public static async Task <ModelBindingResult> BindModelAsync(
this ParameterBinder parameterBinder,
ParameterDescriptor parameter,
ControllerContext context,
IModelMetadataProvider modelMetadataProvider,
ModelMetadata modelMetadata)
{
var valueProvider = await CompositeValueProvider.CreateAsync(context);
var modelBinderFactory = ModelBindingTestHelper.GetModelBinderFactory(modelMetadataProvider);
var modelBinder = modelBinderFactory.CreateBinder(new ModelBinderFactoryContext
{
BindingInfo = parameter.BindingInfo,
Metadata = modelMetadata,
CacheToken = parameter,
});
return(await parameterBinder.BindModelAsync(
context,
modelBinder,
valueProvider,
parameter,
modelMetadata,
value : null));
}
public async Task BindModelAsync_WithBindPageProperty_EnforcesBindRequired(int?input, bool isValid)
{
// Arrange
var propertyInfo = typeof(TestPage).GetProperty(nameof(TestPage.BindRequiredProperty));
var propertyDescriptor = new PageBoundPropertyDescriptor
{
BindingInfo = BindingInfo.GetBindingInfo(new[]
{
new FromQueryAttribute {
Name = propertyInfo.Name
},
}),
Name = propertyInfo.Name,
ParameterType = propertyInfo.PropertyType,
Property = propertyInfo,
};
var typeInfo = typeof(TestPage).GetTypeInfo();
var actionDescriptor = new CompiledPageActionDescriptor
{
BoundProperties = new[] { propertyDescriptor },
HandlerTypeInfo = typeInfo,
ModelTypeInfo = typeInfo,
PageTypeInfo = typeInfo,
};
var testContext = ModelBindingTestHelper.GetTestContext(request =>
{
request.Method = "POST";
if (input.HasValue)
{
request.QueryString = new QueryString($"?{propertyDescriptor.Name}={input.Value}");
}
});
var modelMetadataProvider = TestModelMetadataProvider.CreateDefaultProvider();
var parameterBinder = ModelBindingTestHelper.GetParameterBinder(modelMetadataProvider);
var modelBinderFactory = ModelBindingTestHelper.GetModelBinderFactory(modelMetadataProvider);
var modelMetadata = modelMetadataProvider
.GetMetadataForProperty(typeof(TestPage), propertyDescriptor.Name);
var pageBinder = PageBinderFactory.CreatePropertyBinder(
parameterBinder,
modelMetadataProvider,
modelBinderFactory,
actionDescriptor);
var pageContext = new PageContext
{
ActionDescriptor = actionDescriptor,
HttpContext = testContext.HttpContext,
RouteData = testContext.RouteData,
ValueProviderFactories = testContext.ValueProviderFactories,
};
var page = new TestPage();
// Act
await pageBinder(pageContext, page);
// Assert
Assert.Equal(isValid, pageContext.ModelState.IsValid);
if (isValid)
{
Assert.Equal(input.Value, page.BindRequiredProperty);
}
}