@RunWith(typeof(XtextRunner))
@InjectWith(typeof(DslTwoUITestInjectorProvider))
class DslTwoValidationTest {

  @Inject
  ValidationTestHelper validationTestHelper
  @Inject
  Provider<XtextResourceSet> resourceSetProvider

  static val DSL_ONE = '''
	DslOne 1.0
	
	concept Concept1
  '''

  static val DSL_TWO = '''
	DslTwo 1.0
	
	concept Concept2 is a Concept3
  '''

  @Test
  def void test() {
    val resourceSet = resourceSetProvider.get
    val dslOne = resourceSet.createResource(URI.createURI("dslOne.dslOne")) as XtextResource
    dslOne.load(new StringInputStream(DSL_ONE), emptyMap)
    val dslTwo = resourceSet.createResource(URI.createURI("dslTwo.dslTwo")) as XtextResource
    validationTestHelper.assertNoErrors(dsl Two)
  }


}

public class DslTwoUITestInjectorProvider implements IInjectorProvider, IRegistryConfigurator {

  private GlobalStateMemento stateBeforeInjectorCreation;
  private GlobalStateMemento stateAfterInjectorCreation;
  private Injector injector;
  private Injector dslOneInjector;
  private static DslTwoUITestInjectorProvider instance;

  static {
    GlobalRegistries.initializeDefaults();
  }

  @Override
  public Injector getInjector() {
    if (injector == null) {
      stateBeforeInjectorCreation = GlobalRegistries.makeCopyOfGlobalState();
      this.injector = internalCreateInjector();
      instance = this;
      stateAfterInjectorCreation = GlobalRegistries.makeCopyOfGlobalState();
    }
    return injector;
  }

  public Injector getDslOneInjectorInjector() {
    return dslOneInjector;
  }

  private Injector internalCreateInjector() {
	dslOneInjector = new DslOneUiInjectorProvider().getInjector();
    return new DslTwoUiInjectorProvider().getInjector();
  }

  @Override
  public void restoreRegistry() {
    stateBeforeInjectorCreation.restoreGlobalState();
  }

  @Override
  public void setupRegistry() {
    getInjector();
    stateAfterInjectorCreation.restoreGlobalState();
  }

  public static DslTwoUITestInjectorProvider getInstance() {
    return instance;
  }
}

concept Concept3