public async Task BindParameter_WithEmptyData_AndPerTypeMessage_AddsGivenMessage(Type parameterType)
{
// Arrange
var metadataProvider = new TestModelMetadataProvider();
metadataProvider
.ForType(parameterType)
.BindingDetails((Action <ModelBinding.Metadata.BindingMetadata>)(binding =>
{
// A real details provider could customize message based on BindingMetadataProviderContext.
binding.ModelBindingMessageProvider.ValueMustNotBeNullAccessor =
value => $"Hurts when '{ value }' is provided.";
}));
var argumentBinder = new DefaultControllerActionArgumentBinder(
metadataProvider,
ModelBindingTestHelper.GetObjectValidator());
var parameter = new ParameterDescriptor
{
Name = "Parameter1",
BindingInfo = new BindingInfo(),
ParameterType = parameterType
};
var operationContext = ModelBindingTestHelper.GetOperationBindingContext(request =>
{
request.QueryString = QueryString.Create("Parameter1", string.Empty);
});
var modelState = new ModelStateDictionary();
// Act
var modelBindingResult = await argumentBinder.BindModelAsync(parameter, modelState, operationContext);
// Assert
// ModelBindingResult
Assert.False(modelBindingResult.IsModelSet);
// Model
Assert.Null(modelBindingResult.Model);
// ModelState
Assert.False(modelState.IsValid);
var key = Assert.Single(modelState.Keys);
Assert.Equal("Parameter1", key);
Assert.Equal(string.Empty, modelState[key].AttemptedValue);
Assert.Equal(string.Empty, modelState[key].RawValue);
var error = Assert.Single(modelState[key].Errors);
Assert.Equal("Hurts when '' is provided.", error.ErrorMessage, StringComparer.Ordinal);
Assert.Null(error.Exception);
}
private bool TryValidateModel(
object model,
string prefix,
OperationBindingContext operationContext)
{
var controller = new TestController();
controller.ControllerContext = new ControllerContext(operationContext.ActionContext);
controller.ObjectValidator = ModelBindingTestHelper.GetObjectValidator(operationContext.MetadataProvider);
controller.MetadataProvider = operationContext.MetadataProvider;
controller.ControllerContext.ValidatorProviders = new[] { operationContext.ValidatorProvider }.ToList();
return(controller.TryValidateModel(model, prefix));
}
public async Task KeyValuePairModelBinder_SimpleTypes_WithNoValue_AndCustomizedMessage_AddsGivenMessage()
{
// Arrange
var metadataProvider = new TestModelMetadataProvider();
metadataProvider
.ForType(typeof(KeyValuePair <string, int>))
.BindingDetails((System.Action <ModelBinding.Metadata.BindingMetadata>)(binding =>
{
// A real details provider could customize message based on BindingMetadataProviderContext.
binding.ModelBindingMessageProvider.MissingKeyOrValueAccessor = () => $"Hurts when nothing is provided.";
}));
var argumentBinder = new DefaultControllerActionArgumentBinder(
metadataProvider,
ModelBindingTestHelper.GetObjectValidator());
var parameter = new ParameterDescriptor
{
Name = "parameter",
ParameterType = typeof(KeyValuePair <string, int>)
};
var operationContext = ModelBindingTestHelper.GetOperationBindingContext(request =>
{
request.QueryString = new QueryString("?parameter.Key=10");
});
var modelState = new ModelStateDictionary();
// Act
var modelBindingResult = await argumentBinder.BindModelAsync(parameter, modelState, operationContext);
// Assert
Assert.False(modelBindingResult.IsModelSet);
Assert.Equal(2, modelState.Count);
Assert.False(modelState.IsValid);
Assert.Equal(1, modelState.ErrorCount);
var entry = Assert.Single(modelState, kvp => kvp.Key == "parameter.Key").Value;
Assert.Empty(entry.Errors);
Assert.Equal("10", entry.AttemptedValue);
Assert.Equal("10", entry.RawValue);
entry = Assert.Single(modelState, kvp => kvp.Key == "parameter.Value").Value;
var error = Assert.Single(entry.Errors);
Assert.Null(error.Exception);
Assert.Equal("Hurts when nothing is provided.", error.ErrorMessage);
}
private Task <bool> TryUpdateModel(
object model,
string prefix,
OperationBindingContext operationContext)
{
return(ModelBindingHelper.TryUpdateModelAsync(
model,
model.GetType(),
prefix,
operationContext.ActionContext,
operationContext.MetadataProvider,
operationContext.ModelBinder,
operationContext.ValueProvider,
operationContext.InputFormatters,
ModelBindingTestHelper.GetObjectValidator(operationContext.MetadataProvider),
operationContext.ValidatorProvider));
}