jUnit：如何过滤在多个套件中找到的测试

Question

When jUnit runs a test suite containing multiple "sub suites", is it possible to filter tests found in different suites as to make them run only once ? I'm working on a project with many database integration tests so it's desirable run these only once as to make it quicker.

Consider this "main suite":

@RunWith(Suite.class)
@SuiteClasses
({
    ModuleASuite.class,
    ModuleBSuite.class,
    // More suites...
})
public class MainSuite
{}

And these "sub suites":

@RunWith(Suite.class)
@SuiteClasses
({
    TestA1.class,
    TestA2.class,
    //... More tests only related to ModuleA

    SomeTestUsedByManyModules.class
})
public class ModuleASuite
{}

@RunWith(Suite.class)
@SuiteClasses
({
    TestB1.class,
    TestB2.class,
    //... More tests only related to ModuleB

    SomeTestUsedByManyModules.class
})
public class ModuleBSuite
{}

Currently when running MainSuite using jUnit 4.4 (using Eclipse or Ant) it runs SomeTestUsedByManyModules twice. How can I make it run only once? I thought of making my own Runner but maybe there's an easer solution for this?

Answer 1

I don't know how to do it with @RunWith(Suite), but what about a different approach? ClassPathSuite lets you provide test name patterns to avoid the need to list them all out manually.