@Deployment
public static Archive<?> deploy() {
    return ShrinkWrap.create(WebArchive.class)
            .addPackages(true, DataSourceDefinitionWebxmlPuTest.class.getPackage())
            .addAsResource("META-INF/persistence.xml")
            .addAsWebInfResource(resource("web.xml"))
            .addAsLibraries(Maven.resolver()
                .loadPomFromFile("pom.xml")
                .resolve("com.h2database:h2")
                .withoutTransitivity()
                .asSingleFile())
            ;
}

@Test
public void insertAndQueryEntity() throws Exception {

    testService.saveNewEntity();

    List<TestEntity> testEntities = testService.getAllEntities();

    assertTrue(testEntities.size() == 1);
    assertTrue(testEntities.get(0).getValue().equals("mytest"));
}