com.github.patrickianwilson.blogs.testing.induction.repositories.MySQLURLRepositoryTests.java Source code

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Here is the source code for com.github.patrickianwilson.blogs.testing.induction.repositories.MySQLURLRepositoryTests.java

Source

package com.github.patrickianwilson.blogs.testing.induction.repositories;

import java.util.List;
import static org.junit.Assert.*;
import static org.hamcrest.CoreMatchers.*;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.hibernate.exception.DataException;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.service.ServiceRegistryBuilder;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.github.patrickianwilson.blogs.testing.induction.repositories.entities.UrlServiceEntity;
import com.github.patrickianwilson.blogs.testing.induction.service.entity.UrlDbEntity;

/*
 The MIT License (MIT)
    
 Copyright (c) 2014 Patrick Wilson
    
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
    
 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.
    
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 */

/**
 * This class represents the base case test for the MY SQL database interactions (which can't be mocked
 * safely.
 *
 * I actually wrote this test case before writing the repository implementation and associated service calls as I
 * find it useful to really understand the thirdparty API edge cases before baking anything into code.
 *
 * Test Plan.
 *
 * 1.) Is the configuration correct - IE: can the class under test actually be constructed?
 * 2.) Do a simple persist and retrieve success case (insert followed by retreival)
 * 3.) the "entity not found" case - lookup a URL long form that doesn't yet exist in the database - this is a common case and should not throw errors.
 * 4.) insert a long URL into the database that is over 255 characters (max for that column) - expect an exception
 * 5.) insert a short URL into the database that is over 40 characters (max for the shortform column) - expect an exception.
 *
 */
public class MySQLURLRepositoryTests {

    private MySQLURLRepository underTest = new MySQLURLRepository();

    private Configuration cfg;
    private ServiceRegistry serviceRegistry;
    private SessionFactory sessionFactory;

    @Before()
    public void setup() {
        cfg = new Configuration().configure();
        serviceRegistry = new ServiceRegistryBuilder().applySettings(cfg.getProperties()).buildServiceRegistry();

        sessionFactory = cfg.buildSessionFactory(serviceRegistry);
    }

    @After
    public void cleanupDatabase() {
        Session s = sessionFactory.openSession();
        Transaction tx = s.beginTransaction();
        try {
            List allEntities = s.createCriteria(UrlDbEntity.class).list();

            for (Object entity : allEntities) {
                s.delete(entity);
            }
        } finally {
            tx.commit();
            s.close();
        }

    }

    /**
     * likely this would fail with an exception if there was a problem
     */
    @Test
    public void canRepositoryByInstantiated() {
        assertNotNull("Under Test was not instantiated for some reason.", underTest);
    }

    @Test
    public void persistAndRetrieveCase() {
        final String longForm = "http://www.google.com";

        UrlServiceEntity url = new UrlServiceEntity();
        url.setLongForm(longForm);
        url.setShortForm("http://go.og/1");

        underTest.persist(url);

        UrlServiceEntity actual = underTest.findByLongForm(longForm);

        assertThat("The persisted and retrieved url entities are not equal!", actual, is(equalTo(url)));
    }

    @Test
    public void urlNotCachedCase() {
        assertNull("URL was not in database but somehow found an entity.",
                underTest.findByLongForm("http://www.google.com"));

    }

    @Test(expected = DataException.class)
    public void longNameTooManyCharacters() {
        StringBuilder urlString = new StringBuilder("http://www.google.com");
        for (int i = 0; i < (257 - 22 /* base url is 22 chars long. */); i++) {
            urlString.append('a');
        }

        UrlServiceEntity url = new UrlServiceEntity();
        url.setLongForm(urlString.toString());
        url.setShortForm("http://go.og/1");

        underTest.persist(url);
    }

    @Test(expected = DataException.class)
    public void shortNameTooManyCharacters() {
        StringBuilder urlString = new StringBuilder("http://g.co");
        for (int i = 0; i < (46 - 11 /* base url is 11 chars long. */); i++) {
            urlString.append('a');
        }

        UrlServiceEntity url = new UrlServiceEntity();
        url.setLongForm("http://www.google.com");
        url.setShortForm(urlString.toString());

        underTest.persist(url);
    }

}