dbunit-plus

---

Simple library to add lot of new features to DbUnit library:

• JUnit Rule / Runner.
• JSON DataSet.
• Integration with Spring (spring TestExecutionListener and spring EmbeddedDatabase).
• Integration with Liquibase.

Installation

<dependency>
    <groupId>com.github.mjeanroy</groupId>
    <artifactId>dbunit-plus</artifactId>
    <version>0.1.1</version>
    <scope>test</scope>
</dependency>

Basics

Run DbUnit test by adding some simple annotations:

package com.github.mjeanroy.repository;

import org.junit.Test;
import org.junit.Rule;
import com.github.mjeanroy.dbunit.core.annotations.DbUnitDataSet;
import com.github.mjeanroy.dbunit.core.annotations.DbUnitInit;
import com.github.mjeanroy.dbunit.core.annotations.DbUnitSetup;
import com.github.mjeanroy.dbunit.integration.junit.DbUnitRule;

@DbUnitDataSet("/dbunit")
@DbUnitInit(sql = "/sql/schema.sql")
public class MyRepositoryTest {

    @Rule
    public DbUnitRule rule = new DbUnitRule();

    @Test
    public void testFind() {
        // Query against dataSet.
    }

    @Test
    @DbUnitDataSet("/dbunit/xml/table1.xml")
    public void testFind() {
        // Query against dataSet.
        // DataSet is defined for this method.
    }
}

Here are the available annotations:

• @DbUnitDataSet: define dataset (or directory containing dataset files) to load (can be used on package, entire class or a method).
• @DbUnitInit: define SQL script to execute before any dataset insertion (can be used on package or entire class).
• @DbUnitSetup: define DbUnit setup operation (can be used on package, entire class or a method).
• @DbUnitTearDown: define DbUnit tear down operation (can be used on package, entire class or a method).

JUnit Runner

If you prefer to use JUnit runner instead of JUnit rule, then:

package com.github.mjeanroy.repository;

import org.junit.Test;
import org.junit.runner.RunWith;
import com.github.mjeanroy.dbunit.core.annotations.DbUnitDataSet;
import com.github.mjeanroy.dbunit.core.annotations.DbUnitInit;
import com.github.mjeanroy.dbunit.core.annotations.DbUnitSetup;
import com.github.mjeanroy.dbunit.integration.junit.DbUnitJunitRunner;

@RunWith(DbUnitJunitRunner.class)
@DbUnitDataSet("/dbunit")
@DbUnitInit(sql = "/sql/schema.sql")
public class MyRepositoryTest {

    @Test
    public void testFind() {
        // Query against dataSet.
    }

    @Test
    @DbUnitDataSet("/dbunit/xml/table1.xml")
    public void testFind() {
        // Query against dataSet.
        // DataSet is defined for this method.
    }
}

The same annotations can be used with JUnit runner and JUnit rule.

JSON DataSet

By default, DbUnit is shipped with XML dataset (and some other implementations).

This library add JSON dataset:

• Add Jackson2 (or Gson, or Jackson1) to your classpath.
• Define your json file:

{
  "table1": [
    { "id": 1, "name": "John Doe" },
    { "id": 2, "name": "Jane Doe" }
  ],

  "table2": [
    { "id": 1, "title": "Star Wars" }
  ]
}

Now, if you add @DbUnitDataSet annotation to your JUnit test, this library will try to load the appropriate implementation for your file:

• If file has .json extention, then JSON dataset implementation is used.
• If file has .xml extention, then XML dataset implementation is used.

Spring

Test Execution Listener

To run DbUnit with Spring, you can use the test execution listener implementation:

package com.github.mjeanroy.repository;

import org.junit.Test;
import org.junit.runner.RunWith;
import com.github.mjeanroy.dbunit.core.annotations.DbUnitDataSet;
import com.github.mjeanroy.dbunit.integration.junit.DbUnitJunitRunner;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.TestExecutionListeners;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.support.DependencyInjectionTestExecutionListener;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = TestSpringConfiguration.class)
@TestExecutionListeners({
    DependencyInjectionTestExecutionListener.class,
    DbUnitTestExecutionListener.class
})
@DbUnitDataSet("/dbunit")
public class MyRepositoryTest {

    @Test
    public void testFind() {
        // Query against dataSet.
    }

    @Test
    @DbUnitDataSet("/dbunit/table1.xml")
    public void testFind() {
        // Query against dataSet.
        // DataSet is defined for this method.
    }
}

Working with EmbeddedDatabase

Spring provide implementation for EmbeddedDatabase (using HSQL, H2 or DERBY). With this library, you can now use a rule to start/stop test database between test method execution:

package com.github.mjeanroy.repository;

import java.sql.Connection;

import org.junit.Test;
import org.junit.ClassRule;
import org.junit.Rule;

import com.github.mjeanroy.dbunit.core.annotations.DbUnitDataSet;
import com.github.mjeanroy.dbunit.core.annotations.DbUnitInit;
import com.github.mjeanroy.dbunit.core.annotations.DbUnitSetup;
import com.github.mjeanroy.dbunit.core.jdbc.AbstractJdbcConnectionFactory;
import com.github.mjeanroy.dbunit.integration.junit.DbUnitRule;
import com.github.mjeanroy.dbunit.integration.spring.EmbeddedDatabaseRule;

@DbUnitDataSet("/dbunit")
public class MyRepositoryTest {

    @ClassRule
    public static EmbeddedDatabaseRule dbRule = new EmbeddedDatabaseRule();

    @Rule
    public DbUnitRule dbUnitRule = new DbUnitRule(new AbstractJdbcConnectionFactory {
        @Override
        protected Connection createConnection() throws Exception {
            return dbRule.getDb().getConnection();
        }
    });

    @Test
    public void testFind() {
        // Query against dataSet.
    }

    @Test
    @DbUnitDataSet("/dbunit/table1.json")
    public void testFind() {
        // Query against dataSet.
        // DataSet is defined for this method.
    }
}

You can also use a simple rule to wrap spring EmbeddedDatabase and DbUnit:

package com.github.mjeanroy.repository;

import org.junit.Test;
import org.junit.Rule;
import com.github.mjeanroy.dbunit.core.annotations.DbUnitDataSet;
import com.github.mjeanroy.dbunit.core.annotations.DbUnitInit;
import com.github.mjeanroy.dbunit.core.annotations.DbUnitSetup;
import com.github.mjeanroy.dbunit.integration.spring.DbUnitEmbeddedDatabaseRule;

@DbUnitDataSet("/dbunit")
public class MyRepositoryTest {

    @Rule
    public DbUnitEmbeddedDatabaseRule dbRule = new DbUnitEmbeddedDatabaseRule();

    @Test
    public void testFind() {
        // Query against dataSet.
    }

    @Test
    @DbUnitDataSet("/dbunit/table1.json")
    public void testFind() {
        // Query against dataSet.
        // DataSet is defined for this method.
    }
}

Liquibase integration

Liquibase is a tool to apply database migration using simple XML file. DbUnit can run liquibase update before test execution using @DbUnitLiquibase annotation:

package com.github.mjeanroy.repository;

import org.junit.Test;
import org.junit.runner.RunWith;
import com.github.mjeanroy.dbunit.core.annotations.DbUnitDataSet;
import com.github.mjeanroy.dbunit.core.annotations.DbUnitInit;
import com.github.mjeanroy.dbunit.core.annotations.DbUnitSetup;
import com.github.mjeanroy.dbunit.core.annotations.DbUnitLiquibase;
import com.github.mjeanroy.dbunit.integration.junit.DbUnitJunitRunner;

@DbUnitDataSet("/dbunit/xml")
@DbUnitLiquibase("/liquibase/changelog.xml")
public class MyRepositoryTest {

    @Test
    public void testFind() {
        // Query against dataSet.
    }

    @Test
    @DbUnitDataSet("/dbunit/xml/table1.xml")
    public void testFind() {
        // Query against dataSet.
        // DataSet is defined for this method.
    }
}

Important: DbUnit will run liquibase migration using dbunit and test context (this may allow you to skip some changesets for unit test).