http://nurkiewicz.blogspot.com/2010/12/speeding-up-spring-integration-tests.html

all.java

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:test-context.xml")
@Transactional
public class MainControllerTest {
    //...
}

//...

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:test-context.xml")
@Transactional
public class BarRepositoryTest {
    //...
}

//...

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:test-context.xml")
@Transactional
public class BarServiceTest {
    //...
}

//...

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:test-context.xml")
@Transactional
public class FooRepositoryTest {
    //...
}

//...

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:test-context.xml")
@Transactional
public class FooServiceTest {
    //...
}

context.xml

<beans default-lazy-init="true">

gistfile4.txt

pom.xml
src
|-- main
|    -- java
|       `-- com
|           `-- blogspot
|               `-- nurkiewicz
|                   `-- spring
|                       `-- test
|                           `-- web
|                               `-- MainController.java
`-- test
    |-- java
    |   `-- com
    |       `-- blogspot
    |           `-- nurkiewicz
    |               `-- spring
    |                   `-- test
    |                       `-- web
    |                           `-- MainControllerTest.java
    `-- resources
         -- com
            `-- blogspot
                `-- nurkiewicz
                    `-- spring
                        `-- test
                            `-- web
                                `-- MainControllerTest-context.xml

MainControllerTest.java

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration
@Transactional
public class MainControllerTest {
    //...
}

MainControllerTest2.java

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

	@Resource
	private MainController mainController;

	@Test
	public void smokeTest() throws Exception {
		//mainController...
	}

}