public RequireValidationSampleViewModel()
{
this.GetPropertyMetadata(() => Text)
.AddCascadeChangeNotifications(() => Sample);
this.SetInitialPropertyValue(() => MergeErrors, true)
.OnChanged(pvc =>
{
ValidationService.MergeValidationErrors = MergeErrors;
ResetValidation();
Validate(ValidationBehavior.TriggerValidationErrorsOnFailure);
});
ValidationService = new DataAnnotationValidationService <RequireValidationSampleViewModel>(this)
{
MergeValidationErrors = MergeErrors
}.AddRule
(
property: o => o.Text,
rule: ctx =>
{
return(ctx.Entity.Text == "foo"
? ctx.Succeeded()
: ctx.Failed("must be equal to 'foo'"));
}
);
}
public void AbstractViewModel_When_merge_errors_changes_it_should_not_fail()
{
var sut = new SampleTestViewModel();
var svc = new DataAnnotationValidationService <SampleTestViewModel>(sut);
sut.ValidateUsing(svc, forceIsValidationEnabledTo: true);
sut.Validate();
svc.MergeValidationErrors = !svc.MergeValidationErrors;
}
public void AbstractViewModel_it_should_be_possible_to_change_a_validatable_property_in_the_validated_event()
{
var sut = new SampleTestViewModel();
var svc = DataAnnotationValidationService.CreateFor(sut);
sut.ValidateUsing(svc, forceIsValidationEnabledTo: true);
sut.Validated += (s, e) =>
{
sut.AnotherOne = "fail";
};
sut.NotNullNotEmpty = "a value";
}
public void AbstractViewModel_it_should_be_possible_to_change_a_validatable_property_at_custom_validation_time()
{
var sut = new SampleTestViewModelWithValidationCallback();
var svc = DataAnnotationValidationService.CreateFor(sut);
sut.ValidateUsing(svc, forceIsValidationEnabledTo: true);
sut.Test_OnValidate = ctx =>
{
sut.AnotherOne = "fail";
};
sut.NotNullNotEmpty = "a value";
}
protected override IValidationService GetValidationService()
{
var svc = new DataAnnotationValidationService <RequireValidationSampleViewModel>(this)
{
MergeValidationErrors = this.MergeErrors
}.AddRule
(
property: () => this.Text,
error: ctx => "must be equal to 'foo'",
rule: ctx => ctx.Entity.Text == "foo"
);
return(svc);
}
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 AbstractMementoViewModel_When_Validate_and_Validation_is_suspended_Validated_event_should_not_be_raised()
{
Boolean raised = false;
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.Validate();
}
Assert.IsFalse(raised);
}
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);
}
public void AbstractMementoViewModel_it_should_be_possible_to_change_a_validatable_property_in_a_custom_validation_rule()
{
var sut = new SampleTestViewModel();
var svc = DataAnnotationValidationService.CreateFor(sut);
svc.AddRule(
property: () => sut.NotNullNotEmpty,
error: ctx => "error",
rule: ctx =>
{
sut.AnotherOne = "fail";
return(true);
});
sut.ValidateUsing(svc, forceIsValidationEnabledTo: true);
sut.NotNullNotEmpty = "a value";
}
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));
}
