sample.data.jpa.service.CityRepositoryIntegrationTests.java Source code

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Here is the source code for sample.data.jpa.service.CityRepositoryIntegrationTests.java

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/*
 * Copyright 2012-2013 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 sample.data.jpa.service;

import org.hibernate.envers.AuditReader;
import org.hibernate.envers.AuditReaderFactory;
import org.hibernate.envers.query.AuditQuery;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.IntegrationTest;
import org.springframework.boot.test.SpringApplicationConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import sample.data.jpa.SampleDataJpaApplication;
import sample.data.jpa.config.Transactor;
import sample.data.jpa.domain.City;
import sample.data.jpa.revision.UserRevEntity;
import sample.data.jpa.revision.UserRevisionListener;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import static org.hamcrest.Matchers.greaterThan;
import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertThat;

/**
 * Integration tests for {@link CityRepository}.
 *
 * @author Oliver Gierke
 */
@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = SampleDataJpaApplication.class)
@IntegrationTest
public class CityRepositoryIntegrationTests {

    final static String WRONG_STATE = "Wrong State";
    final static String OXFORDSHIRE_STATE = "Oxfordshire";

    @Autowired
    CityRepository repository;

    @PersistenceContext
    private EntityManager entityManager;

    @Autowired
    private Transactor transactor;

    long cityId;

    @Test
    public void testSaveAndUpdateCity() {
        transactor.perform(() -> {
            addCity();
        });
        transactor.perform(() -> {
            updateCity(cityId);
        });

        transactor.perform(() -> {
            checkRevisions(cityId);
        });

    }

    private void addCity() {
        City city = new City("Oxford", "UK");
        city.setState(WRONG_STATE);
        entityManager.persist(city);
        entityManager.flush();
        cityId = city.getId();
    }

    private void updateCity(long cityId) {
        City updateCity = entityManager.find(City.class, cityId);
        updateCity.setState(OXFORDSHIRE_STATE);
        entityManager.persist(updateCity);
        entityManager.flush();
    }

    private void checkRevisions(long cityId) {
        AuditReader reader = AuditReaderFactory.get(entityManager);

        City city_rev1 = reader.find(City.class, cityId, 1);
        assertThat(city_rev1.getState(), is(WRONG_STATE));

        City city_rev2 = reader.find(City.class, cityId, 2);
        assertThat(city_rev2.getState(), is(OXFORDSHIRE_STATE));
    }

    @Test
    public void testUserRevisions() throws Exception {
        transactor.perform(() -> {
            addCity();
        });
        transactor.perform(() -> {
            checkUsers();
        });
    }

    private void checkUsers() {
        AuditReader reader = AuditReaderFactory.get(entityManager);
        AuditQuery query = reader.createQuery().forRevisionsOfEntity(City.class, false, false);

        //This return a list of array triplets of changes concerning the specified revision.
        // The array triplet contains the entity, entity revision information and at last the revision type.
        Object[] obj = (Object[]) query.getSingleResult();

        //In this case we want the entity revision information object, which is the second object of the array.
        UserRevEntity userRevEntity = (UserRevEntity) obj[1];

        String user = userRevEntity.getUsername();
        assertThat(user, is(UserRevisionListener.USERNAME));

    }

}