public void GetFormattedErrorMessage_ReturnsFormattedString()
{
//Create an Entity
var emptyContact = new Contact();
emptyContact.FirstName = null;
emptyContact.LastName = null;
//Create PropertyValidator
var propertyValidator =
new PropertyValidator<Contact, string>(contact => contact.LastName);
//Create a rule
RuleValidator<Contact, string> ruleValidator = new LengthBetween<Contact>(1, 5);
//Create a context
var context = new RuleValidatorContext<Contact, string>(emptyContact, propertyValidator, null);
//create it like this? IOC? Factory?
//IMessageStore messageStore = new ResourceMessageStore();
//string errorMessage = messageStore.GetFormattedDefaultMessage(ruleValidator.GetType().Name, context, ruleValidator.Parameters);
var messageService = new MessageService();
var errorMessage = messageService.GetDefaultMessageAndFormat(new MessageContext(context, ruleValidator.GetType(), false, null, null), ruleValidator.Parameters);
Assert.That(errorMessage, Is.Not.Null.Or.Empty);
Assert.That(errorMessage, Is.StringContaining("Last Name"));
Assert.That(errorMessage, Is.StringContaining("1"));
Assert.That(errorMessage, Is.StringContaining("5"));
//null: Search for Actual value but it's empty b/c the value is null
}
public RuleValidatorContext<CalendarEvent, System.DateTime> BuildContextForCalendarEventStartDate(DateTime startDate)
{
var calendarEvent = new CalendarEvent() { StartDate = startDate };
var context = new RuleValidatorContext<CalendarEvent, DateTime>(calendarEvent, "StartDate", calendarEvent.StartDate, null, ValidationLevelType.Error, null);
return context;
}
protected ValidationResult Evaluate(bool isValid, RuleValidatorContext context)
{
if (Negate)
{
if (!isValid)
{
return null;
}
else
{
return ValidationResultFactory.Create(this, context, Parameters, MessageKey);
}
}
else
{
if (isValid)
{
return null;
}
else
{
return ValidationResultFactory.Create(this, context, Parameters,MessageKey);
}
}
}
public RuleValidatorContext<Contact, bool> BuildContextForContactActive(bool value)
{
var contact = new Contact { Active = value };
var context = new RuleValidatorContext<Contact, bool>(contact, "Active", contact.Active, null, ValidationLevelType.Error, null);
return context;
}
public static ValidationResult Create(RuleValidator validator, RuleValidatorContext context, IList<Object> parameterValues, object messageKey, IEnumerable<ValidationResult> nestedValidationResults = null)
{
string message = string.Empty;
var messageService = new MessageService();
if (String.IsNullOrEmpty(validator.Message))
{
var messageContext = new MessageContext(context, validator.GetType(), validator.Negate, validator.MessageStoreName, messageKey, validator.MessageFormatter);
message = messageService.GetDefaultMessageAndFormat(messageContext, parameterValues);
}
else
{
//Since the message was supplied, don't get the default message from the store, just format it
message = messageService.FormatMessage(validator.Message, context, parameterValues, validator.MessageFormatter);
}
//Override level if all the nested validation errors are Warnings
if (nestedValidationResults != null && nestedValidationResults.All(vr => vr.Level == ValidationLevelType.Warn))
{
return new ValidationResult(context.PropertyInfo, message, ValidationLevelType.Warn, context.PropertyValue, nestedValidationResults);
}
else
{
return new ValidationResult(context.PropertyInfo, message, context.Level, context.PropertyValue, nestedValidationResults);
}
//return new ValidationResult(context.PropertyInfo, message, context.Level, context.PropertyValue, nestedValidationResults);
}
public string FormatMessage(string message, RuleValidatorContext context, object[] parameters, Func<object, string> propertyValueFormatter)
{
//Replace known keywords with actual values
var formattedMessage = message.Replace("{PropertyName}", buildPropertyName(context));
if (context.PropertyValue == null)
{
formattedMessage = formattedMessage.Replace("{PropertyValue}", context.PropertyValue as string);
}
else
{
string formattedPropertyValue;
if (propertyValueFormatter == null)
{
formattedPropertyValue = context.PropertyValue.ToString();
}
else
{
formattedPropertyValue = propertyValueFormatter(context.PropertyValue);
}
formattedMessage = formattedMessage.Replace("{PropertyValue}", formattedPropertyValue);
}
//create param list for String.Format
var errorMessageParams = new List<object>();
if (parameters != null && parameters.Any())
{
errorMessageParams.AddRange(parameters);
}
return System.String.Format(formattedMessage, errorMessageParams.ToArray());
}
private RuleValidatorContext<Contact, string> BuildContextForName(string propertyValue)
{
var contact = new Contact { FirstName = propertyValue };
var context = new RuleValidatorContext<Contact, string>(contact, "FirstName", contact.FirstName, null, null);
return context;
}
public RuleValidatorContext(object instance, string propertyName, object propertyValue, MemberInfo propertyInfo, RuleValidatorContext parentContext)
{
Instance = instance;
PropertyName = propertyName;
PropertyValue = propertyValue;
PropertyInfo = propertyInfo;
Parent = parentContext;
}
public MessageContext(RuleValidatorContext ruleContext, Type validatorType, bool negate, string messageStoreName, object key)
{
RuleContext = ruleContext;
ValidatorType = validatorType;
Negate = negate;
MessageStoreName = messageStoreName;
Key = key;
}
public RuleValidatorContext(object instance, string propertyName, object propertyValue, ValidationLevelType level, MemberInfo propertyInfo, RuleValidatorContext parentContext)
{
Instance = instance;
PropertyName = propertyName;
PropertyValue = propertyValue;
PropertyInfo = propertyInfo;
Parent = parentContext;
Level = level;
}
public MessageContext(RuleValidatorContext ruleContext, Type validatorType, bool negate, string messageStoreName, object key, Func<object, string> propertyValueFormatter)
{
RuleContext = ruleContext;
ValidatorType = validatorType;
Negate = negate;
MessageStoreName = messageStoreName;
Key = key;
PropertyValueFormatter = propertyValueFormatter;
}
public RuleValidatorContext(object instance, PropertyValidator validator, RuleValidatorContext parentContext)
{
PropertyName = String.IsNullOrEmpty(validator.PropertyNameOverride)
? validator.PropertyName.SplitPascalCase()
: validator.PropertyNameOverride;
PropertyValue = validator.GetValueForProperty(instance);
PropertyInfo = validator.PropertyInfo;
Parent = parentContext;
Instance = instance;
}
public RuleValidatorContext<Contact, string> BuildContextForLength(string firstName, string lastName)
{
if (string.IsNullOrEmpty(lastName))
{
lastName = "Default";
}
var contact = new Contact { FirstName = firstName, LastName = lastName };
var context = new RuleValidatorContext<Contact, string>(contact, "First Name", contact.FirstName, null, ValidationLevelType.Error, null);
return context;
}
public void When_Required_And_CollectionValue_Is_Null()
{
var customer = new Customer();
var validator = new Required<Customer, IEnumerable>();
var context = new RuleValidatorContext<Customer, IEnumerable>(customer, "Contacts", customer.Contacts, null, null);
//Validate the validator only, return true of no error returned
var result = validator.Validate(context, null);
Assert.IsNotEmpty(result.Message);
}
public void When_Required_And_StringValue_Is_Null()
{
var customer = new Customer();
var validator = new Required<Customer, string>();
var context = new RuleValidatorContext<Customer, string>(customer, "Name", customer.Name, null, null);
//Validate the validator only, return true of no error returned
var result = validator.Validate(context, null);
Assert.IsNotEmpty(result.Message);
}
public void When_Required_And_StringValue_Is_Null()
{
var customer = new Customer();
var validator = new Required<Customer, string>();
var context = new RuleValidatorContext<Customer, string>(customer, "Name", customer.Name, null, ValidationLevelType.Error, null);
var notification = new ValidationNotification();
//Validate the validator only, return true of no error returned
validator.Validate(context, null, notification);
Assert.IsNotEmpty(notification.Errors[0].Message);
}
public void When_Required_And_CollectionValue_Is_Empty_IsInvalid()
{
var customer = new Customer() {Contacts = new List<Contact>()};
var validator = new Required<Customer, IEnumerable>();
var context = new RuleValidatorContext<Customer, IEnumerable>(customer, "Contacts", customer.Contacts, null, ValidationLevelType.Error, null);
var notification = new ValidationNotification();
//Validate the validator only, return true of no error returned
validator.Validate(context, null, notification);
Assert.IsNotEmpty(notification.Errors[0].Message);
}
public static ValidationResult Create(RuleValidator validator, RuleValidatorContext context, IList<Object> parameterValues, object messageKey)
{
string message = string.Empty;
var messageService = new MessageService();
if (String.IsNullOrEmpty(validator.Message))
{
var messageContext = new MessageContext(context, validator.GetType(), validator.Negate, validator.MessageStoreName, messageKey, validator.MessageFormatter);
message = messageService.GetDefaultMessageAndFormat(messageContext, parameterValues);
}
else
{
//Since the message was supplied, don't get the default message from the store, just format it
message = messageService.FormatMessage(validator.Message, context, parameterValues, validator.MessageFormatter);
}
return new ValidationResult(context.PropertyInfo, message, context.Level, context.PropertyValue);
}
public RuleValidatorContext(object instance, PropertyValidator validator, RuleValidatorContext parentContext)
{
PropertyValue = validator.GetValueForProperty(instance);
if (validator.PropertyNameOverride == null)
{
SelectPropertyName(instance, validator);
}
else
{
PropertyName = validator.PropertyNameOverride;
}
PropertyInfo = validator.PropertyInfo;
Parent = parentContext;
Instance = instance;
Level = validator.Level;
}
public RuleValidatorContext(object instance, PropertyValidator validator, RuleValidatorContext parentContext)
{
PropertyValue = validator.GetValueForProperty(instance);
if (validator.PropertyNameOverride == null)
{
SelectPropertyName(instance, validator);
}
else
{
PropertyName = validator.PropertyNameOverride;
}
PropertyInfo = validator.PropertyInfo;
Parent = parentContext;
Instance = instance;
Level = validator.Level;
}
public object GetParamValue <T, TProperty>(RuleValidatorContext <T, TProperty> context = null)
{
if (IsExpressionParam)
{
if (context == null)
{
throw new System.ArgumentException(
"Cannot get Param Value for an Expression Param without context.");
}
return(CompiledExpression.Invoke(context.Instance));
}
else
{
if (IsDelegate)
{
return(Delegate.DynamicInvoke(new object[] { context.Instance }));
}
else
{
return(paramValue);
}
}
}
public override bool Validate(RuleValidatorContext <T, TProperty> context, SpecificationContainer specificationContainer, ValidationNotification notification)
{
var result = _expression(context.Instance, context.PropertyValue);
return(Evaluate(result, context, notification));
}
public abstract bool Validate(object instance, RuleValidatorContext parentRuleContexts, SpecificationContainer specificationContainer, ValidationNotification notification);
public abstract List<ValidationResult> Validate(object instance, RuleValidatorContext parentRuleContexts, SpecificationContainer specificationContainer);
public string FormatMessage(string message, RuleValidatorContext context, object[] parameters)
{
return FormatMessage(message, context, parameters, null);
}
public RuleValidatorContext<Contact, string> BuildContextForLength(string value)
{
var contact = new Contact {FirstName = value};
var context = new RuleValidatorContext<Contact, string>(contact, "First Name", contact.FirstName, null, ValidationLevelType.Error, null);
return context;
}
public RuleValidatorContext<Contact, string> BuildContext(string value)
{
var contact = new Contact { FirstName = value };
var context = new RuleValidatorContext<Contact, string>(contact, "First Name", contact.FirstName, null, null);
return context;
}
private string buildPropertyName(RuleValidatorContext context)
{
//Build a string with the graph of property names
var propertyNameNodes = new List<string>();
RuleValidatorContext currentContext = context;
do
{
propertyNameNodes.Add(currentContext.PropertyName.SplitPascalCase());
currentContext = currentContext.Parent;
} while (currentContext != null);
//Reverse by putting the top level first
propertyNameNodes.Reverse();
//create a string containing the heirarchy flattened out
var propertyNameForNestedProperty = new StringBuilder();
//add a space between nodes
propertyNameNodes.ForEach(p => propertyNameForNestedProperty.AppendFormat(" {0}", p));
return propertyNameForNestedProperty.ToString().Trim();
}
