I'm using Dropwizard framework with JDBI and h2-in-memory for my test purposes. Also I've written my DAOs, and now I want to test them with unit tests. I came along the DBUnit which seem to fit my requirements.
But how to integrate it with JDBI and fill it with test data?
I implemented it like this:
I created a base dao class that sets up my DW environment to build a DBI instance for me. This looks like that:
@BeforeClass
public static void setup() {
env = new Environment( "test-env", Jackson.newObjectMapper(), null, new MetricRegistry(), null );
dbi = new DBIFactory().build( env, getDataSourceFactory(), "test" );
dbi.registerArgumentFactory(new JodaDateTimeArgumentFactory());
dbi.registerMapper(new JodaDateTimeMapper(Optional.absent()));
}
static DataSourceFactory getDataSourceFactory()
{
DataSourceFactory dataSourceFactory = new DataSourceFactory();
dataSourceFactory.setDriverClass( "org.h2.Driver" );
dataSourceFactory.setUrl( "jdbc:h2:mem:testDb" );
dataSourceFactory.setUser( "sa" );
dataSourceFactory.setPassword( "" );
return dataSourceFactory;
}
public static DBI getDbi() {
return dbi;
}
public static Environment getEnvironment() {
return env;
}
Not this will create a Datasource for you pointing to your in-memory database.
No in the actual test you can use the DBI instance to create your DAOs before the test:
DaoA dao;
DaoB otherDao;
@Before
public void setupTests() throws IOException {
super.setupTests();
dao = dbi.onDemand(DaoA.class);
otherDao = dbi.onDemand(DaoB.class);
}
With this your good to go and you can start testing. Hope that helps.
Artur
Edit for init:
My tests initialise themselves as well. For that I use dbi directly to execute sql scripts. For example, a test is associated with a test1.sql script that is a test classpath resource. In that case, all I need to do is read that script and run it before the test. For example like this:
StringWriter writer = new StringWriter();
InputStream resourceStream = this.getClass().getResourceAsStream("/sql/schema.sql");
if(resourceStream == null ) {
throw new FileNotFoundException("schema not found");
}
IOUtils.copy(resourceStream, writer);
Handle handle = null;
try {
handle = dbi.open();
handle.execute(writer.toString());
handle.commit();
} finally {
handle.close();
if(resourceStream != null) {
resourceStream.close();
}
writer.close();
}
