I have split a project, based on Spring Boot, into several Maven modules. Now only the war-project contains a starter class (having a main method, starting Spring), the other modules are of type jar. How do I test the jar projects, if they don't include a starter? Example JUnit test case header: @RunWith(SpringJUnit4ClassRunner.class) @SpringApplicationConfiguration(StarterClassInDifferentProject.class) ... 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