public void CollectionValidatorResultOfTargetItemChanges_SecondCollectionValidatorReturnsNOK()
{
InvalidItemsOfSecondCollectionValidator.Add(TargetItem);
TargetItem.Revalidate();
AfterCollectionValidatorResultOf(TargetItem, changedFrom: OK, to: OK, itemIs: NOK, andValidationStateEvent: HasNotOccured);
AfterCollectionValidatorResultOf(TargetItem, changedFrom: NOK, to: NOK, itemIs: NOK, andValidationStateEvent: HasNotOccured);
AfterCollectionValidatorResultOf(TargetItem, changedFrom: OK, to: NOK, itemIs: NOK, andValidationStateEvent: Occured);
AfterCollectionValidatorResultOf(TargetItem, changedFrom: NOK, to: OK, itemIs: NOK, andValidationStateEvent: Occured);
}
private void AfterPropertyValidatorResultOf(EmployeeVM item, bool changedFrom, bool to, bool itemIs, bool andValidationStateEvent)
{
bool initiallyValidatorResultOK = (changedFrom == OK);
bool finalValidatorResultOK = (to == OK);
bool expectItemIsValid = (itemIs == OK);
bool expectValidationStateChangedEvent = (andValidationStateEvent == Occured);
ChangeValidatorResult(InvalidItemsOfPropertyValidator, item, initiallyValidatorResultOK);
TargetItem.Revalidate();
item.ValidationStateChangedEvents.Clear();
ChangeValidatorResult(InvalidItemsOfPropertyValidator, item, finalValidatorResultOK);
TargetItem.Revalidate();
AssertValidationState(item, expectItemIsValid);
AssertValidationStateChangedEvent(item, expectValidationStateChangedEvent);
}