### JUnit Test Method with DBUnit Database Setup

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/spring-test-dbunit/src/site/markdown/sample.md

Demonstrates the usage of the `@DatabaseSetup` annotation on a JUnit `@Test` method. This annotation instructs DBUnit to load the specified XML dataset (`sampleData.xml`) into the database before the test method executes, ensuring a consistent test environment.

```java
@Test
@DatabaseSetup("sampleData.xml")
```

--------------------------------

### Spring JUnit Test Class Setup with DBUnit

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/spring-test-dbunit/src/site/markdown/sample.md

Illustrates the basic structure of `PersonServiceTest`, a JUnit test class configured with Spring and DBUnit. It uses `SpringJUnit4ClassRunner`, `@ContextConfiguration`, and registers `DependencyInjectionTestExecutionListener` and `DbUnitTestExecutionListener` for comprehensive testing.

```java
package example.service;

import static junit.framework.Assert.assertEquals;

import java.util.List;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
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;
import org.springframework.test.dbunit.DbUnitTestExecutionListener;
import org.springframework.test.dbunit.annotation.DatabaseSetup;
import org.springframework.test.dbunit.annotation.ExpectedDatabase;

import example.entity.Person;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration
@TestExecutionListeners({ DependencyInjectionTestExecutionListener.class,
		DbUnitTestExecutionListener.class })
public class PersonServiceTest {

	@Autowired
	private PersonService personService;
}
```

--------------------------------

### Define Initial Database State with sampleData.xml

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/spring-test-dbunit/src/site/markdown/sample.md

This XML snippet provides the content for 'sampleData.xml'. This file is used by DBUnit's '@DatabaseSetup' annotation to populate the database with a predefined set of data before a test method runs.

```XML
<?xml version="1.0" encoding="UTF-8"?>
<dataset>
	<Person id="0" title="Mr" firstName="Phillip" lastName="Webb"/>
</dataset>
```

--------------------------------

### Spring XML Configuration for Test Environment

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/spring-test-dbunit/src/site/markdown/sample.md

Defines the Spring application context for testing, including component scanning, annotation-driven transaction management, an in-memory HSQLDB data source, and a JPA `EntityManagerFactory` configured with Hibernate for persistence.

```xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="
	http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
	http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

	<context:component-scan base-package="example" />
	<tx:annotation-driven transaction-manager="transactionManager" />

	<bean id="dataSource"
		class="org.springframework.jdbc.datasource.DriverManagerDataSource">
		<property name="driverClassName" value="org.hsqldb.jdbcDriver" />
		<property name="url" value="jdbc:hsqldb:mem:paging" />
		<property name="username" value="sa" />
		<property name="password" value="" />
	</bean>

	<bean id="entityManagerFactory"
		class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<property name="jpaDialect">
			<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect"/>
		</property>
	</bean>

	<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
		<property name="entityManagerFactory" ref="entityManagerFactory" />
	</bean>
</beans>
```

--------------------------------

### Verify Data Retrieval with Spring DBUnit

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/spring-test-dbunit/src/site/markdown/sample.md

This Java test method demonstrates how to test data retrieval. DBUnit is expected to have populated the database before this test runs, allowing the assertion of the retrieved list's size and content.

```Java
public void testFind() throws Exception {
	List<Person> personList = personService.find("hil");
	assertEquals(1, personList.size());
	assertEquals("Phillip", personList.get(0).getFirstName());
}
```

--------------------------------

### Configure Hibernate JPA Persistence Unit

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/spring-test-dbunit/src/site/markdown/sample.md

This persistence.xml file configures a JPA persistence unit named 'pagingDatabase' for Hibernate. It specifies the Hibernate persistence provider, registers the 'Person' entity, and sets the HSQLDB dialect.

```XML
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
	version="2.0">
	<persistence-unit name="pagingDatabase"
		transaction-type="RESOURCE_LOCAL">
		<provider>org.hibernate.ejb.HibernatePersistence</provider>
		<class>example.entity.Person</class>
		<properties>
			<property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect" />
```

--------------------------------

### Hibernate JPA Persistence Unit Properties

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/spring-test-dbunit/src/site/markdown/sample.md

Configures essential Hibernate properties within a JPA persistence unit, including automatic schema generation (`create-drop`), SQL logging, and the use of `HashtableCacheProvider` for caching.

```xml
			<property name="hibernate.hbm2ddl.auto" value="create-drop" />
			<property name="hibernate.show_sql" value="true" />
			<property name="hibernate.cache.provider_class" value="org.hibernate.cache.HashtableCacheProvider" />
		</properties>
	</persistence-unit>
</persistence>
```

--------------------------------

### JUnit Test Method for Person Service Find

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/spring-test-dbunit/src/site/markdown/sample.md

A JUnit `@Test` method (`testFind`) that verifies the `PersonService.find` functionality. It calls the service with a search term and uses `assertEquals` to assert the size of the returned list and the first name of the found `Person` entity.

```java
@Test
public void testFind() throws Exception {
	List<Person> personList = personService.find("hil");
	assertEquals(1, personList.size());
	assertEquals("Phillip", personList.get(0).getFirstName());
}
```

--------------------------------

### Configure Maven Dependencies for Spring Test DBUnit

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/spring-test-dbunit/src/site/markdown/sample.md

This POM file defines the necessary dependencies for a Spring Test DBUnit project, including Spring Framework, Hibernate, DBUnit, Spring Test DBUnit, JUnit, SLF4J, and HSQLDB. It also configures the Maven compiler plugin and JBoss repository.

```XML
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>example</groupId>
	<artifactId>spring-dbunit-example</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<properties>
		<spring.version>3.0.5.RELEASE</spring.version>
		<hibernate.core.version>3.5.6-Final</hibernate.core.version>
	</properties>
	<repositories>
		<repository>
			<id>jboss</id>
			<url>https://repository.jboss.org/nexus/content/groups/public/</url>
			<releases>
				<enabled>true</enabled>
			</releases>
			<snapshots>
				<enabled>false</enabled>
			</snapshots>
		</repository>
	</repositories>
	<build>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>2.3.1</version>
				<configuration>
					<compilerVersion>1.5</compilerVersion>
					<source>1.5</source>
				</configuration>
			</plugin>
		</plugins>
	</build>
	<dependencies>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-orm</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-annotations</artifactId>
			<version>${hibernate.core.version}</version>
		</dependency>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-entitymanager</artifactId>
			<version>${hibernate.core.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-test</artifactId>
			<version>${spring.version}</version>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.dbunit</groupId>
			<artifactId>dbunit</artifactId>
			<version>2.5.0</version>
			<type>jar</type>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>com.github.springtestdbunit</groupId>
			<artifactId>spring-test-dbunit</artifactId>
			<version>1.2.0</version>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.8.1</version>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>1.5.2</version>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.hsqldb</groupId>
			<artifactId>hsqldb</artifactId>
			<version>2.0.0</version>
			<scope>test</scope>
		</dependency>
	</dependencies>
</project>
```

--------------------------------

### DBUnit Sample Dataset for Person Entity

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/spring-test-dbunit/src/site/markdown/sample.md

An XML dataset file (`sampleData.xml`) formatted for DBUnit, containing two `Person` entity records. This data is used to initialize the database state before executing tests that rely on specific data.

```xml
<?xml version="1.0" encoding="UTF-8"?>
<dataset>
	<Person id="0" title="Mr" firstName="Phillip" lastName="Webb"/>
	<Person id="1" title="Mr" firstName="Fred" lastName="Bloggs"/>
</dataset>
```

--------------------------------

### Verify Data Deletion with Spring DBUnit @ExpectedDatabase

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/spring-test-dbunit/src/site/markdown/sample.md

This Java test method demonstrates how to verify database state after a test completes using the '@ExpectedDatabase' annotation. DBUnit will ensure the database matches 'expectedData.xml' after 'personService.remove(1)' is executed.

```Java
@Test
@DatabaseSetup("sampleData.xml")
@ExpectedDatabase("expectedData.xml")
public void testRemove() throws Exception {
	personService.remove(1);
}
```

--------------------------------

### Spring Service for Person Entity Search

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/spring-test-dbunit/src/site/markdown/sample.md

Defines a Spring `@Service` (`PersonService`) with `@Transactional` capabilities. It uses `@PersistenceContext` to inject an `EntityManager` and provides a `find` method to search for `Person` entities by name using a JPA named query.

```java
package example.service;

import java.util.List;

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

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import example.entity.Person;

@Service
@Transactional
public class PersonService {

	@PersistenceContext
	private EntityManager entityManager;

	@SuppressWarnings("unchecked")
	public List<Person> find(String name) {
		Query query = entityManager.createNamedQuery("Person.find");
		query.setParameter("name", "%"+name+"%");
		return query.getResultList();
	}
}
```

--------------------------------

### Apply @DatabaseSetup Annotation for Test Data Setup

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/README.md

Illustrates the usage of the @DatabaseSetup annotation to configure database tables before test methods run. This annotation can be applied at the method or class level and references a DataSet XML file for the setup operation.

```Java
@DatabaseSetup("sampleData.xml")
```

```Java
@DatabaseSetup("/META-INF/dbtest/sampleData.xml")
```

--------------------------------

### Implement Entity Removal in PersonService

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/spring-test-dbunit/src/site/markdown/sample.md

This Java code snippet shows the implementation of a 'remove' method within the 'PersonService' class. It finds a 'Person' entity by its ID and then removes it using the 'entityManager'.

```Java
public class PersonService {
...
	public void remove(int personId) {
		Person person = entityManager.find(Person.class, personId);
		entityManager.remove(person);
	}
...
```

--------------------------------

### Define Person JPA Entity with Named Query

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/spring-test-dbunit/src/site/markdown/sample.md

This Java class defines a simple JPA entity named 'Person' with attributes for ID, title, first name, and last name. It includes a named query 'Person.find' for searching by first or last name.

```Java
package example.entity;

import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;

@Entity
@NamedQueries({ @NamedQuery(name = "Person.find", query = "SELECT p from Person p where p.firstName like :name "
		+ "or p.lastName like :name") })
public class Person {

	@Id
	private int id;

	private String title;

	private String firstName;

	private String lastName;

	public int getId() {
		return id;
	}

	public String getTitle() {
		return title;
	}

	public void setTitle(String title) {
		this.title = title;
	}

	public String getFirstName() {
		return firstName;
	}

	public void setFirstName(String firstName) {
		this.firstName = firstName;
	}

	public String getLastName() {
		return lastName;
	}

	public void setLastName(String lastName) {
		this.lastName = lastName;
	}
}
```

--------------------------------

### Use @DatabaseSetups Wrapper for Multiple Connections (Pre-Java 8)

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/README.md

Shows how to achieve multiple database setups for different connections in Java versions prior to Java 8, using the `@DatabaseSetups` wrapper annotation. This provides equivalent functionality to repeatable annotations for older Java environments.

```Java
@Test
@DatabaseSetups({
		@DatabaseSetup(value = "insert.xml")
		@DatabaseSetup(connection="customerDataSource", value="insert-custs.xml")
	})
	public void testInsert() throws Exception {
		// Inserts "insert.xml" into dataSource and "insert-custs.xml" into customerDataSource
    	// ...
}
```

--------------------------------

### Configure JUnit 4 Test with Transactional DBUnit Listener

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/README.md

Demonstrates the annotations required for a JUnit 4 test to correctly integrate Spring Test DBUnit with `@Transactional` tests. It uses `TransactionDbUnitTestExecutionListener` to ensure transactions are started before data setup and rolled back after verification, preventing common issues.

```Java
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration
@Transactional
@TestExecutionListeners({ DependencyInjectionTestExecutionListener.class,
		DirtiesContextTestExecutionListener.class,
		TransactionDbUnitTestExecutionListener.class })
```

--------------------------------

### Use Repeatable @DatabaseSetup for Multiple Connections (Java 8+)

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/README.md

Demonstrates how to use repeatable `@DatabaseSetup` annotations in Java 8 and later to apply different dataset setups to multiple database connections within a single test method. This enables concurrent data insertion into various databases.

```Java
@Test
@DatabaseSetup(value = "insert.xml")
@DatabaseSetup(connection="customerDataSource", value="insert-custs.xml")
public void testInsert() throws Exception {
		// Inserts "insert.xml" into dataSource and "insert-custs.xml" into customerDataSource
    	// ...
}
```

--------------------------------

### Configure DataSource Bean for Spring DBUnit in XML

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/README.md

This XML configuration shows how to register a DataSource bean, typically named 'dataSource', which Spring DBUnit uses to access the database. The example configures an in-memory HSQLDB database using DriverManagerDataSource.

```XML
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
	<property name="driverClassName" value="org.hsqldb.jdbcDriver" />
	<property name="url" value="jdbc:hsqldb:mem:paging" />
	<property name="username" value="sa" />
	<property name="password" value="" />
</bean>
```

--------------------------------

### Java Implementation of a Custom DBUnit CSV DataSet Loader

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/README.md

This Java code provides an example of a custom `DataSetLoader` that reads data from CSV formatted files. It extends `AbstractDataSetLoader` and overrides the `createDataSet` method to return an `IDataSet` instance from a CSV URL. This approach allows for loading test data from sources other than the default flat XML files.

```Java
public class CsvDataSetLoader extends AbstractDataSetLoader {
	protected IDataSet createDataSet(Resource resource) throws Exception {
		return new CsvURLDataSet(resource.getURL());
	}
}
```

--------------------------------

### Configure Spring TestExecutionListeners for DBUnit

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/README.md

This snippet demonstrates how to configure a JUnit 4 test class to use Spring's DbUnitTestExecutionListener along with standard Spring listeners. This setup is essential for Spring DBUnit annotations to be processed correctly within your tests.

```Java
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration
@TestExecutionListeners({ DependencyInjectionTestExecutionListener.class,
		DirtiesContextTestExecutionListener.class,
 		TransactionalTestExecutionListener.class,
		DbUnitTestExecutionListener.class })
```

--------------------------------

### API: Custom IDatabaseConnections Configuration

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/README.md

Details the use of `DatabaseConfigBean` and `DatabaseDataSourceConnectionFactoryBean` for advanced configuration of `IDatabaseConnection` instances, addressing limitations with standard DBUnit `DatabaseConfig`.

```APIDOC
DatabaseConfigBean:
  - Purpose: Provides an alternative method to configure an IDatabaseConnection with standard getter/setter access for all configuration options, overcoming limitations of standard DBUnit DatabaseConfig.
DatabaseDataSourceConnectionFactoryBean:
  - Purpose: Accepts a configuration property to facilitate custom IDatabaseConnection creation.
```

--------------------------------

### Define Multiple DataSources in Spring XML Configuration

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/README.md

Shows how to declare multiple `DataSource` or `IDatabaseConnection` beans in Spring XML configuration. This enables the use of multiple in-memory databases within the same test environment, with each bean defining a separate connection.

```XML
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
	<property name="driverClassName" value="org.hsqldb.jdbcDriver" />
	<property name="url" value="jdbc:hsqldb:mem:paging" />
	<property name="username" value="sa" />
	<property name="password" value="" />
</bean>
<bean id="customerDataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
	<property name="driverClassName" value="org.hsqldb.jdbcDriver" />
	<property name="url" value="jdbc:hsqldb:mem:customers" />
	<property type="username" value="sa" />
	<property type="password" value="" />
</bean>
```

--------------------------------

### Clear database after tests using @DatabaseTearDown with an empty table XML

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/spring-test-dbunit/src/site/markdown/faq.md

Utilize the @DatabaseTearDown annotation on a test class with a DBUnit XML file to clear the database. Empty table elements in the XML instruct DBUnit to delete all data from those tables. Ensure tables are listed in an order that respects foreign key constraints to avoid errors.

```XML
<address/>
<custom/>
```

--------------------------------

### Configure Multiple Database Connections with @DbUnitConfiguration

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/README.md

Illustrates how to link a test class to multiple declared database connections using the `@DbUnitConfiguration` annotation. This allows the test to interact with different databases by referencing their bean names.

```Java
@DbUnitConfiguration(databaseConnection={"dataSource", "customerDataSource"})
```

--------------------------------

### Verify Database Contents with @ExpectedDatabase Annotation

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/README.md

Demonstrates the @ExpectedDatabase annotation, used to verify the contents of the database once a test has completed. It takes a value attribute referencing the DataSet file used to compare expected and actual results, supporting different assertion modes.

```Java
@ExpectedDatabase("expectedData.xml")
```

--------------------------------

### Spring XML Configuration for DBUnit Database Connection

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/README.md

This XML snippet demonstrates how to configure DBUnit's database connection and its properties within a Spring application context. It uses `DatabaseConfigBean` to set database-specific options like skipping Oracle recycle bin tables, and `DatabaseDataSourceConnectionFactoryBean` to establish the connection. It's important to note that username and password should generally not be set directly on the connection factory to avoid unexpected transaction behavior.

```XML
<bean id="dbUnitDatabaseConfig" class="com.github.springtestdbunit.bean.DatabaseConfigBean">
	<property name="skipOracleRecyclebinTables" value="true"/>
</bean>
<bean id="dbUnitDatabaseConnection" class="com.github.springtestdbunit.bean.DatabaseDataSourceConnectionFactoryBean">
	<property name="databaseConfig" ref="dbUnitDatabaseConfig"/>
</bean>
```

--------------------------------

### Specify Oracle database schema name with custom dbUnitDatabaseConnection bean

Source: https://github.com/springtestdbunit/spring-test-dbunit/blob/master/spring-test-dbunit/src/site/markdown/faq.md

Configure a custom dbUnitDatabaseConnection bean in Spring to specify an Oracle database schema name. This schema will be passed to the org.dbunit.database.DatabaseConnection constructor, allowing for targeted database operations.

```XML
<bean id="dbUnitDatabaseConnection" class="org.springframework.test.dbunit.bean.DatabaseDataSourceConnectionFactoryBean">
	<property name="schema" ref="myschema"/>
</bean>
```

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