RepositoryTestCase is a largely used class with many responsabilities within, as well as being an abstract class it introduces rigidness in the testing classes that might need it (since said test classes cannot inherit from others, as, for example, when using contract tests inheritance).

RepositoryTestCase might be deprecated (not removed) in favor of the better way of testing this scenarios (JUnit Rule/Extension/Runner for example). Some tests might be migrated. Also consider its parent class for refactor.