private static (DefaultModelBindingContext, IModelBinder) GetBinderAndContext(
Type modelType,
bool suppressBindingUndefinedValueToEnumType,
object valueProviderValue)
{
var binderProviderContext = new TestModelBinderProviderContext(modelType);
var modelName = "theModelName";
var bindingContext = new DefaultModelBindingContext
{
ModelMetadata = binderProviderContext.Metadata,
ModelName = modelName,
ModelState = new ModelStateDictionary(),
ValueProvider = new SimpleValueProvider()
{
{ modelName, valueProviderValue }
}
};
var binderProvider = new EnumTypeModelBinderProvider(new MvcOptions
{
SuppressBindingUndefinedValueToEnumType = suppressBindingUndefinedValueToEnumType
});
var binder = binderProvider.GetBinder(binderProviderContext);
return(bindingContext, binder);
}
public void ReturnsBinder_ForFlagsEnumType(Type modelType)
{
// Arrange
var provider = new EnumTypeModelBinderProvider(allowBindingUndefinedValueToEnumType: true);
var context = new TestModelBinderProviderContext(modelType);
// Act
var result = provider.GetBinder(context);
// Assert
Assert.IsType <EnumTypeModelBinder>(result);
}
public void DoesNotReturnBinder_ForNonEnumTypes(Type modelType)
{
// Arrange
var provider = new EnumTypeModelBinderProvider(new MvcOptions());
var context = new TestModelBinderProviderContext(modelType);
// Act
var result = provider.GetBinder(context);
// Assert
Assert.Null(result);
}
public void ReturnsBinder_ForFlagsEnumType(Type modelType)
{
// Arrange
var provider = new EnumTypeModelBinderProvider(new MvcOptions());
var context = new TestModelBinderProviderContext(modelType);
// Act
var result = provider.GetBinder(context);
// Assert
Assert.IsType <EnumTypeModelBinder>(result);
}
public async Task BindModel_AllowsBindingUndefinedValues_ToEnumTypes(
Type modelType,
string suppliedValue,
long expected)
{
// Arrange
var binderProviderContext = new TestModelBinderProviderContext(modelType);
var binderInfo = GetBinderAndContext(
modelType,
suppressBindingUndefinedValueToEnumType: false,
valueProviderValue: new object[] { suppliedValue });
var bindingContext = binderInfo.Item1;
var binder = binderInfo.Item2;
// Act
await binder.BindModelAsync(bindingContext);
// Assert
Assert.True(bindingContext.Result.IsModelSet);
Assert.IsType(GetUnderlyingType(modelType), bindingContext.Result.Model);
Assert.Equal(expected, Convert.ToInt64(bindingContext.Result.Model));
}