This is mainly for my own reference but if it helps people out there great! The documentation on this aspect of JUnit is very poor.
package agalliao.wealthManagment.domain;
import org.junit.runner.RunWith;
import org.junit.runners.Suite;
@RunWith(Suite.class)
@Suite.SuiteClasses({
investmentTests.class,
catalogTests.class,
markerTests.class
})
public class AllTests {
// why on earth I need this class, I have no idea!
}