java - Spring testing and maven

Question

I'm trying to test my Spring web app but i have some problems.

I added a test class in my maven

@RunWith( SpringJUnit4ClassRunner.class )
@ContextConfiguration
public class UserServiceTest {

    @Autowired
    private UserService userService;

    @Test
    public void testName() throws Exception {
        List<UserEntity> userEntities = userService.getAllUsers();

        Assert.assertNotNull(userEntities);
    }
}

But i got a NullPointerException on userService when i try to run this test. IntelliJ say "Could not autowire. No beans of 'UserService' type found. After adding @RunWith(SpringJUnit4ClassRunner.class) , i got this exception

java.lang.IllegalStateException: Neither GenericXmlContextLoader nor AnnotationConfigContextLoader was able to detect defaults, and no ApplicationContextInitializers were declared for context configuration

How can i solve it ? And i think i need to run this test on my tomcat server but how can i deploy for testing with IntelliJ ? (like command 'mvn clean install tomcat7:run-war-only')

Answer 1

You have to provide the location of your Spring context file to be initialized before the test starts.

Test class

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

    @Autowired
    private UserService userService;

    @Test
    public void testName() throws Exception {
        List<UserEntity> userEntities = userService.getAllUsers();

        Assert.assertNotNull(userEntities);
    }
}

your-spring-context.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context" 
    xmlns:tx="http://www.springframework.org/schema/tx" 
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">

    <bean id="userService" class="java.package.UserServiceImpl"/>

</beans>