Add datasource access in tests

In my web applications, the datasource is often defined in Tomcat (see here), when I execute my integration tests using JUnit, I don’t need Tomcat, but I need an access to the database, and to the Spring context too.
My solution is to create an abstract test which provides me these features, I use:

• the org.springframework.mock.jndi.SimpleNamingContextBuilder to replace the Tomcat JNDI and bind the datasource;
• and the org.springframework.test.context.junit4.SpringJUnit4ClassRunner to launch automatically the Spring context when I launch my JUnit test.

Doing this, there’s nothing to change in the class I test, I can check the database access, the transaction management or the bean definitions:

package net.classnotfound;
import java.sql.SQLException;
import javax.naming.NamingException;
import oracle.jdbc.pool.OracleDataSource;

import org.junit.BeforeClass;
import org.junit.runner.RunWith;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.mock.jndi.SimpleNamingContextBuilder;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"/integrationTestContext.xml"})
public abstract class AbstractTest {
    
    private static final String PWD = "password";
    private static final String USER = "user";
    private static final String JDBC_URL = "jdbc:oracle:thin:@localhost:1521:classnotfound";
    private static final Logger LOG = LoggerFactory.getLogger(AbstractTest.class); 

    @BeforeClass
    public static void setUpClass() throws Exception {

        OracleDataSource ods = null;
        try {
            ods = new OracleDataSource();
        } catch (SQLException e) {
            LOG.error(null,e);
        }
        ods.setURL(JDBC_URL);
        ods.setUser(USER);
        ods.setPassword(PWD);
        LOG.info("DB connection, URL: {}; user: {}; pwd {}", new String[] {JDBC_URL, USER, PWD});

        SimpleNamingContextBuilder builder = null;
        try {
            builder = SimpleNamingContextBuilder.emptyActivatedContextBuilder();
            builder.bind("java:comp/env/jdbc/applicationDatasource",ods);
        } catch (NamingException e) {
            LOG.error(null,e);
        }
    }
}

And to use it in my test, I just need to extend this class:

public class TestService extends AbstractTest{

    @Autowired
    private MyService myService;
...
}