public void AbstractViewModel_When_ValidateProperty_with_Trigger_berhavior_PropertyChanged_event_should_be_raised_if_the_status_of_errors_changes()
{
List <String> raised = new List <string>();
var propName = "NotNullNotEmpty";
var sut = new SampleTestViewModel();
var svc = new DataAnnotationValidationService <SampleTestViewModel>(sut);
sut.ValidateUsing(svc, forceIsValidationEnabledTo: true);
sut.PropertyChanged += (s, e) => raised.Add(e.PropertyName);
sut.Test_ValidateProperty(propName, ValidationBehavior.TriggerValidationErrorsOnFailure);
using (svc.SuspendValidation()) //so that we can change a property without triggering the validation process
{
sut.NotNullNotEmpty = "qwertyqwerty"; //this raises 1 PropertyChanged
}
sut.Test_ValidateProperty(propName, ValidationBehavior.TriggerValidationErrorsOnFailure);
Assert.AreEqual(3, raised.Count(p => p == propName));
}
public void AbstractViewModel_When_ValidateProperty_with_Trigger_berhavior_ErrorsChanged_event_should_be_raised()
{
List <String> raised = new List <string>();
var propName = "NotNullNotEmpty";
var sut = new SampleTestViewModel();
var svc = new DataAnnotationValidationService <SampleTestViewModel>(sut);
sut.ValidateUsing(svc, forceIsValidationEnabledTo: true);
sut.ErrorsChanged += (s, e) => raised.Add(e.PropertyName);
sut.Test_ValidateProperty(propName, ValidationBehavior.TriggerValidationErrorsOnFailure);
Assert.IsTrue(raised.Contains(propName));
}
public void AbstractViewModel_When_ValidateProperty_PropertyChanged_event_should_not_be_raised()
{
List <String> raised = new List <string>();
var propName = "NotNullNotEmpty";
var sut = new SampleTestViewModel();
var svc = new DataAnnotationValidationService <SampleTestViewModel>(sut);
sut.ValidateUsing(svc, forceIsValidationEnabledTo: true);
sut.PropertyChanged += (s, e) => raised.Add(e.PropertyName);
sut.Test_ValidateProperty(propName);
Assert.IsFalse(raised.Contains(propName));
}
public void AbstractViewModel_When_ValidateProperty_and_Validation_is_suspended_Validated_event_should_not_be_raised()
{
Boolean raised = false;
var propName = "NotNullNotEmpty";
var sut = new SampleTestViewModel();
var svc = new DataAnnotationValidationService <SampleTestViewModel>(sut);
sut.ValidateUsing(svc, forceIsValidationEnabledTo: true);
sut.Validated += (s, e) => raised = true;
using (svc.SuspendValidation()) //so that we can change a property without triggering the validation process
{
sut.Test_ValidateProperty(propName, ValidationBehavior.TriggerValidationErrorsOnFailure);
}
Assert.IsFalse(raised);
}
