public void SetUp()
        {
            _relationDefinition1 = CreateRelationDefinition("RelationDefinition1");
            _relationDefinition2 = CreateRelationDefinition("RelationDefinition2");
            _relationDefinition3 = CreateRelationDefinition("RelationDefinition3");

            _validationRuleMock = MockRepository.GenerateStrictMock <IRelationDefinitionValidatorRule> ();
            _fakeValidMappingValidationResult   = MappingValidationResult.CreateValidResult();
            _fakeInvalidMappingValidationResult = MappingValidationResult.CreateInvalidResult("Test");
        }