/// <summary>
/// Runs the call handler. This does validation on the parameters, and if validation
/// passes it calls the handler. It throws <see cref="ArgumentValidationException"/>
/// if validation fails.
/// </summary>
/// <param name="input">The <see cref="IMethodInvocation"/> that contains the details of the current call.</param>
/// <param name="getNext">The delegate to call to get the next handler in the pipeline.</param>
/// <returns>The eturn value from the target.</returns>
public IMethodReturn Invoke(IMethodInvocation input, GetNextHandlerDelegate getNext)
{
if (input == null)
{
throw new ArgumentNullException("input");
}
if (getNext == null)
{
throw new ArgumentNullException("getNext");
}
for (int index = 0; index < input.Inputs.Count; ++index)
{
ParameterInfo inputParameter = input.Inputs.GetParameterInfo(index);
Validator validator = CreateValidator(inputParameter);
object parameterValue = input.Inputs[index];
ValidationResults results = validator.Validate(parameterValue);
if (!results.IsValid)
{
ArgumentValidationException exception =
new ArgumentValidationException(results, inputParameter.Name);
return(input.CreateExceptionMethodReturn(exception));
}
}
return(getNext().Invoke(input, getNext));
}
public void CanGetTextualRepresentationForExceptionWithEmptyValidationResults()
{
var exception = new ArgumentValidationException(new ValidationResults(), "param");
var toString = exception.ToString();
Assert.IsNotNull(toString);
}
public void CanGetTextualRepresentationForExceptionWithKeylessValidationResults()
{
var results = new ValidationResults();
results.AddResult(new ValidationResult("message1", null, null, null, null));
var exception = new ArgumentValidationException(results, "param");
var toString = exception.ToString();
Assert.IsNotNull(toString);
Assert.IsTrue(toString.Contains("message1"));
}
public void CanDeserializeSerializedException()
{
var results = new ValidationResults();
results.AddResult(new ValidationResult("message1", null, null, null, null));
results.AddResult(new ValidationResult("message2", null, "the key", null, null));
results.AddResult(new ValidationResult("message3", null, null, null, null));
var exception = new ArgumentValidationException(results, "param");
var formatter = new BinaryFormatter();
ArgumentValidationException deserializedException;
using (var stream = new MemoryStream())
{
formatter.Serialize(stream, exception);
stream.Seek(0L, SeekOrigin.Begin);
deserializedException = (ArgumentValidationException)formatter.Deserialize(stream);
}
var toString = deserializedException.ToString();
Assert.IsNotNull(toString);
Assert.IsTrue(toString.Contains("message1"));
Assert.IsTrue(toString.Contains("message2"));
Assert.IsTrue(toString.Contains("message3"));
}
/// <summary>
/// Runs the call handler. This does validation on the parameters, and if validation
/// passes it calls the handler. It throws <see cref="ArgumentValidationException"/>
/// if validation fails.
/// </summary>
/// <param name="input"><see cref="IMethodInvocation"/> containing details of the current call.</param>
/// <param name="getNext">delegate to call to get the next handler in the pipeline.</param>
/// <returns>Return value from the target.</returns>
public IMethodReturn Invoke(IMethodInvocation input, GetNextHandlerDelegate getNext)
{
if (input == null) throw new ArgumentNullException("input");
if (getNext == null) throw new ArgumentNullException("getNext");
for (int index = 0; index < input.Inputs.Count; ++index)
{
ParameterInfo inputParameter = input.Inputs.GetParameterInfo(index);
Validator validator = CreateValidator(inputParameter);
object parameterValue = input.Inputs[index];
ValidationResults results = validator.Validate(parameterValue);
if (!results.IsValid)
{
ArgumentValidationException exception =
new ArgumentValidationException(results, inputParameter.Name);
return input.CreateExceptionMethodReturn(exception);
}
}
return getNext().Invoke(input, getNext);
}
