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Arquillian Database / Persistence Extension

README.md

Arquillian Persistence Extension

What is this?

Arquillian Persistence Extension was created to help you writing tests where persistence layer is involved. Inspired by great framework called Unitils, it brings bunch of annotations to help you deal with the underlying data storage.

It comes with following features:

  • Wrapping each test in the seperated transaction (with commit(default) or rollback at the end).
  • Seeding database using:
    • DBUnit with XML, XLS, YAML and JSON supported as data sets format.
    • Custom SQL scripts.
  • Comparing database state at the end of the test using given data sets (with column exclusion).
  • Eviction JPA second level cache between test method invocation, see @JpaCacheEviction.
Containers used for testing
  • Glassfish 3.1.2 Embedded
  • JBoss AS 7.0.2 Final (managed)
  • JBoss AS 7.1.1.Final (managed)
Verified with follolwing databases
  • HSQL
  • MS SQL 2008 Express (with Microsoft JDBC Driver)
  • MySQL 5.5.24
  • PostgreSQL 9.1.4
  • Derby

Enough talking, let's see it in action!

Code example


@RunWith(Arquillian.class)
public class UserPersistenceTest
{

  @Deployment
  public static Archive<?> createDeploymentPackage()
  {
      return ShrinkWrap.create(JavaArchive.class, "test.jar")
                       .addPackage(UserAccount.class.getPackage())
                       .addPackages(true, "org.fest") // FEST Assert is not part of Arquillian JUnit
                       .addAsManifestResource(EmptyAsset.INSTANCE, "beans.xml")
                       .addAsManifestResource("test-persistence.xml", "persistence.xml");
  }

  @PersistenceContext
  EntityManager em;

  @Test
  @UsingDataSet("datasets/users.yml")
  @ShouldMatchDataSet("datasets/expected-users.yml")
  public void should_change_user_password() throws Exception
  {
      // given
      String expectedPassword = "LexLuthor";
      UserAccount user = em.find(UserAccount.class, 2L);

      // when
      user.setPassword("LexLuthor");
      em.merge(user);

      // then
      assertThat(user.getPassword()).isEqualTo(expectedPassword);
  }
}

There are just two things which are different from the standard Arquillian test - @UsingDataSet and @ShouldMatchDataSet annotations. Former seeds the database using file in YAML format, and latter verifies database state using given file.

This example is taken from integration tests written for this project, so feel free to have a closer look.

But it's that easy! And there's more to come!

How to reach us out?

If you have any questions or would like to file feature request or bug report (hope not!) please have a look at the ways how you can get in touch with us.

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