How to Configure JPA for Testing in Maven

JPA Hibernate Maven testing -- unknown class

You are running the code from your own main method, which I am guessing means it isn't being run by maven. The code in test is not included as part of the artifact generated by maven, it is only included during mavens test phase for running unit tests.

If you are using maven, why not simply create JUnit tests that maven will run as part of the build process instead of rolling your own.

How to instruct Maven to ignore my main/resources/persistence.xml in favor of test/...?

Check out the alternate descriptors functionality which is aimed at what you're trying to do.

Try this setup:

• src/main/resources/META-INF/persistence.xml
• src/main/resources/META-INF/test.persistence.xml

Then you can construct OpenEJB to prefer the test.persistence.xml file by setting the openejb.altdd.prefix System or InitialContext property to test

A different possible solution could be to override the persistence unit properties in the test. With that approach you could avoid the need for a second persistence.xml which can be nice as maintaining two can be a pain.

You can use the Maven approach, but be aware that per spec the persistence provider will only look (aka scan) for @Entity beans in the exact jar or directory where the persistence.xml is found. So be keenly aware that in Maven these are two different locations:

• target/classes
• target/test-classes

EDIT More details on the overriding capabilities

You can override any property in your test setup via either system properties or the initial context properties (this includes jndi.properties files). The format is:

<unit-name>.<property>=<value>

So for example with the following persistence.xml:

<persistence>
  <persistence-unit name="movie-unit">
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
    <jta-data-source>movieDatabase</jta-data-source>
    <non-jta-data-source>movieDatabaseUnmanaged</non-jta-data-source>
    <properties>
      <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
      <property name="hibernate.max_fetch_depth" value="3"/>
    </properties>
  </persistence-unit>
</persistence>

You can override and add persistence unit properties in your test case. There are currently no facilities for removing them (if you have a need for that let us know – it hasn't really come up so far).

Properties p = new Properties();
p.put(Context.INITIAL_CONTEXT_FACTORY,"org.apache.openejb.client.LocalInitialContextFactory");

p.put("movie-unit.hibernate.hbm2ddl.auto", "update");
p.put("movie-unit.hibernate.dialect", "org.hibernate.dialect.HSQLDialect");

context = new InitialContext(p);

Or alternatively via a jndi.properties file

java.naming.factory.initial=org.apache.openejb.client.LocalInitialContextFactory
movie-unit.hibernate.hbm2ddl.auto = update
movie-unit.hibernate.dialect = org.hibernate.dialect.HSQLDialect

No autodetection of JPA Entities in maven-verify

By default autodetection works for entities in the same classpath item as persistence.xml. It can be configured by <jar-file> elements.

To enable correct autodetection when persistence.xml is in src/test/resources/META-INF I use the following trick:

persistence.xml:

<persistence ...>
    <persistence-unit ...>
        <jar-file>${project.build.outputDirectory}</jar-file>
        ...
    </persistence-unit>
</persistence>

pom.xml - enable resource filtering for src/test/resources:

<project ...>
    ...
    <build>
        <testResources>
            <testResource>
                <directory>src/test/resources</directory>
                <filtering>true</filtering>
            </testResource>
        </testResources>
    </build>
</project>

Though I'm not sure how to use it if your persistence.xml is actually in src/test/META-INF.

Spring Boot maven multimodule project - unit testing (application context)

After reading various articles and posts eg. Is it OK to use SpringRunner in unit tests? I realized that I don't need the entire application context when running tests, instead I should mock bean dependencies using plain @Mock annotation if testing without even involving and loading spring application context (which is faster). However, If I need some slice of application context (eg. to automatically load test properties or just for integration tests)
then I use spring boot annotations prepared for that: @WebMvcTest @JpaTest @SpringBootTest and so on.

Examples:

Plain Mock Test (without involving spring):

public class UserServiceImplTest {

    @Mock
    private UserRepository userRepository;

    private UserServiceImpl userService;

    @Before
    public void setUp() {
        MockitoAnnotations.initMocks(this);
        userService = new UserServiceImpl(userRepository);
    }

    /* Some tests here */

}

Test with slice of spring context:

@RunWith(SpringRunner.class)
@ActiveProfiles("test")
@EnableConfigurationProperties(value = DecisionProposalProperties.class)
@SpringBootTest(classes = {
        DecisionProposalRepositoryService.class,
        DecisionProposalMapperImpl.class
})
public class DecisionProposalRepositoryServiceTest {

    @MockBean
    private DecisionProposalRepository decisionProposalRepository;

    @MockBean
    private CommentRepository commentRepository;

    @Autowired
    private DecisionProposalRepositoryService decisionProposalRepositoryService;

    @Before
    public void setUp() {
        MockitoAnnotations.initMocks(this);
    }

    /* Some tests here */

}

Data jpa test:

@RunWith(SpringRunner.class)
@DataJpaTest
public class ImageProposalRepositoryTest {

    @Autowired
    private TestEntityManager entityManager;

    @Autowired
    private ImageProposalRepository imageProposalRepository;

    @Test
    public void testFindOne() throws Exception {
        ImageProposal imageProposal = ImageProposal.builder()
                .size(1024)
                .filePath("/test/file/path").build();
        entityManager.persist(imageProposal);
        ImageProposal foundImageProposal = imageProposalRepository.findOne(imageProposal.getId());
        assertThat(foundImageProposal).isEqualTo(imageProposal);
    }
}

How to test Maven module project with Spring Boot

I think context tests should be available per module so you can find issues with wire and configuration early on and not depend on your full application tests to find them.

I worked around this issue with a test application class in the same module.
Make sure this main class is in your test dir.

@SpringBootApplication
public class TestApplication {
    
    public static void main(String[] args) {
        SpringApplication.run(TestApplication.class, args);
    }
}

your context should work now.

@RunWith(SpringRunner.class)
@ActiveProfiles(profiles = {Profiles.WEB_REST})
@WebMvcTest(EntityController.class)
@DirtiesContext
public class ServicesControllerTest {

    @Autowired
    private MockMvc mvc;

    @MockBean
    private Controller controller;

    @Test
    public void testAll() throws Exception {
        given(controller.process(null)).willReturn(null);

        mvc.perform(get("/").accept(MediaType.APPLICATION_JSON))
                .andExpect(status().isOk());
    }
}

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