public void NullCheckFailedHandler_ModelStateValid_AddsErrorString()
{
// Arrange
var modelState = new ModelStateDictionary();
var modelMetadata = GetMetadataForType(typeof(Person));
var validationNode = new ModelValidationNode(modelMetadata, "foo");
var validationContext = new ModelValidationContext(new DataAnnotationsModelMetadataProvider(),
Mock.Of <IModelValidatorProvider>(),
modelState,
modelMetadata,
null);
var e = new ModelValidatedEventArgs(validationContext, parentNode: null);
// Act
var handler = MutableObjectModelBinder.CreateNullCheckFailedHandler(modelMetadata, incomingValue: null);
handler(validationNode, e);
// Assert
Assert.True(modelState.ContainsKey("foo"));
Assert.Equal("A value is required.", modelState["foo"].Errors[0].ErrorMessage);
}
public void NullCheckFailedHandler_ModelStateAlreadyInvalid_DoesNothing()
{
// Arrange
var modelState = new ModelStateDictionary();
modelState.AddModelError("foo.bar", "Some existing error.");
var modelMetadata = GetMetadataForType(typeof(Person));
var validationNode = new ModelValidationNode(modelMetadata, "foo");
var validationContext = new ModelValidationContext(new DataAnnotationsModelMetadataProvider(),
Mock.Of <IModelValidatorProvider>(),
modelState,
modelMetadata,
null);
var e = new ModelValidatedEventArgs(validationContext, parentNode: null);
// Act
var handler = MutableObjectModelBinder.CreateNullCheckFailedHandler(modelMetadata, incomingValue: null);
handler(validationNode, e);
// Assert
Assert.False(modelState.ContainsKey("foo"));
}