/** creating some dummy data. */
  @Before
  public void init() {
    modelService = createMock(ModelService.class);

    preparer = new AttributeConstraintPreparer();
    preparer.setModelService(modelService);
    attrValidator = new AttributeConstraintValidator();
    attrValidator.setModelService(modelService);

    typeValidator = new TypeConstraintValidator();
    typeValidator.setModelService(modelService);

    prodModCT = new ComposedTypeModel();
    prodModCT.setJaloclass(Product.class);
    prodModCT.setCode("Product");

    prodModCodeAD = new AttributeDescriptorModel();
    prodModCodeAD.setQualifier("code");
    prodModCodeAD.setEnclosingType(prodModCT);
  }