Spring not autowiring in unit tests with JUnit

Question

I test the following DAO with JUnit    Repository public class MyDao         Autowired     private SessionFactory sessionFactory          Other stuff here      As you can see  the sessionFactory is autowired using Spring  When I run the test  sessionFactory remains null and I get a null pointer exception   This is the sessionFactory configuration in Spring    lt bean id  sessionFactory      class  org springframework orm hibernate3 LocalSessionFactoryBean  gt       lt property name  dataSource  ref  dataSource    gt       lt property name  configLocation  gt           lt value gt classpath hibernate cfg xml lt  value gt       lt  property gt       lt property name  configurationClass  gt           lt value gt org hibernate cfg AnnotationConfiguration lt  value gt       lt  property gt       lt property name  hibernateProperties  gt           lt props gt               lt prop key  hibernate dialect  gt   jdbc dialect  lt  prop gt               lt prop key  hibernate show sql  gt true lt  prop gt           lt  props gt       lt  property gt   lt  bean gt    What s wrong  How can I enable autowiring for unit testings too   Update  I don t know if it s the only way to run JUnit tests  but note that I m running it in Eclipse with right-clicking on the test file and selecting  run as -  JUnit test

User · Answer

Missing Context file location in configuration can cause this, one approach to solve this:

Specifying Context file location in ContextConfiguration

like:

@ContextConfiguration(locations = { "classpath:META-INF/your-spring-context.xml" })

More details

@RunWith( SpringJUnit4ClassRunner.class )
@ContextConfiguration(locations = { "classpath:META-INF/your-spring-context.xml" })
public class UserServiceTest extends AbstractJUnit4SpringContextTests {}

Reference:Thanks to @Xstian

User · Answer

I had same problem with Spring Boot 2 1 1 and JUnit 4 just added those annotations    RunWith  SpringRunner class    SpringBootTest   and all went well    For Junit 5    ExtendWith SpringExtension class    source

User · Answer

I m using JUnit 5 and for me the problem was that I had imported Test from the wrong package  import org junit Test   Replacing it with the following worked for me  import org junit jupiter api Test

User · Answer

Add something like this to your root unit test class    RunWith  SpringJUnit4ClassRunner class    ContextConfiguration   This will use the XML in your default path  If you need to specify a non-default path then you can supply a locations property to the ContextConfiguration annotation   http   static springsource org spring docs 2 5 6 reference testing html

User · Answer

You need to use the Spring JUnit runner in order to wire in Spring beans from your context  The code below assumes that you have a application context called testContest xml available on the test classpath   import org hibernate SessionFactory  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 junit4 SpringJUnit4ClassRunner  import org springframework transaction annotation Transactional   import java sql SQLException   import static org hamcrest MatcherAssert assertThat  import static org hamcrest Matchers startsWith    RunWith SpringJUnit4ClassRunner class   ContextConfiguration locations     classpath     testContext xml     Transactional public class someDaoTest         Autowired     protected SessionFactory sessionFactory        Test     public void testDBSourceIsCorrect   throws SQLException           String databaseProductName   sessionFactory getCurrentSession                    connection                    getMetaData                    getDatabaseProductName            assertThat  Test container is pointing at the wrong DB    databaseProductName  startsWith  HSQL               Note  This works with Spring 2 5 2 and Hibernate 3 6 5

User · Answer

You need to add annotations to the Junit class  telling it to use the SpringJunitRunner  The ones you want are    ContextConfiguration   test-context xml    RunWith SpringJUnit4ClassRunner class    This tells Junit to use the test-context xml file in same directory as your test  This file should be similar to the real context xml you re using for spring  but pointing to test resources  naturally

[java] Spring not autowiring in unit tests with JUnit

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