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:

<bean id="sessionFactory"     class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">     <property name="dataSource" ref="dataSource" />     <property name="configLocation">         <value>classpath:hibernate.cfg.xml</value>     </property>     <property name="configurationClass">         <value>org.hibernate.cfg.AnnotationConfiguration</value>     </property>     <property name="hibernateProperties">         <props>             <prop key="hibernate.dialect">${jdbc.dialect}</prop>             <prop key="hibernate.show_sql">true</prop>         </props>     </property> </bean> 

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"

Answer 1

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