimpleUserRepository;
import example.springdata.jpa.simple.User;

/**
 * Test case showing how to use the basic {@link GenericDaoFactory}
 * 
 * @author Oliver Gierke
 */
public class BasicFactorySetup {

    private static final EntityManagerFactory factory = Persistence.createEntityManagerFactory("jpa.sample.plain");

    private SimpleUserRepository userRepository;
    private EntityManager em;

    private User user;

    /**
     * Creates a {@link SimpleUserRepository} instance.
     * 
     * @throws Exception
     */
    @Before
    public void setUp() {

        em = factory.createEntityManager();

        userRepository = new JpaRepositoryFactory(em).getRepository(SimpleUserRepository.class);

        em.getTransaction().begin();

        user = new User();
        user.setUsername("username");
        user.setFirstname("firstname");
        user.setLastname("lastname");

        user = userRepository.save(user);

    }

    /**
     * Rollback transaction.
     */
    @After
    public void tearDown() {

        em.getTransaction().rollback();
    }

    /**
     * Showing invocation of finder method.
     */
    @Test
    public void executingFinders() {

        assertEquals(user, userRepository.findByTheUsersName("username"));
        assertEquals(user, userRepository.findByLastname("lastname").get(0));
        assertEquals(user, userRepository.findByFirstname("firstname").get(0));
    }
}